Enhanced mechanical properties of a hot stamped advanced high-strength steel treated by quenching and partitioning process

被引：153
作者：
Liu, Heping [1 ]
Lu, Xianwen [1 ]
Jin, Xuejun [1 ]
Dong, Han [2 ]
Shi, Jie [2 ]
机构：
[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China
[2] Cent Iron & Steel Res Inst, Natl Engn Res Ctr Adv Steel Technol, Beijing 100081, Peoples R China
来源：
SCRIPTA MATERIALIA | 2011年 / 64卷 / 08期
关键词：
Hot stamping; Quenching and partitioning; Mechanical properties; Retained austenite; RETAINED AUSTENITE; TRANSFORMATIONS;
D O I：
10.1016/j.scriptamat.2010.12.037
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A 22MnB5-type steel has been investigated to generate a duplex microstructure comprising submicrometer or ultrafine retained austenite and martensite through a combination of hot stamping with quenching and partitioning process. The results indicate that the newly treated steel shows excellent mechanical properties and the total elongation of the steel increases from 6.6% to 14.8% compared with that of hot stamped and quenched steel. These improved properties can be attributed to the nanometric duplex microstructure comprising ultrafine retained austenite and martensite. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：749 / 752
页数：4
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