期刊
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
卷 45A, 期 2, 页码 709-716出版社
SPRINGER
DOI: 10.1007/s11661-013-2047-6
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资金
- WCU (World Class University) program through the National Research Foundation of Korea
- Ministry of Education, Science and Technology [R32-10147]
- POSCO
The exceptional elongation obtained during tensile testing of intercritically annealed 10 pct Mn steel, with a two phase ferrite-austenite microstructure at room temperature, was investigated. The austenite phase exhibited deformation-twinning and strain-induced transformation to martensite. These two plasticity-enhancing mechanisms occurred in succession, resulting in a high rate of work hardening and a total elongation of 65 pct for a tensile strength of 1443 MPa. A constitutive model for the tensile behavior of the 10 pct Mn steel was developed using the Kocks-Mecking hardening model. (C) The Minerals, Metals & Materials Society and ASM International 2013
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