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5.067 Crystal Structure Refinement (MIT) 5.067 Crystal Structure Refinement (MIT)
Description
This course in crystal structure refinement examines the practical aspects of crystal structure determination from data collection strategies to data reduction and basic and advanced refinement problems of organic and inorganic molecules. This course in crystal structure refinement examines the practical aspects of crystal structure determination from data collection strategies to data reduction and basic and advanced refinement problems of organic and inorganic molecules.Subjects
chemistry | chemistry | crystal structure refinement | crystal structure refinement | practical aspects | practical aspects | crystal structure determination | crystal structure determination | data collection | data collection | strategies | strategies | data reduction | data reduction | refinement problems | refinement problems | organic | organic | inorganic | inorganic | molecules | molecules | SHELXL | SHELXL | hydrogen atoms | hydrogen atoms | disorder | disorder | pseudo symmetry | pseudo symmetry | merohedral twins | merohedral twins | pseudo-merohedral twins | pseudo-merohedral twins | twinning | twinning | non-merohedral twins | non-merohedral twins | PLATON | PLATONLicense
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.htmSite sourced from
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See all metadata5.841 Crystal Structure Refinement (MIT) 5.841 Crystal Structure Refinement (MIT)
Description
This course in crystal structure refinement examines the practical aspects of crystal structure determination from data collection strategies to data reduction and basic and advanced refinement problems of organic and inorganic molecules. This course in crystal structure refinement examines the practical aspects of crystal structure determination from data collection strategies to data reduction and basic and advanced refinement problems of organic and inorganic molecules.Subjects
chemistry | chemistry | crystal structure refinement | crystal structure refinement | practical aspects | practical aspects | crystal structure determination | crystal structure determination | data collection | data collection | strategies | strategies | data reduction | data reduction | refinement problems | refinement problems | organic | organic | inorganic | inorganic | molecules | molecules | SHELXL | SHELXL | hydrogen atoms | hydrogen atoms | disorder | disorder | pseudo symmetry | pseudo symmetry | merohedral twins | merohedral twins | pseudo-merohedral twins | pseudo-merohedral twins | twinning | twinning | non-merohedral twins | non-merohedral twins | PLATON | PLATONLicense
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.htmSite sourced from
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See all metadata5.067 Crystal Structure Refinement (MIT) 5.067 Crystal Structure Refinement (MIT)
Description
This course in crystal structure refinement examines the practical aspects of crystal structure determination from data collection strategies to data reduction and basic and advanced refinement problems of organic and inorganic molecules. This course in crystal structure refinement examines the practical aspects of crystal structure determination from data collection strategies to data reduction and basic and advanced refinement problems of organic and inorganic molecules.Subjects
chemistry | chemistry | crystal structure refinement | crystal structure refinement | practical aspects | practical aspects | crystal structure determination | crystal structure determination | data collection | data collection | strategies | strategies | data reduction | data reduction | refinement problems | refinement problems | organic | organic | inorganic | inorganic | molecules | molecules | SHELXL | SHELXL | hydrogen atoms | hydrogen atoms | disorder | disorder | pseudo symmetry | pseudo symmetry | merohedral twins | merohedral twins | pseudo-merohedral twins | pseudo-merohedral twins | twinning | twinning | non-merohedral twins | non-merohedral twins | PLATON | PLATONLicense
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.htmSite sourced from
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See all metadata5.067 Crystal Structure Refinement (MIT)
Description
This course in crystal structure refinement examines the practical aspects of crystal structure determination from data collection strategies to data reduction and basic and advanced refinement problems of organic and inorganic molecules.Subjects
chemistry | crystal structure refinement | practical aspects | crystal structure determination | data collection | strategies | data reduction | refinement problems | organic | inorganic | molecules | SHELXL | hydrogen atoms | disorder | pseudo symmetry | merohedral twins | pseudo-merohedral twins | twinning | non-merohedral twins | PLATONLicense
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 https://ocw.mit.edu/terms/index.htmSite sourced from
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See all metadataCu 70, Zn 30 (wt%), partial recrystallisation - annealing twins
Description
This sample was annealed and 50% cold rolled, with subsequent annealing for 30 minutes at 600 °C. This has caused partial recrystallisation to occur creating new dislocation-free grains with some annealing twins. The temperature is too low for significant grain growth preventing complete recrystallisation.Subjects
alloy | annealing | brass | copper | metal | partial recrystallisation | recrystallisation | twinning | zinc | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoerLicense
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See all metadataCu 70, Zn 30 (wt%), partial recrystallisation - annealing twins
Description
This sample was annealed and 50% cold rolled, with subsequent annealing for 30 minutes at 600 °C. This has caused partial recrystallisation to occur creating new dislocation-free grains with some annealing twins. The temperature is too low for significant grain growth preventing complete recrystallisation.Subjects
alloy | annealing | brass | copper | metal | partial recrystallisation | recrystallisation | twinning | zinc | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoerLicense
http://creativecommons.org/licenses/by-nc-sa/2.0/uk/Site sourced from
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See all metadataCu 70, Zn 30 (wt%), partial recrystallisation - annealing twins
Description
This sample was annealed and 50% cold rolled, with subsequent annealing for 30 minutes at 800 °C. The high annealing temperature raises the rate of growth of the recrystallised grains giving a single a phase containing annealing twins.Subjects
alloy | annealing | brass | copper | metal | recrystallisation | twinning | zinc | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoerLicense
http://creativecommons.org/licenses/by-nc-sa/2.0/uk/Site sourced from
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See all metadataCu 70, Zn 30 (wt%), partial recrystallisation - annealing twins
Description
This sample was annealed and 50% cold rolled, with subsequent annealing for 30 minutes at 800 °C. The high annealing temperature raises the rate of growth of the recrystallised grains giving a single a phase containing annealing twins.Subjects
alloy | annealing | brass | copper | metal | recrystallisation | twinning | zinc | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoerLicense
http://creativecommons.org/licenses/by-nc-sa/2.0/uk/Site sourced from
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See all metadataCu 70, Zn 30 (wt%), slow cooling - annealing twins
Description
This sample was cooled slowly and contains equiaxed ? grains that form in order to minimise their surface energy. Within these grains there is evidence of twinning. Annealing twins have formed during recrystallisation.Subjects
alloy | annealing | brass | copper | metal | recrystallisation | twinning | zinc | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoerLicense
http://creativecommons.org/licenses/by-nc-sa/2.0/uk/Site sourced from
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See all metadataCu 98, Be 2 (wt%), slow cooling - annealing twins
Description
This sample was solution treated and cooled slowly. It contains equiaxed ? grains that form in order to minimise their surface energy. Within these grains there is evidence of twinning. Annealing twins have formed during recrystallisation.Subjects
alloy | annealing | beryllium | copper | metal | recrystallisation | solution heat treatment | twinning | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoerLicense
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See all metadataCu 98, Be 2 (wt%), quenched and aged - annealing twins
Description
This sample was solution treated, quenched and aged. Recrystallisation occurs during ageing creating annealing twins.Subjects
alloy | annealing | beryllium | copper | metal | quenching | solution heat treatment | twinning | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoerLicense
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See all metadataCu 98, Be 2 (wt%), quenched and aged - annealing twins
Description
This sample was solution treated, quenched and aged. Recrystallisation occurs during ageing creating annealing twins.Subjects
alloy | annealing | beryllium | copper | metal | quenching | solution heat treatment | twinning | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoerLicense
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See all metadataZn, cold rolled - mechanical twins
Description
This sample was cold rolled. Zinc has a hexagonal structure so it contains only two independent slip systems. However, for slip to occur, five slip systems are required so zinc does not undergo general plasticity. Instead it forms mechanical twins as an alternative to dislocation motion to accommodate the deformation.Subjects
alloy | mechanical twins | metal | twinning | zinc | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoerLicense
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See all metadataZn, cold rolled - mechanical twins
Description
This sample was cold rolled. Zinc has a hexagonal structure so it contains only two independent slip systems. However, for slip to occur, five slip systems are required so zinc does not undergo general plasticity. Instead it forms mechanical twins as an alternative to dislocation motion to accommodate the deformation.Subjects
alloy | mechanical twins | metal | twinning | zinc | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoerLicense
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See all metadataFe, C 0.2 (wt%), explosively deformed - mechanical twins
Description
This sample was explosively deformed so that there was insufficient time for dislocation motion to occur. Hence, mechanical twins are produced despite the b.c.c. structure of mild steel.Subjects
alloy | carbon | iron | mechanical twins | metal | steel | twinning | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoerLicense
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See all metadataFe, C 0.2 (wt%), explosively deformed - mechanical twins
Description
This sample was explosively deformed so that there was insufficient time for dislocation motion to occur. Hence, mechanical twins are produced despite the b.c.c. structure of mild steel.Subjects
alloy | carbon | iron | mechanical twins | metal | steel | twinning | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoerLicense
http://creativecommons.org/licenses/by-nc-sa/2.0/uk/Site sourced from
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See all metadataCu 70, Zn 30 (wt%), partial recrystallisation - annealing twins
Description
This sample was annealed and 50% cold rolled, with subsequent annealing for 30 minutes at 600 °C. This has caused partial recrystallisation to occur creating new dislocation-free grains with some annealing twins. The temperature is too low for significant grain growth preventing complete recrystallisation.Subjects
alloy | annealing | brass | copper | metal | partial recrystallisation | recrystallisation | twinning | zinc | doitpoms | university of cambridge | micrograph | corematerials | ukoer | Engineering | H000License
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
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See all metadataCu 70, Zn 30 (wt%), partial recrystallisation - annealing twins
Description
This sample was annealed and 50% cold rolled, with subsequent annealing for 30 minutes at 600 °C. This has caused partial recrystallisation to occur creating new dislocation-free grains with some annealing twins. The temperature is too low for significant grain growth preventing complete recrystallisation.Subjects
alloy | annealing | brass | copper | metal | partial recrystallisation | recrystallisation | twinning | zinc | doitpoms | university of cambridge | micrograph | corematerials | ukoer | Engineering | H000License
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_dcAttribution
Click to get HTML | Click to get attribution | Click to get URLAll metadata
See all metadataCu 70, Zn 30 (wt%), partial recrystallisation - annealing twins
Description
This sample was annealed and 50% cold rolled, with subsequent annealing for 30 minutes at 800 °C. The high annealing temperature raises the rate of growth of the recrystallised grains giving a single a phase containing annealing twins.Subjects
alloy | annealing | brass | copper | metal | recrystallisation | twinning | zinc | doitpoms | university of cambridge | micrograph | corematerials | ukoer | Engineering | H000License
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
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See all metadataCu 70, Zn 30 (wt%), partial recrystallisation - annealing twins
Description
This sample was annealed and 50% cold rolled, with subsequent annealing for 30 minutes at 800 °C. The high annealing temperature raises the rate of growth of the recrystallised grains giving a single a phase containing annealing twins.Subjects
alloy | annealing | brass | copper | metal | recrystallisation | twinning | zinc | doitpoms | university of cambridge | micrograph | corematerials | ukoer | Engineering | H000License
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
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Click to get HTML | Click to get attribution | Click to get URLAll metadata
See all metadataCu 70, Zn 30 (wt%), slow cooling - annealing twins
Description
This sample was cooled slowly and contains equiaxed α grains that form in order to minimise their surface energy. Within these grains there is evidence of twinning. Annealing twins have formed during recrystallisation.Subjects
alloy | annealing | brass | copper | metal | recrystallisation | twinning | zinc | doitpoms | university of cambridge | micrograph | corematerials | ukoer | Engineering | H000License
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
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Click to get HTML | Click to get attribution | Click to get URLAll metadata
See all metadataCu 98, Be 2 (wt%), slow cooling - annealing twins
Description
This sample was solution treated and cooled slowly. It contains equiaxed α grains that form in order to minimise their surface energy. Within these grains there is evidence of twinning. Annealing twins have formed during recrystallisation.Subjects
alloy | annealing | beryllium | copper | metal | recrystallisation | solution heat treatment | twinning | doitpoms | university of cambridge | micrograph | corematerials | ukoer | Engineering | H000License
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
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See all metadataCu 98, Be 2 (wt%), quenched and aged - annealing twins
Description
This sample was solution treated, quenched and aged. Recrystallisation occurs during ageing creating annealing twins.Subjects
alloy | annealing | beryllium | copper | metal | quenching | solution heat treatment | twinning | doitpoms | university of cambridge | micrograph | corematerials | ukoer | Engineering | H000License
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
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See all metadataCu 98, Be 2 (wt%), quenched and aged - annealing twins
Description
This sample was solution treated, quenched and aged. Recrystallisation occurs during ageing creating annealing twins.Subjects
alloy | annealing | beryllium | copper | metal | quenching | solution heat treatment | twinning | doitpoms | university of cambridge | micrograph | corematerials | ukoer | Engineering | H000License
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
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Click to get HTML | Click to get attribution | Click to get URLAll metadata
See all metadataZn, cold rolled - mechanical twins
Description
This sample was cold rolled. Zinc has a hexagonal structure so it contains only two independent slip systems. However, for slip to occur, five slip systems are required so zinc does not undergo general plasticity. Instead it forms mechanical twins as an alternative to dislocation motion to accommodate the deformation.Subjects
alloy | mechanical twins | metal | twinning | zinc | doitpoms | university of cambridge | micrograph | corematerials | ukoer | Engineering | H000License
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
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See all metadata