Effects of quenching and partitioning process on mechanical properties of TRIP780 steel

被引：5
作者：
Han, Xian-hong [1 ]
Wang, Cheng-long [1 ]
Li, Yuan-yuan [1 ]
Liu, Gang [2 ]
机构：
[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Natl Engn Res Ctr & Mold CAD, Shanghai 200030, Peoples R China
[2] Shanghai Marine Equipment Res Inst, Shanghai 200031, Peoples R China
来源：
JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL | 2019年 / 26卷 / 09期
基金：
中国国家自然科学基金;
关键词：
Transformation-induced plasticity steel; Quenching and partitioning process; Hot stamping; Mechanical property; RETAINED AUSTENITE; TRANSFORMATION; PLASTICITY; MARTENSITE; BEHAVIOR;
D O I：
10.1007/s42243-018-0183-3
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
A transformation-induced plasticity (TRIP) steel was applied to test its mechanical properties in quenching and partitioning (Q&P) process. A series of Q&P experiments followed by tensile tests, Charpy impact tests, fracture morphology analyses and microstructure observations were conducted. The experimental results showed that the Q&P treatment could increase the mechanical properties of TRIP steel evidently. The strength of tested TRIP780 after Q&P process reaches more than 1500 MPa with elongation of 17.8%, which is obviously greater than that of 22MnB5 after hot stamping. The microstructure observations indicate that the good combination of high strength and plasticity of TRIP steel after Q&P process is attributed to the multi-phase microstructure of hard martensite matrix and soft retained austenite.
引用
收藏
页码：991 / 999
页数：9
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