Observation of the TWIP + TRIP Plasticity-Enhancement Mechanism in Al-Added 6 Wt Pct Medium Mn Steel

被引：0
|
作者：
Seawoong Lee
Kyooyoung Lee
Bruno C. De Cooman
机构：
[1] Pohang University of Science and technology (POSTECH),Graduate Institute of Ferrous Technology
[2] POSCO Technical Research Laboratories,Materials Design Laboratory
[3] Pohang University of Science and Technology,undefined
来源：
Metallurgical and Materials Transactions A | 2015年 / 46卷
关键词：
Austenite; Stack Fault Energy; Intercritical Annealing; TWIP Steel; Mechanical Twinning;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The intercritically annealed Fe-0.15 pctC-6.0 pctMn-1.5 pctSi-3.0 pctAl and Fe-0.30 pctC-6.0 pctMn-1.5 pctSi-3.0 pctAl medium Mn steels were found to have improved mechanical properties due to the TWIP and TRIP plasticity-enhancing mechanisms being activated in succession during tensile deformation. The increase of the C content from 0.15 to 0.30 pct resulted in ultra-high strength properties and a strength-ductility balance of approximately 65,000 MPa-pct, i.e., equivalent to the strength-ductility balance of high Mn TWIP steel with a fully austenitic microstructure.
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页码：2356 / 2363
页数：7
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