Investigation of the microstructural evolution in Ti-6A1-4V alloy during cyclic hydrogenation and dehydrogenation heat treatment

 

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dc.contributor.advisor Knutsen, Robert D en_ZA
dc.contributor.author Oguh, Jeremiah Chika en_ZA
dc.date.accessioned 2014-07-31T11:19:20Z
dc.date.available 2014-07-31T11:19:20Z
dc.date.issued 2008 en_ZA
dc.identifier.citation Oguh, J. 2008. Investigation of the microstructural evolution in Ti-6A1-4V alloy during cyclic hydrogenation and dehydrogenation heat treatment. University of Cape Town. en_ZA
dc.identifier.uri http://hdl.handle.net/11427/5495
dc.description Includes abstract.
dc.description Includes bibliographical references (leaves 87-90).
dc.description.abstract The temporary alloying process involves a two stage heat treatment during which hydrogen is firstly introduced into the titanium sample (hydrogenation), and secondly removed from the sample under vacuum annealing (dehydrogenation), thereby completing the cycle. During the hydrogenation stage, the high diffusivity of hydrogen in titanium alloys at elevated temperatures is used to introduce hydrogen into the sample. Hydrogen being a stabilizing element of titanium alloys, lowers the β → (α+ β) transition temperature and slows the kinetics of the β → α phase transformation. This leads to the generation of new microstructures. Fine α-grain structures and martensitic plates were observed upon completion of the hydrogenation treatment. en_ZA
dc.language.iso eng en_ZA
dc.subject.other Mechanical Engineering en_ZA
dc.title Investigation of the microstructural evolution in Ti-6A1-4V alloy during cyclic hydrogenation and dehydrogenation heat treatment en_ZA
dc.type Master Thesis
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 and the Built Environment
dc.publisher.department Department of Mechanical Engineering en_ZA
dc.type.qualificationlevel Masters
dc.type.qualificationname MSc en_ZA
uct.type.filetype Text
dc.identifier.apacitation Oguh, J. C. (2008). <i>Investigation of the microstructural evolution in Ti-6A1-4V alloy during cyclic hydrogenation and dehydrogenation heat treatment</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Mechanical Engineering. Retrieved from http://hdl.handle.net/11427/5495 en_ZA
dc.identifier.chicagocitation Oguh, Jeremiah Chika. <i>"Investigation of the microstructural evolution in Ti-6A1-4V alloy during cyclic hydrogenation and dehydrogenation heat treatment."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Mechanical Engineering, 2008. http://hdl.handle.net/11427/5495 en_ZA
dc.identifier.vancouvercitation Oguh JC. Investigation of the microstructural evolution in Ti-6A1-4V alloy during cyclic hydrogenation and dehydrogenation heat treatment. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Mechanical Engineering, 2008 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/5495 en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Oguh, Jeremiah Chika AB - The temporary alloying process involves a two stage heat treatment during which hydrogen is firstly introduced into the titanium sample (hydrogenation), and secondly removed from the sample under vacuum annealing (dehydrogenation), thereby completing the cycle. During the hydrogenation stage, the high diffusivity of hydrogen in titanium alloys at elevated temperatures is used to introduce hydrogen into the sample. Hydrogen being a stabilizing element of titanium alloys, lowers the β → (α+ β) transition temperature and slows the kinetics of the β → α phase transformation. This leads to the generation of new microstructures. Fine α-grain structures and martensitic plates were observed upon completion of the hydrogenation treatment. DA - 2008 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2008 T1 - Investigation of the microstructural evolution in Ti-6A1-4V alloy during cyclic hydrogenation and dehydrogenation heat treatment TI - Investigation of the microstructural evolution in Ti-6A1-4V alloy during cyclic hydrogenation and dehydrogenation heat treatment UR - http://hdl.handle.net/11427/5495 ER - en_ZA


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