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초록
It is a major factor that the retained austenite fraction to determine mechanical properties of cold rolled TRIP-assisted steels. To obtain the maximum retained austenite, cementite is retarded by addition of Si, Al at isothermal bainite transformation heat treatment (IBT). In this study, carbide free bainitic-ferrite and cementite transformation behaviors are simulated by classical nucleation and growth model, and it is predicted that complex transformation behavior as the formation of cementite during carbide free bainitic-ferrite transformation at IBT. The effect on bainite transformation behavior as Si, Al contents is investigated by dilatometric and XRD experiments, results which are compared with the modeling are analyzed.
키워드
Bainitic ferrite; Carbon behaviors; Cementite; Modeling; Phase transformation; TRIP-assisted steels; Al content; Bainite transformations; Bainitic ferrite; Carbon behavior; Classical nucleation; Complex transformations; Ferrite transformation; Modeling phase transformation; Phase transformation behavior; Retained austenite; Transformation behavior; TRIP-assisted steels; XRD; Austenite; Bainite; Carbides; Computer simulation; Ferrite; Functional electric stimulation; Mechanical properties; Metal cladding; Steel metallography; Wear resistance; Bainitic transformations
- 제목
- Modeling of phase transformation behaviors by cementite formation at isothermal bainite transformation region in TRIP-assisted steels
- 저자
- Park, B.J.; Choi, J.M.; Kim, S.I.; Lee, K.J.
- 발행일
- 2010-01
- 유형
- Conference Paper
- 저널명
- TMS Annual Meeting
- 권
- 2
- 페이지
- 349 ~ 356