SSL [SSL]Prof.Sung-Joon Kim:C clustering and partitioning by static strain aging in cold-rolled 16Cr-5Ni…
페이지 정보
작성자 최고관리자
댓글 0건 조회 637회 작성일 2022-03-02 10:59
본문
Static strain aging behavior of cold-rolled 16Cr-5Ni supermartensitic stainless steel was investigated after it had been aged for 30 min at 400 °C. In uniaxial tensile tests of 20% cold-rolled specimens, increase of yield strength to ~300 MPa and decrease of strain hardening rate were observed in the aged specimen, compared to the as-rolled specimen. In interrupted tensile tests, delayed martensitic transformation was observed in the aged specimen. Dilatometry analysis detected volume shrinkage during the 30 min hold- ing period at 400 °C indicating partitioning of carbon (C) from α’ martensite to austenite. The clustering of C in α’ martensite was confirmed by impulse internal friction technique with observation of Cottrell at- mosphere formation. 3D atom probe tomography analysis revealed partitioning of C atoms into austenite and clustering of C atoms in the α’ martensite. The remarkable increase of yield strength was attributed to redistribution of C atoms during the aging treatment.
관련링크
- 이전글[PML]Prof. Eul-Bum Lee: A Digitalized Design Risk Analysis Tool with Machine-Learning Algorithm for EPC Contractor’s Technical Specifications Assessment on Bidding 22.03.23
- 다음글[SSL] Prof. Sung-Joon Kim: Counter-balancing effects of Si on C partitioning and stacking fault energy of austenite in 10Mn quenching and partitioning steel 22.02.22
댓글목록
등록된 댓글이 없습니다.