Strengthening mechanism of hot rolled Ti and Nb microalloyed HSLA steels containing Mo and W with various coiling temperature

被引：114
|
作者：
Park, Dae-Bum [1 ,2 ]
Huh, Moo-Young [1 ]
Shim, Jae-Hyeok [2 ]
Suh, Jin-Yoo [2 ]
Lee, Kyu-Ho [1 ,2 ]
Jung, Woo-Sang [2 ]
机构：
[1] Korea Univ, Dept Mat Sci & Engn, Seoul 136713, South Korea
[2] Korea Inst Sci & Technol, High Temp Energy Mat Res Ctr, Seoul 136791, South Korea
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2013年 / 560卷
关键词：
HSLA steel; Complex carbide; Coiling temperature; strengthening mechanism; NANOMETER-SIZED CARBIDES; LOW-ALLOY STEELS; PRECIPITATION; FERRITE;
D O I：
10.1016/j.msea.2012.09.098
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The effect of Mo- and W-addition on the precipitation hardening of Ti- and Nb-microalloyed high-strength low-alloy steels was investigated. The variation in simulated hot-coiling temperature caused a significant difference in strength, which is attributed mainly to different precipitation-hardening behavior. Among the four alloys with different combination of the microalloying elements: Ti-Mo, Nb-Mo, Ti-W, and Nb-W, the steel with Nb-Mo turned out to be the most effective in precipitation hardening. The strengthening mechanism was discussed based on the microstructural evolution observed by electron microscopy and the theoretical considerations combining the different hardening models. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：528 / 534
页数：7
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