A Hot-Stamped Medium-Mn Steel with Superior Strength-Ductility-Bendability Combination and Thin Oxidation Layer

doi:10.1002/srin.202300553

IMR OpenIR

	A Hot-Stamped Medium-Mn Steel with Superior Strength-Ductility-Bendability Combination and Thin Oxidation Layer
	Wang, Hesong 1; Yan, Fengkai 1; Chang, Zhiyuan 2
通讯作者	Wang, Hesong(hswang@imr.ac.cn) ; Chang, Zhiyuan(yjyczy@pzhsteel.com.cn)
	2024-03-08
发表期刊	STEEL RESEARCH INTERNATIONAL
ISSN	1611-3683
页码	13
摘要	A hot-stamped medium-Mn steel containing 3.84 wt% Mn is designed for the manufacture of hot-stamped automotive components. The effects of intercritical temperatures employed for hot forming on the microstructure, tensile properties, and three-point bending behaviors are investigated. The result shows that the microstructure can be controlled by intercritical temperatures, leading to different phase fractions of martensite, retained austenite, and ferrite in the steels. Besides, the tensile strength increases with increasing intercritical temperature, while both the total elongation and the bending angle show reverse change trend, which are related to the various phase fractions and the different transformation-induced plasticity effects during deformation. Importantly, the medium-Mn steel subjected to heat treatment at 800 degrees C possesses tensile strength of 1535 MPa, total elongation of 13.8%, and bending angle of approximate to 56 degrees. Therefore, its total elongation is significantly higher than hot-stamped 22MnB5 steel under the same tensile strength grade, and the bending angle of the former is close to the latter. Moreover, the thickness of oxidation layer on the medium-Mn steel is only approximate to 3.5 mu m after heat treatment at 800 degrees C, much thinner than the approximate to 57 mu m-thick oxidation layer on the 22MnB5 steel after austenitizing at 930 degrees C. Herein, a hot-stamped medium-Mn steel containing 3.84 wt% Mn is designed for the manufacture of hot-stamped automotive components. The tensile property, bending performance, and oxidation resistance act as relatively excellent. The hot-stamped steel possesses tensile strength of 1535 MPa, total elongation of 13.8%, bending angle of approximate to 56 degrees, and a approximate to 3.5 mu m-thick oxidation layer.image (c) 2024 WILEY-VCH GmbH
关键词	hot-stamped medium-Mn steels intercritical temperatures oxidation layers tensile properties three-point bending
资助者	National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; Young Talent Program of Shenyang National Laboratory for Materials Science
DOI	10.1002/srin.202300553
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China ; China Postdoctoral Science Foundation[2023M733571] ; Young Talent Program of Shenyang National Laboratory for Materials Science ; [52171129]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001180717100001
出版者	WILEY-V C H VERLAG GMBH
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/184870
专题	中国科学院金属研究所
通讯作者	Wang, Hesong; Chang, Zhiyuan
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.State Key Lab Vanadium & Titanium Resources Compre, Panzhihua 617000, Peoples R China
推荐引用方式 GB/T 7714	Wang, Hesong,Yan, Fengkai,Chang, Zhiyuan. A Hot-Stamped Medium-Mn Steel with Superior Strength-Ductility-Bendability Combination and Thin Oxidation Layer[J]. STEEL RESEARCH INTERNATIONAL,2024:13.
APA	Wang, Hesong,Yan, Fengkai,&Chang, Zhiyuan.(2024).A Hot-Stamped Medium-Mn Steel with Superior Strength-Ductility-Bendability Combination and Thin Oxidation Layer.STEEL RESEARCH INTERNATIONAL,13.
MLA	Wang, Hesong,et al."A Hot-Stamped Medium-Mn Steel with Superior Strength-Ductility-Bendability Combination and Thin Oxidation Layer".STEEL RESEARCH INTERNATIONAL (2024):13.