Mechanical Properties of Steels Treated by Q-P-T Process Incorporating Carbide-free-bainite/martensite Multiphase Microstructure

被引：9

作者：

Tan, Zhun-li ^{[1
]}

Wang, Kai-kai ^{[1
]}

Gao, Gu-hui ^{[1
]}

Gui, Xiao-lu ^{[1
]}

Bai, Bing-zhe ^{[1
,2
]}

Weng, Yu-qing ^{[3
]}

机构：

[1] Beijing Jiaotong Univ, Mat Sci & Engn Ctr, Beijing 100044, Peoples R China

[2] Tsinghua Univ, Sch Mat Sci & Engn, Key Lab Adv Mat, Beijing 100084, Peoples R China

[3] Chinese Soc Met, Beijing 100044, Peoples R China

来源：

JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL | 2014年 / 21卷 / 02期

基金：

中国国家自然科学基金;

关键词：

carbide-free bainite; multiphase microstructure; quenching-partitioning-tempering; partitioning time; mechanical property; MEDIUM-CARBON; BAINITE; TRANSFORMATION; MARTENSITE; AUSTENITE; STRENGTH;

D O I：

10.1016/S1006-706X(14)60029-7

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Quenching-partitioning-tempering (Q-P-T) process were applied to a quenched carbide-free bainite/martensite (CFB/M) multiphase steel 40Mn2Si2Cr and its effect on the mechanical properties was studied. The results showed that the partitioning time of Q-P-T treatment can be increased greatly to 90 min or even longer. The tensile strength, elongation and product of strength and elongation (PSE) of the experimental steel can achieve 1650 MPa, about 20% and over 33 GPa . 5/a, respectively. The significant increase of partitioning time and excellent mechanical properties could be related to the CFB microstructure introduced in the quenching process during the Q-P-T treatment.

引用

页码：191 / 196

页数：6

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