Strain rate response of mechanical behaviors for Fe-8Mn-6Al-0.4C duplex low-density steels with different austenite stabilities

doi:10.1016/j.msea.2022.144475

IMR OpenIR

	Strain rate response of mechanical behaviors for Fe-8Mn-6Al-0.4C duplex low-density steels with different austenite stabilities
	Chen, Rong 1,4; Chen, Peng 1,3; Li, Xiao-Wu 1,2
通讯作者	Chen, Peng(chenpeng@mail.neu.edu.cn) ; Li, Xiao-Wu(xwli@mail.neu.edu.cn)
	2023-01-18
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	862 页码:10
摘要	Duplex low-density steels exhibit excellent mechanical properties under quasi-static tensile tests with the help of the transformation-induced plastic (TRIP) effect produced by the deformation-induced martensitic trans-formation (DIMT), which is sensitive to the strain rate. Therefore, adjusting the microstructure to accommodate the deformation at different strain rates is crucial for the optimal design of high-performance duplex low-density steels. In this study, Fe-8Mn-6Al-0.4C low-density steel was subjected to intercritical annealing (IA) treatment to obtain duplex microstructures with an inhomogeneous distribution of austenite grain sizes and tensile tests were performed at two strain rates. The response of the mechanical behavior to the strain rate was investigated, and the mechanical stability of austenite was evaluated using a method based on the grain size. The results show that the diverse mechanical behaviors of experimental steel depend mainly on the mechanical stability of austenite rather than the stacking fault energy (SFE). The mechanical stability of austenite increased with decreasing annealing temperature and was further enhanced by adiabatic heating at a higher strain rate. Accordingly, the DIMT mode changed from a stress-induced transformation to a strain-induced transformation until the DIMT was inhibited by adiabatic heating. The improvement in the mechanical properties of the experimental steel is attributed to the sustainable DIMT with a reasonable mechanical stability of austenite.
关键词	Duplex low-density steel Mechanical behavior Strain rate Austenite stability Deformation-induced martensitic transformation Transformation-induced plasticity
资助者	National Natural Science Foundation of China ; Funda-mental Research Funds for the Central University
DOI	10.1016/j.msea.2022.144475
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52171108] ; National Natural Science Foundation of China[51804072] ; Funda-mental Research Funds for the Central University[N2202007]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000905156700002
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：10[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/321006/175667
专题	中国科学院金属研究所
通讯作者	Chen, Peng; Li, Xiao-Wu
作者单位	1.Northeastern Univ, Sch Mat Sci & Engn, Dept Mat Phys & Chem, Shenyang 110819, Peoples R China 2.Northeastern Univ, State Key Lab Rolling & Automation, Shenyang 110819, Peoples R China 3.Northeastern Univ, Key Lab Anisotropy & Texture Mat, Shenyang 110819, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Chen, Rong,Chen, Peng,Li, Xiao-Wu. Strain rate response of mechanical behaviors for Fe-8Mn-6Al-0.4C duplex low-density steels with different austenite stabilities[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2023,862:10.
APA	Chen, Rong,Chen, Peng,&Li, Xiao-Wu.(2023).Strain rate response of mechanical behaviors for Fe-8Mn-6Al-0.4C duplex low-density steels with different austenite stabilities.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,862,10.
MLA	Chen, Rong,et al."Strain rate response of mechanical behaviors for Fe-8Mn-6Al-0.4C duplex low-density steels with different austenite stabilities".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 862(2023):10.