{"id":{"repo_id":"cape-town","oai_identifier":"oai:open.uct.ac.za:11427/10578"},"canonical_url":"https://search.dev.ndltd.org/etd/cape-town/oai:open.uct.ac.za:11427/10578","repository":{"repo_id":"cape-town","name":"University of Cape Town","base_url":"https://open.uct.ac.za/oai/request"},"display":{"title":"Grain refinement in cast titanium 6-aluminium 4-vanadium by hydrogenation, deformation and recrystallisation","abstract":"Wrought Ti6Al4V has attractive mechanical properties but its usage is limited to highend aerospace applications because it is costly to machine components from wrought stock. Investment casting is an alternative component manufacturing route but cast components have inferior mechanical properties to their wrought counterparts. Therefore, microstructure refinement is required in order to optimize these mechanical properties. The aim of this work is to refine the as-cast Ti6Al4V microstructure by reducing its prior beta grain sizes and changing its Widmanstatten morphology. Refinement was achieved through combining thermohydrogen processing (THP) and hot deformation.","abstract_html":"Wrought Ti6Al4V has attractive mechanical properties but its usage is limited to highend aerospace applications because it is costly to machine components from wrought stock. Investment casting is an alternative component manufacturing route but cast components have inferior mechanical properties to their wrought counterparts. Therefore, microstructure refinement is required in order to optimize these mechanical properties. The aim of this work is to refine the as-cast Ti6Al4V microstructure by reducing its prior beta grain sizes and changing its Widmanstatten morphology. Refinement was achieved through combining thermohydrogen processing (THP) and hot deformation.","abstract_has_math":false,"creators":["Vilane, Velile Nicholine"],"institution":"Centre for Materials Engineering","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Knutsen, Robert D"],"committee_chairs":[],"committee_members":[],"year":2013,"date_issued":"2013","date_published":"2013","updated_at":"2026-07-22T22:23:00Z","subjects":[],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/11427/10578","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Knutsen, Robert D"]},{"key":"dc:creator","label":"Author","values":["Vilane, Velile Nicholine"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2014-12-30T19:36:41Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2014-12-30T19:36:41Z"]},{"key":"dc:date.issued","label":"Date","values":["2013"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["Centre for Materials Engineering"]},{"key":"dc:publisher.institution","label":"Dc Publisher Institution","values":["University of Cape Town"]},{"key":"dc:type","label":"Dc Type","values":["Master Thesis"]},{"key":"dc:type.qualificationlevel","label":"Dc Type Qualificationlevel","values":["Masters"]},{"key":"dc:type.qualificationname","label":"Dc Type Qualificationname","values":["MSc"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/11427/10578"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Includes bibliographical references."]},{"key":"dc:description.abstract","label":"Abstract","values":["Wrought Ti6Al4V has attractive mechanical properties but its usage is limited to highend aerospace applications because it is costly to machine components from wrought stock. Investment casting is an alternative component manufacturing route but cast components have inferior mechanical properties to their wrought counterparts. Therefore, microstructure refinement is required in order to optimize these mechanical properties. The aim of this work is to refine the as-cast Ti6Al4V microstructure by reducing its prior beta grain sizes and changing its Widmanstatten morphology. Refinement was achieved through combining thermohydrogen processing (THP) and hot deformation."]},{"key":"dc:title","label":"Title","values":["Grain refinement in cast titanium 6-aluminium 4-vanadium by hydrogenation, deformation and recrystallisation"]}]}],"canonical_facts":{"dc:contributor.advisor":["Knutsen, Robert D"],"dc:creator":["Vilane, Velile Nicholine"],"dc:date.accessioned":["2014-12-30T19:36:41Z"],"dc:date.available":["2014-12-30T19:36:41Z"],"dc:date.issued":["2013"],"dc:description":["Includes bibliographical references."],"dc:description.abstract":["Wrought Ti6Al4V has attractive mechanical properties but its usage is limited to highend aerospace applications because it is costly to machine components from wrought stock. Investment casting is an alternative component manufacturing route but cast components have inferior mechanical properties to their wrought counterparts. Therefore, microstructure refinement is required in order to optimize these mechanical properties. The aim of this work is to refine the as-cast Ti6Al4V microstructure by reducing its prior beta grain sizes and changing its Widmanstatten morphology. Refinement was achieved through combining thermohydrogen processing (THP) and hot deformation."],"dc:identifier.uri":["http://hdl.handle.net/11427/10578"],"dc:language.iso":["eng"],"dc:publisher.department":["Centre for Materials Engineering"],"dc:publisher.institution":["University of Cape Town"],"dc:title":["Grain refinement in cast titanium 6-aluminium 4-vanadium by hydrogenation, deformation and recrystallisation"],"dc:type":["Master Thesis"],"dc:type.qualificationlevel":["Masters"],"dc:type.qualificationname":["MSc"]},"updated_at":"2026-07-22T22:23:00Z"}