Effects of nucleation site and morphology of carbide-free bainite on microstructures and properties of bainite/martensite multi-phase steels

被引：32
|
作者：
Zhao, Jingli [1 ]
Zhao, Xianming [1 ]
Zhao, Xiaoyu [1 ]
Dong, Chunyu [1 ]
Kang, Shouxu [1 ]
机构：
[1] Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Liaoning, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2019年 / 744卷
关键词：
Bainite-martensite multiphase; Nucleation site; Cooling rate; Mechanical properties; TEMPERATURE MECHANICAL-PROPERTIES; HEAT-TREATMENT; IMPROVEMENT;
D O I：
10.1016/j.msea.2018.11.060
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The microstructures and mechanical properties of bainite/martensite (B/M) multiphase steels treated with high temperature duration and continuous cooling were studied. The steels treated at 623 K and cooling rate of 0.5 K/s exhibited a multiphase microstructure containing carbide-free bainite, martensite and film-like retained aus-tenite. Observation in-situ showed the carbide-free bainite was nucleated and dispersed intragranularly with excellent tensile strength of 1920 MPa and total elongation of 14.6%.
引用
收藏
页码：86 / 93
页数：8
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