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Peter Taylor, coppersmith, arrested for stealing from his employers Peter Taylor, coppersmith, arrested for stealing from his employers

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man | man | face | face | hat | hat | scarf | scarf | foundry | foundry | mouth | mouth | interesting | interesting | serious | serious | head | head | grain | grain | property | property | gateshead | gateshead | moustache | moustache | criminal | criminal | crime | crime | button | button | mugshot | mugshot | motive | motive | stolen | stolen | unusual | unusual | ww1 | ww1 | theft | theft | selling | selling | policestation | policestation | wrinkle | wrinkle | firstworldwar | firstworldwar | defence | defence | attentive | attentive | steal | steal | stealing | stealing | prisoner | prisoner | civilian | civilian | fascinating | fascinating | digitalimage | digitalimage | sunderland | sunderland | monkwearmouth | monkwearmouth | charged | charged | coppersmith | coppersmith | prosecution | prosecution | foreman | foreman | northshields | northshields | transcription | transcription | convicted | convicted | socialhistory | socialhistory | newsreport | newsreport | blackframe | blackframe | courtcase | courtcase | blackandwhitephotograph | blackandwhitephotograph | summoned | summoned | petertaylor | petertaylor | 99churchstreet | 99churchstreet | neutralbackground | neutralbackground | prisonterm | prisonterm | lawsonstreet | lawsonstreet | carolineallen | carolineallen | £11 | £11 | 13may1915 | 13may1915 | 190216 | 190216 | johnhearn | johnhearn | northshieldspolicecourt | northshieldspolicecourt | theshieldsdailynews | theshieldsdailynews | northshieldslocalstudieslibrary | northshieldslocalstudieslibrary | criminalfacesofnorthshieldsfirstworldwar | criminalfacesofnorthshieldsfirstworldwar | microfilmcopies | microfilmcopies | 21may1915 | 21may1915 | 25brassbosses | 25brassbosses | 26whickhamstreet | 26whickhamstreet | copperpipeends | copperpipeends | detmason | detmason | mrlwolff | mrlwolff | mrpmdodds | mrpmdodds | jameshoggandsons | jameshoggandsons | receivingstolengoods | receivingstolengoods | gatesheadstore | gatesheadstore | 28brassflanges | 28brassflanges

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Greeting members of Marsden Colliery Band Greeting members of Marsden Colliery Band

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johngrantham | johngrantham | sheriff | sheriff | walterlee | walterlee | lordmayor | lordmayor | newcastleupontyne | newcastleupontyne | 1920s | 1920s | northeastengland | northeastengland | tyneside | tyneside | marsdencolliery | marsdencolliery | brassband | brassband | centralstation | centralstation | victory | victory | collierybands | collierybands | hats | hats | blackandwhitephotograph | blackandwhitephotograph | digitalimage | digitalimage | socialhistory | socialhistory | archives | archives | servingthecity | servingthecity | unitedkingdom | unitedkingdom | gathering | gathering | unusual | unusual | interesting | interesting | fascinating | fascinating | marsdencollieryband | marsdencollieryband | newcastlecentralstation | newcastlecentralstation | signage | signage | clock | clock | letter | letter | hand | hand | number | number | digit | digit | building | building | ceiling | ceiling | ground | ground | wall | wall | blur | blur | mark | mark | grain | grain | post | post | standing | standing | men | men | woman | woman | nationalbrassbandcontest | nationalbrassbandcontest | crystalpalace | crystalpalace | london | london | 29september1925 | 29september1925 | industry | industry | duty | duty | service | service | cityofnewcastle | cityofnewcastle | blyth | blyth | 1877 | 1877 | uniform | uniform | elegant | elegant | button | button | decoration | decoration | hat | hat | scarf | scarf | tie | tie | shirt | shirt | trousers | trousers | coat | coat | fabric | fabric | crease | crease | shoe | shoe | shine | shine | daylight | daylight | attentive | attentive | distracted | distracted

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Techniques for Studying Materials: Microstructural Examination

Description

This set of animations consists of interactive phase diagrams of Fe-C, grey cast iron, white cast iron, alpha brass and alpha-beta brass. From TLP: Microstructural Examination

Subjects

micrograph | microstructure | metallography | metallographic | phase diagram | phase transformation | eutectic | eutectoid | peritectic | steel | martensite | ferrite | cementite | austenite | pearlite | cast iron | spheroidal cast iron | grey cast iron | white cast iron | brass | alpha brass | alpha beta brass | DoITPoMS | University of Cambridge | animation | corematerials | ukoer

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Techniques for Studying Materials: Microstructural Examination

Description

This set of animations consists of interactive phase diagrams of Fe-C, grey cast iron, white cast iron, alpha brass and alpha-beta brass. From TLP: Microstructural Examination

Subjects

micrograph | microstructure | metallography | metallographic | phase diagram | phase transformation | eutectic | eutectoid | peritectic | steel | martensite | ferrite | cementite | austenite | pearlite | cast iron | spheroidal cast iron | grey cast iron | white cast iron | brass | alpha brass | alpha beta brass | doitpoms | university of cambridge | animation | 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/

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Greeting members of Marsden Colliery Band

Description

The Lord Mayor (Walter Lee) and the Sheriff (John Grantham) greet the members of Marsden Colliery Band on their arrival at Newcastle Central Station, following their victory in the National Brass Band Contest at the Crystal Palace, London, 29 September 1925 (TWAM ref. DF.GRA/1/4). These images belong to a series of albums documenting John Grantham?s service to the City of Newcastle upon Tyne as its Sheriff 1924-1925 and its Lord Mayor 1936-1937. John Grantham was born in Blyth in 1877 and became a cinema proprietor in Newcastle. He was elected to the City Council in 1912 and became an alderman in 1932. The albums give us an interesting insight into the duties of Lord Mayor and Sheriff as well as a fascinating picture of the times. 2016 is the 800th anniversary of the creation of Newcastle's Mayoralty and Burgesses. (Copyright) We're happy for you to share these digital images within the spirit of The Commons. Please cite 'Tyne & Wear Archives & Museums' when reusing. Certain restrictions on high quality reproductions and commercial use of the original physical version apply though; if you're unsure please email archives@twmuseums.org.uk

Subjects

johngrantham | sheriff | walterlee | lordmayor | newcastleupontyne | 1920s | northeastengland | tyneside | marsdencolliery | brassband | centralstation | victory | collierybands | hats | blackandwhitephotograph | digitalimage | socialhistory | archives | servingthecity | unitedkingdom | gathering | unusual | interesting | fascinating | marsdencollieryband | newcastlecentralstation | signage | clock | letter | hand | number | digit | building | ceiling | ground | wall | blur | mark | grain | post | standing | men | woman | nationalbrassbandcontest | crystalpalace | london | 29september1925 | industry | duty | service | cityofnewcastle | blyth | 1877 | uniform | elegant | button | decoration | hat | scarf | tie | shirt | trousers | coat | fabric | crease | shoe | shine | daylight | attentive | distracted

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Col. D.K. Major (LOC) Col. D.K. Major (LOC)

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libraryofcongress | libraryofcongress | brassurmeuse | brassurmeuse | france | france | october | october | 1918 | 1918 | wwi | wwi | 28378 | 28378 | 26thdivision | 26thdivision | yankeedivision | yankeedivision

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Peter Taylor, coppersmith, arrested for stealing from his employers

Description

Name: Peter Taylor Arrested for: not given Arrested at: North Shields Arrested on: 13 May 1915 Tyne and Wear Archives ref: DX1388-1-260-Peter Taylor The Shields Daily News for 21 May 1915 reports: ?STEALING AND RECEIVING. MAN AND WOMAN SENT TO PRISON AT NORTH SHIELDS. At North Shields today, Peter Taylor, a coppersmith, of 26 Whickham Street, Sunderland, was charged with stealing, between February 15th and May 12th, from a foundry in Lawson Street, 28 brass flanges, 25 brass bosses and a quantity of copper pipe ends, valued at 11, the property of James Hogg and Sons and Caroline Allen of 99 Church Street, Monkwearmouth was summoned for feloniously receiving the same, well knowing the same to have been stolen. Mr P.M. Dodds prosecuted and Mr L. Wolff, of Sunderland, defended the female defendant. Mr P.M. Dodds stated that Taylor had been employed by James Hogg and Sons for three months and during the last two months they had been missing brass and copper from the foundry in Lawson Street. Suspicion fell on Taylor and he was kept under observation. Det. Mason said that he had drilled a hole in a partition to watch Taylor and at 12.20pm on the 15th inst. he saw him pick up three brass flanges. He put one in his pocket and two down his trousers. He intercepted defendant and when charged he replied ?I don?t deny stealing it.? Defendant also said he sold the brass and copper to defendant Allen. He did not know how much he had stolen, but Allen said she would buy anything up to an anchor. Witness then went to Sunderland and charged Allen, and she said Taylor had been telling lies, as she did not know they were stolen. She admitted buying flanges etc. from Allen, about four times a week, and she sold them to a Gateshead store. John Hearn, foreman for James Hogg and Sons, went to Gateshead with Det. Mason and identified some flanges and copper. Taylor pleaded guilty and Allen not guilty. Mr Wolff then submitted there was no case against Allen, on the ground that she had not a guilty knowledge. The magistrates committed Taylor to prison for three months and Allen for one month in the second division. The Mayor (Counc. H. Gregg) said that if it was not for the likes of Allen, Taylor would not be in the position he was in.? These images are taken from an album of photographs of prisoners brought before the North Shields Police Court between 1902 and 1916 (TWAM ref. DX1388/1). This set is our selection of the best mugshots taken during the First World War. They have been chosen because of the sharpness and general quality of the images. The album doesn?t record the details of each prisoner?s crimes, just their names and dates of arrest. In order to discover the stories behind the mugshots, staff from Tyne & Wear Archives & Museums visited North Shields Local Studies Library where they carefully searched through microfilm copies of the ?Shields Daily News? looking for newspaper reports of the court cases. The newspaper reports have been transcribed and added below each mugshot. Combining these two separate records gives us a fascinating insight into life on the Home Front during the First World War. These images document the lives of people of different ages and backgrounds, both civilians and soldiers. Our purpose here is not to judge them but simply to reflect the realities of their time. (Copyright) We're happy for you to share this digital image within the spirit of The Commons. Please cite 'Tyne & Wear Archives & Museums' when reusing. Certain restrictions on high quality reproductions and commercial use of the original physical version apply though; if you're unsure please email archives@twmuseums.org.uk.

Subjects

prisoner | crime | criminal | northshields | policestation | mugshot | coppersmith | sunderland | stealing | jameshoggandsons | receivingstolengoods | theft | socialhistory | blackandwhitephotograph | man | grain | neutralbackground | hat | scarf | blackframe | digitalimage | criminalfacesofnorthshieldsfirstworldwar | firstworldwar | ww1 | 13may1915 | petertaylor | theshieldsdailynews | newsreport | courtcase | 21may1915 | fascinating | unusual | interesting | 26whickhamstreet | steal | stolen | charged | convicted | foundry | lawsonstreet | 28brassflanges | 25brassbosses | copperpipeends | 11 | property | carolineallen | 99churchstreet | monkwearmouth | summoned | mrpmdodds | mrlwolff | prosecution | defence | detmason | selling | gatesheadstore | johnhearn | foreman | gateshead | prisonterm | 190216 | northshieldslocalstudieslibrary | transcription | microfilmcopies | civilian | northshieldspolicecourt | motive | moustache | serious | attentive | wrinkle | head | face | mouth | button

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Wallsend Slipway: Photograph of the Brass Foundry Department (Core making)

Description

Taken from a photograph album entitled 'War Activities,' Wallsend Slipway and Engineering Company Limited?s Collection. Date: 1914 - 1918 Reference no. DS.WS/143/3 (pg 35) This photograph was selected by Charles Bell as part of the 'Uncovering Archives Photography' Workshop held at Tyne and Wear Museums and Archives in November 2012. See Charles' response to this image here: www.flickr.com/photos/thistoowillpass/8365535382/in/pool-... Find out more about the project here: www.flickr.com/groups/uncoveringarchivesphotography/ (Copyright) We're happy for you to share this digital image within the spirit of The Commons. Please cite 'Tyne & Wear Archives & Museums' when reusing. Certain restrictions on high quality reproductions and commercial use of the original physical version apply though; if you're unsure please email archives@twmuseums.org.uk

Subjects

workingclass | workers | childlabour | wallsendslipway | blackandwhitephotograph | coremaking | brassfoundrydepartment | engineering | industrialheritage | humanity | society | girls | boys | people | hats | uniforms | children | tie | shoes | trousers | waistcoat | longsleeveshirt | coat | bricks | mortar | shelves | bench | tins | plates | wood | dark | trade | tools | brass | metal | steel | pieces | bolts | joinery | alert | social | statement | dim | industry

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Hetton Colliery Silver Prize Band Hetton Colliery Silver Prize Band

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door | door | portrait | portrait | music | music | abstract | abstract | building | building | men | men | industry | industry | window | window | boys | boys | grass | grass | hat | hat | stone | stone | wall | wall | shirt | shirt | musicians | musicians | sepia | sepia | architecture | architecture | standing | standing | children | children | shoe | shoe | 1974 | 1974 | interesting | interesting | fantastic | fantastic | unitedkingdom | unitedkingdom | drum | drum | timber | timber | board | board | coat | coat | debris | debris | decoration | decoration | stripe | stripe | band | band | tie | tie | ground | ground | rope | rope | moustache | moustache | cap | cap | frame | frame | signage | signage | button | button | archives | archives | letter | letter | trousers | trousers | unusual | unusual | pocket | pocket | striking | striking | seated | seated | crease | crease | attentive | attentive | impressive | impressive | brassband | brassband | distracted | distracted | fascinating | fascinating | digitalimage | digitalimage | sunderland | sunderland | musicalinstruments | musicalinstruments | citycouncil | citycouncil | 1895 | 1895 | early20thcentury | early20thcentury | socialhistory | socialhistory | blackandwhitephotograph | blackandwhitephotograph | northeastofengland | northeastofengland | artanddesign | artanddesign | moorsley | moorsley | eastrainton | eastrainton | hettonlehole | hettonlehole | hettonhall | hettonhall | collieryband | collieryband | easingtonlane | easingtonlane | hettoncolliery | hettoncolliery | hettonurbandistrictcouncil | hettonurbandistrictcouncil | hettonleholeurbandistrict | hettonleholeurbandistrict | sunderlandmetropolitanborough | sunderlandmetropolitanborough | localgovernmentact1894 | localgovernmentact1894 | hettoncollierysilverprizeband | hettoncollierysilverprizeband

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Fianna Éireann Council, 1915? Fianna Éireann Council, 1915?

Description

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newyorkcity | newyorkcity | ireland | ireland | dublin | dublin | usa | usa | uniforms | uniforms | glasnevin | glasnevin | leinster | leinster | codublin | codublin | bmh | bmh | bookkeeper | bookkeeper | brassbuttons | brassbuttons | 1916rising | 1916rising | nationallibraryofireland | nationallibraryofireland | magazinefort | magazinefort | conynghamroad | conynghamroad | seanheuston | seanheuston | thefianna | thefianna | fiannaeireann | fiannaeireann | irishvolunteers | irishvolunteers | pipersband | pipersband | liammellows | liammellows | concolbert | concolbert | brendankeogh | brendankeogh | fiannaéireann | fiannaéireann | michaellonergan | michaellonergan | findlaterplace | findlaterplace | keoghbrothers | keoghbrothers | keoghcollection | keoghcollection | spring1914 | spring1914 | patrickholohan | patrickholohan | garryholohan | garryholohan | padraigryan | padraigryan | lonergan’s | lonergan’s | fiannaeireannhistory | fiannaeireannhistory | houlihanbrothers | houlihanbrothers | padriagoriain | padriagoriain | newfiannauniform | newfiannauniform | clery’sdepartmentstore | clery’sdepartmentstore | garryholohans | garryholohans | jerseysandkilts | jerseysandkilts | pádraigóriain | pádraigóriain | liamo’maoiliosa | liamo’maoiliosa | kennedysofparnellstreet | kennedysofparnellstreet | ringsendpowerplant | ringsendpowerplant | gearoiduahuallachain | gearoiduahuallachain | dublinportanddocksboardpowerstation | dublinportanddocksboardpowerstation | fourcourtscommand | fourcourtscommand | ashockingmurder | ashockingmurder | mrsplayfair | mrsplayfair | recordestablishedfirstto50kviews | recordestablishedfirstto50kviews | 100ishyearsago | 100ishyearsago

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Cu 65, Zn 35 (wt%) B4 brass, chill cast

Description

An good example of dendritic solidification, which occurs when the solidification front becomes unstable with respect to small perturbations. This results in the growth of the perturbations, producing dendrites (from the Greek for tree). Interdendritic β phase and purple-grey ZnO inclusions.

Subjects

alloy | brass | copper | dendrite | metal | zinc | 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/

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Cu 55, Zn 45 (wt%) brass, rapidly cooled

Description

Brasses with greater than 40% zinc usually consist of β primary dendrites surrounded by α phase. The lack of such a microstructure in this sample indicates that the cooling rate during casting was sufficiently rapid that dendrites were unable to form and consequently the microstructure consists entirely of β phase.

Subjects

alloy | brass | copper | metal | zinc | 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/

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Cu 55, Zn 45 (wt%) brass, rapidly cooled

Description

Brasses with greater than 40% zinc usually consist of β primary dendrites surrounded by α phase. The lack of such a microstructure in this sample indicates that the cooling rate during casting was sufficiently rapid that dendrites were unable to form and consequently the microstructure consists entirely of β phase.

Subjects

alloy | brass | copper | metal | zinc | 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/

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Cu 55, Zn 45 (wt%) brass, rapidly cooled

Description

Brasses with greater than 40% zinc usually consist of β primary dendrites surrounded by α phase. The lack of such a microstructure in this sample indicates that the cooling rate during casting was sufficiently rapid that dendrites were unable to form and consequently the microstructure consists entirely of β phase.

Subjects

alloy | brass | copper | metal | zinc | 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/

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Cu 52.5, Zn 47.5 (wt%) brass, as cast

Description

β brass consisting of large grains of β phase with Widmanstätten γ forming from the grain boundaries.

Subjects

alloy | brass | copper | metal | widmanstätten | zinc | 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/

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Cu 52.5, Zn 47.5 (wt%) brass, as cast

Description

β brass consisting of large grains of β phase with Widmanstätten γ forming from the grain boundaries.

Subjects

alloy | brass | copper | metal | widmanstätten | zinc | 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/

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Cu 52.5, Zn 47.5 (wt%) brass, as cast

Description

β brass consisting of large grains of β phase with Widmanstätten γ forming from the grain boundaries.

Subjects

alloy | brass | copper | metal | widmanstätten | zinc | 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/

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Cu 60, Zn 40 (wt%), slow cooling - equiaxed grains

Description

This sample was homogenised at 850 C and slowly furnace cooled to give ? and ? equiaxed grains. The slow cooling allows sufficient time for the required diffusion of solute between solidifying grains to occur to maintain equilibrium.

Subjects

alloy | brass | copper | metal | zinc | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoer

License

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Cu 55, Zn 45 (wt%) brass, as cast, dendritic

Description

A cast alloy of high zinc brass, consisting of β dendrites. The α precipitates out of solution at the crystal boundaries, forming a structure of β dendrites surrounded by α. This is known as a Widmanstätten structure because a geometrical pattern of α forms on certain crystallographic orientations of the β lattice.

Subjects

alloy | brass | copper | metal | widmanstätten | zinc | 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/

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Cu 55, Zn 45 (wt%) brass, as cast, dendritic

Description

A cast alloy of high zinc brass, consisting of β dendrites. The α precipitates out of solution at the crystal boundaries, forming a structure of β dendrites surrounded by α. This is known as a Widmanstätten structure because a geometrical pattern of α forms on certain crystallographic orientations of the β lattice.

Subjects

alloy | brass | copper | metal | widmanstätten | zinc | 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/

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Prof. Nick Childs - 'History of Brass Bands - The Golden Period'

Description

The repertoire played by bands has altered radically over many years. However, commissioning bodies have always been governed by a desire to attract the leading mainstream composers of the day to write original material for the medium. The so-called 'Golden Period', spanning the period between the Great Depression and the Second World War, encapsulates this ambition at its most successful. A sequence of seminal works, by John Ireland, Gustav Holst, Granville Bantock, Herbert Howells, and Sir Edward Elgar revitalised the repertory and placed amateur musicians in a place of honour within the British musical establishment. In an illustrated lecture, Prof. Nicholas Childs and the Black Dyke Band place this music in its wider context, from the production of the first original band composition

Subjects

ukoer | brass band | black dyke band | compositions | music history | Dance | Drama and Music | Creative Arts and Design | design | W000

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/

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Cu 60, Zn 40 (wt%), slow cooling - equiaxed grains

Description

This sample was homogenised at 850 C and slowly furnace cooled to give ? and ? equiaxed grains. The slow cooling allows sufficient time for the required diffusion of solute between solidifying grains to occur to maintain equilibrium.

Subjects

alloy | brass | copper | metal | zinc | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoer

License

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

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Cu 55, Zn 45 (wt%) brass, as cast, dendritic

Description

A cast alloy of high zinc brass, consisting of β dendrites. The α precipitates out of solution at the crystal boundaries, forming a structure of β dendrites surrounded by α. This is known as a Widmanstätten structure because a geometrical pattern of α forms on certain crystallographic orientations of the β lattice.

Subjects

alloy | brass | copper | metal | widmanstätten | zinc | 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/

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tten microstructure

Description

This sample has been air cooled. The fast cooling rate changes the morphology to a 'basket weave' appearance known as a Widmansttten microstructure. The ? phase precipitates out of the single ? phase during cooling to give ? plates in a ? matrix. The plates form in order to minimise strain energy.

Subjects

alloy | brass | copper | metal | tten | zinc | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoer

License

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

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Brass, exhibiting grain boundary nucleation

Description

A high zinc brass that forms large grains of β phase (yellow areas, due to higher copper content) and subsequently grains of γ form on β grain boundaries and also on non-metallic inclusions in the alloy.

Subjects

alloy | brass | copper | metal | zinc | 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/

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