Simultaneous enhancement of strength and toughness of ultrafine-grained dual-phase steel with a bimodal lamellar microstructure

doi:10.1016/j.matlet.2022.133732

IMR OpenIR

	Simultaneous enhancement of strength and toughness of ultrafine-grained dual-phase steel with a bimodal lamellar microstructure
	Su, Yuanfei 1,2; Xu, Xiaoning 1; Li, Huijie 1; Ye, Qibin 3
通讯作者	Ye, Qibin(yeqb-iris@shasteel.cn)
	2023-03-15
发表期刊	MATERIALS LETTERS
ISSN	0167-577X
卷号	335 页码:5
摘要	A novel heterogeneous lamellar microstructure with ultrafine grains was successfully introduced into a DP590 steel plate using a simple two-step controlled rolling process (TCR) described in this work. The ferrite and martensite are laminated, with an average size of 1.7 mu m and 1.2 mu m, respectively. The ferrite shows a bimodal grain size distribution and intensified alpha-fiber and rotated cubic texture. Compared to conventional controlled-roll (CCR) steel, TCR steel demonstrated 46.6 % higher tensile strength with a considerably higher work hardening rate while maintaining a reasonably high uniform elongation of 12.1 %. Furthermore, the impact energy at -60 degrees C was increased by almost 100 %. The ultrafine-grained lamellar microstructure in TCR steel was believed to be responsible for the synergistic deformation and delamination fracture toughening that resulted in the simultaneous improvement in tensile and impact properties.
关键词	Ultrafine grain Heterogeneous lamellar structure Dual -phase steel High strength Working hardening Low -temperature toughness
资助者	Major R & D Project of Liaoning Province
DOI	10.1016/j.matlet.2022.133732
收录类别	SCI
语种	英语
资助项目	Major R & D Project of Liaoning Province[2020JH1/10100001]
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:000920833100001
出版者	ELSEVIER
引用统计	被引频次：4[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/321006/175366
专题	中国科学院金属研究所
通讯作者	Ye, Qibin
作者单位	1.Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 3.Sha Steel Co Ltd, Inst Res Iron & Steel, Zhangjiagang 215624, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Su, Yuanfei,Xu, Xiaoning,Li, Huijie,et al. Simultaneous enhancement of strength and toughness of ultrafine-grained dual-phase steel with a bimodal lamellar microstructure[J]. MATERIALS LETTERS,2023,335:5.
APA	Su, Yuanfei,Xu, Xiaoning,Li, Huijie,&Ye, Qibin.(2023).Simultaneous enhancement of strength and toughness of ultrafine-grained dual-phase steel with a bimodal lamellar microstructure.MATERIALS LETTERS,335,5.
MLA	Su, Yuanfei,et al."Simultaneous enhancement of strength and toughness of ultrafine-grained dual-phase steel with a bimodal lamellar microstructure".MATERIALS LETTERS 335(2023):5.