Searching for nickel : 72 results found | RSS Feed for this search

1 2 3

5.36 Biochemistry Laboratory (MIT) 5.36 Biochemistry Laboratory (MIT)

Description

The course, which spans two thirds of a semester, provides students with a research-inspired laboratory experience that introduces standard biochemical techniques in the context of investigating a current and exciting research topic, acquired resistance to the cancer drug Gleevec. Techniques include protein expression, purification, and gel analysis, PCR, site-directed mutagenesis, kinase activity assays, and protein structure viewing. This class is part of the new laboratory curriculum in the MIT Department of Chemistry. Undergraduate Research-Inspired Experimental Chemistry Alternatives (URIECA) introduces students to cutting edge research topics in a modular format. Acknowledgments Development of this course was funded through an HHMI Professors grant to Professor Catherine L. Drennan. The course, which spans two thirds of a semester, provides students with a research-inspired laboratory experience that introduces standard biochemical techniques in the context of investigating a current and exciting research topic, acquired resistance to the cancer drug Gleevec. Techniques include protein expression, purification, and gel analysis, PCR, site-directed mutagenesis, kinase activity assays, and protein structure viewing. This class is part of the new laboratory curriculum in the MIT Department of Chemistry. Undergraduate Research-Inspired Experimental Chemistry Alternatives (URIECA) introduces students to cutting edge research topics in a modular format. Acknowledgments Development of this course was funded through an HHMI Professors grant to Professor Catherine L. Drennan.

Subjects

URIECA | URIECA | laboratory | laboratory | kinase | kinase | cancer cells | cancer cells | laboratory techniques | laboratory techniques | DNA | DNA | cultures | cultures | UV-Vis | UV-Vis | agarose gel | agarose gel | Abl-gleevec | Abl-gleevec | affinity tags | affinity tags | lyse | lyse | digest | digest | mutants | mutants | resistance | resistance | gel electrophoresis | gel electrophoresis | recombinant | recombinant | nickel affinity | nickel affinity | inhibitors | inhibitors | biochemistry | biochemistry | kinetics | kinetics | enzyme | enzyme | inhibition | inhibition | purification | purification | expression | expression

License

Content within individual OCW courses is (c) by the individual authors unless otherwise noted. MIT OpenCourseWare materials are licensed by the Massachusetts Institute of Technology under a Creative Commons License (Attribution-NonCommercial-ShareAlike). For further information see http://ocw.mit.edu/terms/index.htm

Site sourced from

http://ocw.mit.edu/rss/all/mit-allcourses-5.xml

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

C

Description

IN718 is a nickel-based superalloy composed of approximately 53 wt% Ni, 19 wt% Fe, 18 wt% Cr, 5 wt% Nb, and small amounts of Ti, Mo, Co, and Al. The alloy has a number of distinct phases present in its microstructure. These are namely the matrix, ?, and the precipitates, ?', ?'', and ?. The primary strengthening phase is ?'' [1], the composition of which is Ni3Nb. It has a body-centred tetragonal structure, and forms semi-coherently as disc-shaped platelets within the ? matrix, having three variants lying on the {100} planes. It is stable for over 10,000 hours at 600C; however, above this temperature it decomposes to form ?', Ni3Al (between 650C and 850C), and ?, the same composition as ?'' (between 750C and 1000C). It has been commented that, at large volum

Subjects

alloy | metal | nickel | nickel-based superalloy | niobium | precipitation | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoer

License

http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://core.materials.ac.uk/rss/doitpoms_images.xml

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

C

Description

IN718 is a nickel-based superalloy composed of approximately 53 wt% Ni, 19 wt% Fe, 18 wt% Cr, 5 wt% Nb, and small amounts of Ti, Mo, Co, and Al. The alloy has a number of distinct phases present in its microstructure. These are namely the matrix, ?, and the precipitates, ?', ?'', and ?. The primary strengthening phase is ?'' [1], the composition of which is Ni3Nb. It has a body-centred tetragonal structure, and forms semi-coherently as disc-shaped platelets within the ? matrix, having three variants lying on the {100} planes. It is stable for over 10,000 hours at 600C; however, above this temperature it decomposes to form ?', Ni3Al (between 650C and 850C), and ?, the same composition as ?'' (between 750C and 1000C). It has been commented that, at large volum

Subjects

alloy | metal | nickel | nickel-based superalloy | niobium | precipitation | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoer

License

http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://core.materials.ac.uk/rss/doitpoms_images.xml

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

C

Description

IN718 is a nickel-based superalloy composed of approximately 53 wt% Ni, 19 wt% Fe, 18 wt% Cr, 5 wt% Nb, and small amounts of Ti, Mo, Co, and Al. The alloy has a number of distinct phases present in its microstructure. These are namely the matrix, ?, and the precipitates, ?', ?'', and ?. The primary strengthening phase is ?'' [1], the composition of which is Ni3Nb. It has a body-centred tetragonal structure, and forms semi-coherently as disc-shaped platelets within the ? matrix, having three variants lying on the {100} planes. It is stable for over 10,000 hours at 600C; however, above this temperature it decomposes to form ?', Ni3Al (between 650C and 850C), and ?, the same composition as ?'' (between 750C and 1000C). It has been commented that, at large volum

Subjects

alloy | metal | nickel | nickel-based superalloy | niobium | precipitation | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoer

License

http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://core.materials.ac.uk/rss/doitpoms_images.xml

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

C

Description

IN718 is a nickel-based superalloy composed of approximately 53 wt% Ni, 19 wt% Fe, 18 wt% Cr, 5 wt% Nb, and small amounts of Ti, Mo, Co, and Al. The alloy has a number of distinct phases present in its microstructure. These are namely the matrix, ?, and the precipitates, ?', ?'', and ?. The primary strengthening phase is ?'' [1], the composition of which is Ni3Nb. It has a body-centred tetragonal structure, and forms semi-coherently as disc-shaped platelets within the ? matrix, having three variants lying on the {100} planes. It is stable for over 10,000 hours at 600C; however, above this temperature it decomposes to form ?', Ni3Al (between 650C and 850C), and ?, the same composition as ?'' (between 750C and 1000C). It has been commented that, at large volum

Subjects

alloy | metal | nickel | nickel-based superalloy | niobium | precipitation | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoer

License

http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://core.materials.ac.uk/rss/doitpoms_images.xml

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

C

Description

IN718 is a nickel-based superalloy composed of approximately 53 wt% Ni, 19 wt% Fe, 18 wt% Cr, 5 wt% Nb, and small amounts of Ti, Mo, Co, and Al. The alloy has a number of distinct phases present in its microstructure. These are namely the matrix, ?, and the precipitates, ?', ?'', and ?. The primary strengthening phase is ?'' [1], the composition of which is Ni3Nb. It has a body-centred tetragonal structure, and forms semi-coherently as disc-shaped platelets within the ? matrix, having three variants lying on the {100} planes. It is stable for over 10,000 hours at 600C; however, above this temperature it decomposes to form ?', Ni3Al (between 650C and 850C), and ?, the same composition as ?'' (between 750C and 1000C). It has been commented that, at large volum

Subjects

alloy | metal | nickel | nickel-based superalloy | niobium | precipitation | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoer

License

http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://core.materials.ac.uk/rss/doitpoms_images.xml

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

C

Description

IN718 is a nickel-based superalloy composed of approximately 53 wt% Ni, 19 wt% Fe, 18 wt% Cr, 5 wt% Nb, and small amounts of Ti, Mo, Co, and Al. The alloy has a number of distinct phases present in its microstructure. These are namely the matrix, ?, and the precipitates, ?', ?'', and ?. The primary strengthening phase is ?'' [1], the composition of which is Ni3Nb. It has a body-centred tetragonal structure, and forms semi-coherently as disc-shaped platelets within the ? matrix, having three variants lying on the {100} planes. It is stable for over 10,000 hours at 600C; however, above this temperature it decomposes to form ?', Ni3Al (between 650C and 850C), and ?, the same composition as ?'' (between 750C and 1000C). It has been commented that, at large volum

Subjects

alloy | metal | nickel | nickel-based superalloy | niobium | precipitation | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoer

License

http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://core.materials.ac.uk/rss/doitpoms_images.xml

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

C

Description

IN718 is a nickel-based superalloy composed of approximately 53 wt% Ni, 19 wt% Fe, 18 wt% Cr, 5 wt% Nb, and small amounts of Ti, Mo, Co, and Al. The alloy has a number of distinct phases present in its microstructure. These are namely the matrix, ?, and the precipitates, ?', ?'', and ?. The primary strengthening phase is ?'' [1], the composition of which is Ni3Nb. It has a body-centred tetragonal structure, and forms semi-coherently as disc-shaped platelets within the ? matrix, having three variants lying on the {100} planes. It is stable for over 10,000 hours at 600C; however, above this temperature it decomposes to form ?', Ni3Al (between 650C and 850C), and ?, the same composition as ?'' (between 750C and 1000C). It has been commented that, at large volum

Subjects

alloy | metal | nickel | nickel-based superalloy | niobium | precipitation | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoer

License

http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://core.materials.ac.uk/rss/doitpoms_images.xml

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

C

Description

IN718 is a nickel-based superalloy composed of approximately 53 wt% Ni, 19 wt% Fe, 18 wt% Cr, 5 wt% Nb, and small amounts of Ti, Mo, Co, and Al. The alloy has a number of distinct phases present in its microstructure. These are namely the matrix, ?, and the precipitates, ?', ?'', and ?. The primary strengthening phase is ?'' [1], the composition of which is Ni3Nb. It has a body-centred tetragonal structure, and forms semi-coherently as disc-shaped platelets within the ? matrix, having three variants lying on the {100} planes. It is stable for over 10,000 hours at 600C; however, above this temperature it decomposes to form ?', Ni3Al (between 650C and 850C), and ?, the same composition as ?'' (between 750C and 1000C). It has been commented that, at large volum

Subjects

alloy | metal | nickel | nickel-based superalloy | niobium | precipitation | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoer

License

http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://core.materials.ac.uk/rss/doitpoms_images.xml

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

17.462 Innovation in Military Organizations (MIT) 17.462 Innovation in Military Organizations (MIT)

Description

This seminar has three purposes. One, it inquires into the causes of military innovation by examining a number of the most outstanding historical cases. Two, it views military innovations through the lens of organization theory to develop generalizations about the innovation process within militaries. Three, it uses the empirical study of military innovations as a way to examine the strength and credibility of hypotheses that organization theorists have generated about innovation in non-military organizations. This seminar has three purposes. One, it inquires into the causes of military innovation by examining a number of the most outstanding historical cases. Two, it views military innovations through the lens of organization theory to develop generalizations about the innovation process within militaries. Three, it uses the empirical study of military innovations as a way to examine the strength and credibility of hypotheses that organization theorists have generated about innovation in non-military organizations.

Subjects

URIECA | URIECA | laboratory | laboratory | kinase | kinase | cancer cells | cancer cells | laboratory techniques | laboratory techniques | DNA | DNA | cultures | cultures | UV-Vis | UV-Vis | agarose gel | agarose gel | Abl-gleevec | Abl-gleevec | affinity tags | affinity tags | lyse | lyse | digest | digest | mutants | mutants | resistance | resistance | gel electrophoresis | gel electrophoresis | recombinant | recombinant | nickel affinity | nickel affinity | inhibitors | inhibitors | biochemistry | biochemistry | kinetics | kinetics | enzyme | enzyme | inhibition | inhibition | purification | purification | expression | expression | Political science | Political science | security studies | security studies | innovation | innovation | military organizations | military organizations | war | war | history | history | organization theory | organization theory | empirical study | empirical study | land warfare | land warfare | battleships | battleships | airpower | airpower | submarines | submarines | cruise | cruise | ballistic | ballistic | missiles | missiles | armor | armor | military affairs | military affairs | strategic | strategic | tactical | tactical | counterinsurgency | counterinsurgency | Vietnam | Vietnam | Revolution in Military Affairs | Revolution in Military Affairs | RMA | RMA

License

Content within individual OCW courses is (c) by the individual authors unless otherwise noted. MIT OpenCourseWare materials are licensed by the Massachusetts Institute of Technology under a Creative Commons License (Attribution-NonCommercial-ShareAlike). For further information see http://ocw.mit.edu/terms/index.htm

Site sourced from

http://ocw.mit.edu/rss/all/mit-allcourses-17.xml

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

IN718 nickel-based superalloy held for 1 minute at 850°C

Description

IN718 is a nickel-based superalloy composed of approximately 53 wt% Ni, 19 wt% Fe, 18 wt% Cr, 5 wt% Nb, and small amounts of Ti, Mo, Co, and Al. The alloy has a number of distinct phases present in its microstructure. These are namely the matrix, γ, and the precipitates, γ', γ'', and δ. The primary strengthening phase is γ'' [1], the composition of which is Ni3Nb. It has a body-centred tetragonal structure, and forms semi-coherently as disc-shaped platelets within the γ matrix, having three variants lying on the {100} planes. It is stable for over 10,000 hours at 600°C; however, above this temperature it decomposes to form γ', Ni3Al (between 650°C and 850°C), and δ, the same composition as γ'' (between 750°C and 1000°C). It has been commented that, at large volume fra

Subjects

alloy | metal | nickel | nickel-based superalloy | niobium | precipitation | doitpoms | university of cambridge | micrograph | corematerials | ukoer | Engineering | H000

License

Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales http://creativecommons.org/licenses/by-nc-sa/2.0/uk/ http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://dspace.jorum.ac.uk/oai/request?verb=ListRecords&metadataPrefix=oai_dc

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

IN718 nickel-based superalloy held for 20 minutes at 850°C

Description

IN718 is a nickel-based superalloy composed of approximately 53 wt% Ni, 19 wt% Fe, 18 wt% Cr, 5 wt% Nb, and small amounts of Ti, Mo, Co, and Al. The alloy has a number of distinct phases present in its microstructure. These are namely the matrix, γ, and the precipitates, γ', γ'', and δ. The primary strengthening phase is γ'' [1], the composition of which is Ni3Nb. It has a body-centred tetragonal structure, and forms semi-coherently as disc-shaped platelets within the γ matrix, having three variants lying on the {100} planes. It is stable for over 10,000 hours at 600°C; however, above this temperature it decomposes to form γ', Ni3Al (between 650°C and 850°C), and δ, the same composition as γ'' (between 750°C and 1000°C). It has been commented that, at large volume fra

Subjects

alloy | metal | nickel | nickel-based superalloy | niobium | precipitation | doitpoms | university of cambridge | micrograph | corematerials | ukoer | Engineering | H000

License

Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales http://creativecommons.org/licenses/by-nc-sa/2.0/uk/ http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://dspace.jorum.ac.uk/oai/request?verb=ListRecords&metadataPrefix=oai_dc

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

IN718 nickel-based superalloy held for 1 hour at 850°C

Description

IN718 is a nickel-based superalloy composed of approximately 53 wt% Ni, 19 wt% Fe, 18 wt% Cr, 5 wt% Nb, and small amounts of Ti, Mo, Co, and Al. The alloy has a number of distinct phases present in its microstructure. These are namely the matrix, γ, and the precipitates, γ', γ'', and δ. The primary strengthening phase is γ'' [1], the composition of which is Ni3Nb. It has a body-centred tetragonal structure, and forms semi-coherently as disc-shaped platelets within the γ matrix, having three variants lying on the {100} planes. It is stable for over 10,000 hours at 600°C; however, above this temperature it decomposes to form γ', Ni3Al (between 650°C and 850°C), and δ, the same composition as γ'' (between 750°C and 1000°C). It has been commented that, at large volume fra

Subjects

alloy | metal | nickel | nickel-based superalloy | niobium | precipitation | doitpoms | university of cambridge | micrograph | corematerials | ukoer | Engineering | H000

License

Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales http://creativecommons.org/licenses/by-nc-sa/2.0/uk/ http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://dspace.jorum.ac.uk/oai/request?verb=ListRecords&metadataPrefix=oai_dc

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

IN718 nickel-based superalloy held for 3 hours at 850°C

Description

IN718 is a nickel-based superalloy composed of approximately 53 wt% Ni, 19 wt% Fe, 18 wt% Cr, 5 wt% Nb, and small amounts of Ti, Mo, Co, and Al. The alloy has a number of distinct phases present in its microstructure. These are namely the matrix, γ, and the precipitates, γ', γ'', and δ. The primary strengthening phase is γ'' [1], the composition of which is Ni3Nb. It has a body-centred tetragonal structure, and forms semi-coherently as disc-shaped platelets within the γ matrix, having three variants lying on the {100} planes. It is stable for over 10,000 hours at 600°C; however, above this temperature it decomposes to form γ', Ni3Al (between 650°C and 850°C), and δ, the same composition as γ'' (between 750°C and 1000°C). It has been commented that, at large volume fra

Subjects

alloy | metal | nickel | nickel-based superalloy | niobium | precipitation | doitpoms | university of cambridge | micrograph | corematerials | ukoer | Engineering | H000

License

Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales http://creativecommons.org/licenses/by-nc-sa/2.0/uk/ http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://dspace.jorum.ac.uk/oai/request?verb=ListRecords&metadataPrefix=oai_dc

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

IN718 nickel-based superalloy held for 6 hours at 850°C

Description

IN718 is a nickel-based superalloy composed of approximately 53 wt% Ni, 19 wt% Fe, 18 wt% Cr, 5 wt% Nb, and small amounts of Ti, Mo, Co, and Al. The alloy has a number of distinct phases present in its microstructure. These are namely the matrix, γ, and the precipitates, γ', γ'', and δ. The primary strengthening phase is γ'' [1], the composition of which is Ni3Nb. It has a body-centred tetragonal structure, and forms semi-coherently as disc-shaped platelets within the γ matrix, having three variants lying on the {100} planes. It is stable for over 10,000 hours at 600°C; however, above this temperature it decomposes to form γ', Ni3Al (between 650°C and 850°C), and δ, the same composition as γ'' (between 750°C and 1000°C). It has been commented that, at large volume fra

Subjects

alloy | metal | nickel | nickel-based superalloy | niobium | precipitation | doitpoms | university of cambridge | micrograph | corematerials | ukoer | Engineering | H000

License

Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales http://creativecommons.org/licenses/by-nc-sa/2.0/uk/ http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://dspace.jorum.ac.uk/oai/request?verb=ListRecords&metadataPrefix=oai_dc

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

IN718 nickel-based superalloy held for 24 hours at 850°C

Description

IN718 is a nickel-based superalloy composed of approximately 53 wt% Ni, 19 wt% Fe, 18 wt% Cr, 5 wt% Nb, and small amounts of Ti, Mo, Co, and Al. The alloy has a number of distinct phases present in its microstructure. These are namely the matrix, γ, and the precipitates, γ', γ'', and δ. The primary strengthening phase is γ'' [1], the composition of which is Ni3Nb. It has a body-centred tetragonal structure, and forms semi-coherently as disc-shaped platelets within the γ matrix, having three variants lying on the {100} planes. It is stable for over 10,000 hours at 600°C; however, above this temperature it decomposes to form γ', Ni3Al (between 650°C and 850°C), and δ, the same composition as γ'' (between 750°C and 1000°C). It has been commented that, at large volume fra

Subjects

alloy | metal | nickel | nickel-based superalloy | niobium | precipitation | doitpoms | university of cambridge | micrograph | corematerials | ukoer | Engineering | H000

License

Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales http://creativecommons.org/licenses/by-nc-sa/2.0/uk/ http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://dspace.jorum.ac.uk/oai/request?verb=ListRecords&metadataPrefix=oai_dc

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

IN718 nickel-based superalloy held for 48 hours at 850°C

Description

IN718 is a nickel-based superalloy composed of approximately 53 wt% Ni, 19 wt% Fe, 18 wt% Cr, 5 wt% Nb, and small amounts of Ti, Mo, Co, and Al. The alloy has a number of distinct phases present in its microstructure. These are namely the matrix, γ, and the precipitates, γ', γ'', and δ. The primary strengthening phase is γ'' [1], the composition of which is Ni3Nb. It has a body-centred tetragonal structure, and forms semi-coherently as disc-shaped platelets within the γ matrix, having three variants lying on the {100} planes. It is stable for over 10,000 hours at 600°C; however, above this temperature it decomposes to form γ', Ni3Al (between 650°C and 850°C), and δ, the same composition as γ'' (between 750°C and 1000°C). It has been commented that, at large volume fra

Subjects

alloy | metal | nickel | nickel-based superalloy | niobium | precipitation | doitpoms | university of cambridge | micrograph | corematerials | ukoer | Engineering | H000

License

Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales http://creativecommons.org/licenses/by-nc-sa/2.0/uk/ http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://dspace.jorum.ac.uk/oai/request?verb=ListRecords&metadataPrefix=oai_dc

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

IN718 nickel-based superalloy held for 72 hours at 850°C

Description

IN718 is a nickel-based superalloy composed of approximately 53 wt% Ni, 19 wt% Fe, 18 wt% Cr, 5 wt% Nb, and small amounts of Ti, Mo, Co, and Al. The alloy has a number of distinct phases present in its microstructure. These are namely the matrix, γ, and the precipitates, γ', γ'', and δ. The primary strengthening phase is γ'' [1], the composition of which is Ni3Nb. It has a body-centred tetragonal structure, and forms semi-coherently as disc-shaped platelets within the γ matrix, having three variants lying on the {100} planes. It is stable for over 10,000 hours at 600°C; however, above this temperature it decomposes to form γ', Ni3Al (between 650°C and 850°C), and δ, the same composition as γ'' (between 750°C and 1000°C). It has been commented that, at large volume fra

Subjects

alloy | metal | nickel | nickel-based superalloy | niobium | precipitation | doitpoms | university of cambridge | micrograph | corematerials | ukoer | Engineering | H000

License

Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales http://creativecommons.org/licenses/by-nc-sa/2.0/uk/ http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://dspace.jorum.ac.uk/oai/request?verb=ListRecords&metadataPrefix=oai_dc

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

Fe, Ni 30, C 0.3 (wt%), quenched - martensite plates

Description

This sample was quenched to -80 C to give a metastable martensitic microstructure. The martensite plates show a lenticular morphology as the material attempts to shear as it transforms but is unable to open up voids at the grain boundaries. The plates form in a similar way to mechanical twins but the shear processes lead to changes in crystal structure as well as crystallographic orientation.

Subjects

alloy | carbon | iron | martensite | metal | metastable | nickel | quenching | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoer

License

http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://core.materials.ac.uk/rss/doitpoms_images.xml

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

Fe, Ni 30, C 0.3 (wt%), quenched - martensite plates

Description

This sample was quenched to -80 C to give a metastable martensitic microstructure. The martensite plates show a lenticular morphology as the material attempts to shear as it transforms but is unable to open up voids at the grain boundaries. The plates form in a similar way to mechanical twins but the shear processes lead to changes in crystal structure as well as crystallographic orientation.

Subjects

alloy | carbon | iron | martensite | metal | metastable | nickel | quenching | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoer

License

http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://core.materials.ac.uk/rss/doitpoms_images.xml

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

Mechanical Behaviour of Materials: Creep Deformation of Metals

Description

This set consists of an animation explaning Nabarro-Herring creep and Coble creep, and the simulation of a creeping coil experiment. From TLP: Creep Deformation of Metals

Subjects

creep | Coble creep | Nabarro-Herring creep | diffusion | dislocations | dislocation creep | stress exponent | activation energy | mechanical properties | turbine blades | nickel superalloys | solder | single crystals | DoITPoMS | University of Cambridge | animation | corematerials | ukoer

License

http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://core.materials.ac.uk/rss/doitpoms_animations.xml

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

Ni-hard iron

Description

This is a Ni-hard iron, one of the first cast irons to be developed. These white irons contain Ni to ensure that the austenite transforms to martensite following heating and chromium to increase the hardness of the eutectic carbide.Ni-hard irons are normally stress relieved at 200-300 C for approximately four hours to relieve the martensitic transformation stresses and to promote the transformation of retained austenite. The structure consists of proeutectic austenite dendrites containing martensitic needles with interdendritic austenite-martensite/carbide eutectic.

Subjects

alloy | cast iron | dendrite | iron | metal | nickel | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoer

License

http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://core.materials.ac.uk/rss/doitpoms_images.xml

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

Ni-hard iron

Description

This is a Ni-hard iron, one of the first cast irons to be developed. These white irons contain Ni to ensure that the austenite transforms to martensite following heating and chromium to increase the hardness of the eutectic carbide.Ni-hard irons are normally stress relieved at 200-300 C for approximately four hours to relieve the martensitic transformation stresses and to promote the transformation of retained austenite. The structure consists of proeutectic austenite dendrites containing martensitic needles with interdendritic austenite-martensite/carbide eutectic.

Subjects

alloy | cast iron | dendrite | iron | metal | nickel | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoer

License

http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://core.materials.ac.uk/rss/doitpoms_images.xml

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

Ni-superalloy, fatigue crack propagation

Description

This sample shows fatigue crack propagation in Udimet 720, a nickel-base superalloy. To improve its high temperature mechanical properties Udimet 720 utilises a strengthening mechanism, known as order hardening. There is a large volume fraction of coherent ?' precipitates in the ? matrix. As a fatigue crack propagates through the superalloy there is a plastic region in front of the crack tip.

Subjects

alloy | fatigue | fracture | metal | nickel | order hardening | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoer

License

http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://core.materials.ac.uk/rss/doitpoms_images.xml

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

Ni-superalloy, fatigue crack propagation

Description

This sample shows fatigue crack propagation in Udimet 720, a nickel-base superalloy. To improve its high temperature mechanical properties Udimet 720 utilises a strengthening mechanism, known as order hardening. There is a large volume fraction of coherent ?' precipitates in the ? matrix. As a fatigue crack propagates through the superalloy there is a plastic region in front of the crack tip.

Subjects

alloy | fatigue | fracture | metal | nickel | order hardening | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoer

License

http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://core.materials.ac.uk/rss/doitpoms_images.xml

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata