Enhanced strength-plasticity synergy of 304 stainless steel by introducing gradient nanograined single austenite phase structure via USRP and induction annealing

doi:10.1016/j.matdes.2024.113123

IMR OpenIR

	Enhanced strength-plasticity synergy of 304 stainless steel by introducing gradient nanograined single austenite phase structure via USRP and induction annealing
	Yang, Ming 1,6; Lei, Lei 2,3; You, Yafang 1; Wang, Panzhi 4; Xu, Fahong 5; Zhao, Fei 1; Liang, Yilong 1
通讯作者	Lei, Lei(leileiacute@126.com) ; Zhao, Fei(fzhao@gzu.edu.cn)
	2024-08-01
发表期刊	MATERIALS & DESIGN
ISSN	0264-1275
卷号	244 页码:16
摘要	The drawback of low strength of 304 stainless steel could be overcome by fabricating gradient nanostructures (GNS). However, deformation-induced martensite results in magnetic generation and plasticity degradation. In this work, a single austenitic GNS 304 stainless steel is fabricated by first creating a dual -phase GNS through the ultrasonic surface rolling process (USRP), followed by rapid induction heating. The yield strength of the single austenite GNS (520 MPa) is 1.68 times higher than that of the homogeneous coarse-grained structure (310 MP) without sacrificing plasticity (elongation of 65 %). Quantitative calculations indicate that fine grain, dislocation, twinning, and back-stress strengthening contribute to the strength increment by 30 %, 17.5 %, 23.4 %, and 29.1 %, respectively. Coarse-grained regions deform mainly through FCC-HCP-BCC martensitic transformation, whereas the subsurface layer forms stacking faults and twins due to increased stacking fault energy caused by the reduction in grain size. At the topmost layer, the stress required to activate dislocations is lower than that for twinning. Under high-stress conditions, martensite forms along the nanograin boundaries via a phase transition from FCC to BCC. Consequently, the excellent plasticity of the single austenite GNS stems from the synergistic effects of high back-stress hardening, TRIP and TWIP effect.
关键词	Metastable austenitic stainless steel USRP Gradient nanostructure Plastic deformation mechanism TRIP and TWIP effect
资助者	Natural Science Foundation of Guizhou Province ; Guizhou Province Science and Technology Achievement Application and Industrialization Plan (Key) Project ; Central government guides local special projects
DOI	10.1016/j.matdes.2024.113123
收录类别	SCI
语种	英语
资助项目	Natural Science Foundation of Guizhou Province[[2020] 1Z046] ; Natural Science Foundation of Guizhou Province[ZK [2022] 023] ; Guizhou Province Science and Technology Achievement Application and Industrialization Plan (Key) Project[[2023] Major 001] ; Central government guides local special projects[[2024] 032]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:001261678000001
出版者	ELSEVIER SCI LTD
引用统计	被引频次：5[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/321006/187737
专题	中国科学院金属研究所
通讯作者	Lei, Lei; Zhao, Fei
作者单位	1.Guizhou Univ, Sch Mat & Met, Guiyang 550025, Peoples R China 2.Yangtze Univ, Sch Phys & Optoelect Engn, Jingzhou 434023, Peoples R China 3.Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 5.Guizhou Special Equipment Inspect & Testing Inst, Guiyang 550025, Peoples R China 6.Wuhan Univ, Sch Power & Mech Engn, Wuhan 430072, Peoples R China
推荐引用方式 GB/T 7714	Yang, Ming,Lei, Lei,You, Yafang,et al. Enhanced strength-plasticity synergy of 304 stainless steel by introducing gradient nanograined single austenite phase structure via USRP and induction annealing[J]. MATERIALS & DESIGN,2024,244:16.
APA	Yang, Ming.,Lei, Lei.,You, Yafang.,Wang, Panzhi.,Xu, Fahong.,...&Liang, Yilong.(2024).Enhanced strength-plasticity synergy of 304 stainless steel by introducing gradient nanograined single austenite phase structure via USRP and induction annealing.MATERIALS & DESIGN,244,16.
MLA	Yang, Ming,et al."Enhanced strength-plasticity synergy of 304 stainless steel by introducing gradient nanograined single austenite phase structure via USRP and induction annealing".MATERIALS & DESIGN 244(2024):16.