Investigation into hardness changes of Pd 11.1 at.% Cu and Pd 11.1 at .% Nb after heat treatments

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dc.contributor.authorFinkelstein, Luke Marcusen_ZA
dc.date.accessioned2015-10-06T13:56:22Z
dc.date.available2015-10-06T13:56:22Z
dc.date.issued2013en_ZA
dc.description.abstractTwo alloys, Pd 11.1 at.% Cu and Pd 11.1 at.% Nb, predicted to form the A8B ordered structure, were investigated. Prior deformation with systematic heat treatments was used to promote ordering, hardness tests were used to detect changes in the microstructure, which might result from ordering. The Pd-Cu alloy and Pd-Nb alloy did not exhibit any significant hardness changes when heat treated. Transmission Electron Microscopy (TEM) was used to aid detection of any A8B ordered phase in the Pd-Cu alloy. It was concluded that no ordering had occurred and any initial hardness variation was anomalous. The Pd-Nb alloy was further characterised using Differential Scanning Calorimetry, but no transformation was observed. The Pd-Cu alloy was predicted by other workers (after commencement of this project) to have a very low ordering temperature, which probably accounts for the lack of ordering at the temperatures reported here. The Pd-Nb alloy is concluded to be extremely slow in atomic rearrangement, so that unfavourable thermodynamics prevented ordering of the alloy during this project.en_ZA
dc.identifier.apacitationFinkelstein, L. M. (2013). <i>Investigation into hardness changes of Pd 11.1 at.% Cu and Pd 11.1 at .% Nb after heat treatments</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Materials Engineering. Retrieved from http://hdl.handle.net/11427/14136en_ZA
dc.identifier.chicagocitationFinkelstein, Luke Marcus. <i>"Investigation into hardness changes of Pd 11.1 at.% Cu and Pd 11.1 at .% Nb after heat treatments."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Materials Engineering, 2013. http://hdl.handle.net/11427/14136en_ZA
dc.identifier.citationFinkelstein, L. 2013. Investigation into hardness changes of Pd 11.1 at.% Cu and Pd 11.1 at .% Nb after heat treatments. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Finkelstein, Luke Marcus AB - Two alloys, Pd 11.1 at.% Cu and Pd 11.1 at.% Nb, predicted to form the A8B ordered structure, were investigated. Prior deformation with systematic heat treatments was used to promote ordering, hardness tests were used to detect changes in the microstructure, which might result from ordering. The Pd-Cu alloy and Pd-Nb alloy did not exhibit any significant hardness changes when heat treated. Transmission Electron Microscopy (TEM) was used to aid detection of any A8B ordered phase in the Pd-Cu alloy. It was concluded that no ordering had occurred and any initial hardness variation was anomalous. The Pd-Nb alloy was further characterised using Differential Scanning Calorimetry, but no transformation was observed. The Pd-Cu alloy was predicted by other workers (after commencement of this project) to have a very low ordering temperature, which probably accounts for the lack of ordering at the temperatures reported here. The Pd-Nb alloy is concluded to be extremely slow in atomic rearrangement, so that unfavourable thermodynamics prevented ordering of the alloy during this project. DA - 2013 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2013 T1 - Investigation into hardness changes of Pd 11.1 at.% Cu and Pd 11.1 at .% Nb after heat treatments TI - Investigation into hardness changes of Pd 11.1 at.% Cu and Pd 11.1 at .% Nb after heat treatments UR - http://hdl.handle.net/11427/14136 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/14136
dc.identifier.vancouvercitationFinkelstein LM. Investigation into hardness changes of Pd 11.1 at.% Cu and Pd 11.1 at .% Nb after heat treatments. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Materials Engineering, 2013 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/14136en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentCentre for Materials Engineeringen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherMaterials Engineeringen_ZA
dc.titleInvestigation into hardness changes of Pd 11.1 at.% Cu and Pd 11.1 at .% Nb after heat treatmentsen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMEngen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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