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.author Finkelstein, Luke Marcus en_ZA
dc.date.accessioned 2015-10-06T13:56:22Z
dc.date.available 2015-10-06T13:56:22Z
dc.date.issued 2013 en_ZA
dc.identifier.citation Finkelstein, 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.uri http://hdl.handle.net/11427/14136
dc.description.abstract 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. en_ZA
dc.language.iso eng en_ZA
dc.subject.other Materials Engineering en_ZA
dc.title Investigation into hardness changes of Pd 11.1 at.% Cu and Pd 11.1 at .% Nb after heat treatments en_ZA
dc.type Thesis / Dissertation en_ZA
uct.type.publication Research en_ZA
uct.type.resource Thesis en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Engineering & the Built Environment en_ZA
dc.publisher.department Centre for Materials Engineering en_ZA
dc.type.qualificationlevel Masters en_ZA
dc.type.qualificationname MEng en_ZA
uct.type.filetype Text
uct.type.filetype Image


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