{"id":{"repo_id":"cape-town","oai_identifier":"oai:open.uct.ac.za:11427/21860"},"canonical_url":"https://search.dev.ndltd.org/etd/cape-town/oai:open.uct.ac.za:11427/21860","repository":{"repo_id":"cape-town","name":"University of Cape Town","base_url":"https://open.uct.ac.za/oai/request"},"display":{"title":"The microstructure and some phase transformation characteristics of the dual phase steel 3CR12","abstract":"Oilatometry and metallography have been used to establish the phase transformation diagram of a steel containing 12% chromium and 0,03% carbon. A dual phase material with attractive mechanical properties and adequate corrosion resistance can be achieved by careful control of alloy content and heat treatment. The work has demonstrated the influence of the addition of alloying elements (in particular nickel), and thermal history. The dual phase (ferrite plus martensite) nature of the steel has been identified and characterised by both optical and transmission electron microscopy. The islands of lath martensite and the attendant high dislocation densities present good mechanical behaviour. In particular, the continuous yielding, work hardening, formability and toughness can be attributed to this microstructure. The thesis provides a base for the discussion of methods of \"designing\" the steel for particular applications.","abstract_html":"Oilatometry and metallography have been used to establish the phase transformation diagram of a steel containing 12% chromium and 0,03% carbon. A dual phase material with attractive mechanical properties and adequate corrosion resistance can be achieved by careful control of alloy content and heat treatment. The work has demonstrated the influence of the addition of alloying elements (in particular nickel), and thermal history. The dual phase (ferrite plus martensite) nature of the steel has been identified and characterised by both optical and transmission electron microscopy. The islands of lath martensite and the attendant high dislocation densities present good mechanical behaviour. In particular, the continuous yielding, work hardening, formability and toughness can be attributed to this microstructure. The thesis provides a base for the discussion of methods of "designing" the steel for particular applications.","abstract_has_math":false,"creators":["Protopappas, Eugenie"],"institution":"Centre for Materials Engineering","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Ball, Anthony"],"committee_chairs":[],"committee_members":[],"year":1983,"date_issued":"1983","date_published":"1983","updated_at":"2026-07-22T22:23:39Z","subjects":[],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/11427/21860","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Ball, Anthony"]},{"key":"dc:creator","label":"Author","values":["Protopappas, Eugenie"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2016-09-25T16:11:02Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2016-09-25T16:11:02Z"]},{"key":"dc:date.issued","label":"Date","values":["1983"]},{"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 (Eng)"]}]},{"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/11427/21860"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Bibliography: pages 150-163."]},{"key":"dc:description.abstract","label":"Abstract","values":["Oilatometry and metallography have been used to establish the phase transformation diagram of a steel containing 12% chromium and 0,03% carbon. A dual phase material with attractive mechanical properties and adequate corrosion resistance can be achieved by careful control of alloy content and heat treatment. The work has demonstrated the influence of the addition of alloying elements (in particular nickel), and thermal history. The dual phase (ferrite plus martensite) nature of the steel has been identified and characterised by both optical and transmission electron microscopy. The islands of lath martensite and the attendant high dislocation densities present good mechanical behaviour. In particular, the continuous yielding, work hardening, formability and toughness can be attributed to this microstructure. The thesis provides a base for the discussion of methods of \"designing\" the steel for particular applications."]},{"key":"dc:title","label":"Title","values":["The microstructure and some phase transformation characteristics of the dual phase steel 3CR12"]}]}],"canonical_facts":{"dc:contributor.advisor":["Ball, Anthony"],"dc:creator":["Protopappas, Eugenie"],"dc:date.accessioned":["2016-09-25T16:11:02Z"],"dc:date.available":["2016-09-25T16:11:02Z"],"dc:date.issued":["1983"],"dc:description":["Bibliography: pages 150-163."],"dc:description.abstract":["Oilatometry and metallography have been used to establish the phase transformation diagram of a steel containing 12% chromium and 0,03% carbon. A dual phase material with attractive mechanical properties and adequate corrosion resistance can be achieved by careful control of alloy content and heat treatment. The work has demonstrated the influence of the addition of alloying elements (in particular nickel), and thermal history. The dual phase (ferrite plus martensite) nature of the steel has been identified and characterised by both optical and transmission electron microscopy. The islands of lath martensite and the attendant high dislocation densities present good mechanical behaviour. In particular, the continuous yielding, work hardening, formability and toughness can be attributed to this microstructure. The thesis provides a base for the discussion of methods of \"designing\" the steel for particular applications."],"dc:identifier.uri":["http://hdl.handle.net/11427/21860"],"dc:language.iso":["eng"],"dc:publisher.department":["Centre for Materials Engineering"],"dc:publisher.institution":["University of Cape Town"],"dc:title":["The microstructure and some phase transformation characteristics of the dual phase steel 3CR12"],"dc:type":["Master Thesis"],"dc:type.qualificationlevel":["Masters"],"dc:type.qualificationname":["MSc (Eng)"]},"updated_at":"2026-07-22T22:23:39Z"}