Excellent dynamic properties and corresponding deformation mechanisms in a microband-induced plasticity steel with dual-heterogeneous structure

doi:10.1016/j.jmrt.2023.11.007

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Excellent dynamic properties and corresponding deformation mechanisms in a microband-induced plasticity steel with dual-heterogeneous structure
	Zhang, Shengde 1,2; Wang, Wei 2; Yang, Muxin 2; Wu, Xiaolei 1,2; Yuan, Fuping 1,2
刊名	JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
	2023-11-01
卷号	27 页码:5350-5359
关键词	Microband-induced plasticity Dynamic properties Dual-heterogeneous structures Strain hardening Dynamic grain refinement Strain rate effect
ISSN号	2238-7854
DOI	10.1016/j.jmrt.2023.11.007
通讯作者	Wang, Wei(wangwei2@imech.ac.cn) ; Yuan, Fuping(fpyuan@lnm.imech.ac.cn)
英文摘要	A dual-heterogeneous structure with dual phases and heterogeneous grains was designed in a high Mn microband-induced-plasticity (MBIP) steel. The heterogeneous structured sample exhibits similar dynamic shear yield strength, while exhibiting enhanced dynamic uniform shear strain and dynamic shear toughness by 36 % and 47 %, respectively, as compared to the homogeneous structured sample. The strain hardening mechanisms contributing to the excellent dynamic shear properties in the heterogeneous structured sample have been revealed. Firstly, the superior hetero-deformation-induced hardening capability of the heterogeneous structured sample arises from a higher density of geometrically necessary dislocations induced in each phase. Secondly, a pronounced strain rate effect is observed in body-centered cubic (BCC) grains and face-centered cubic (FCC) ultra-fine grains, leading to an elevated level of strain rate sensitivity. Finally, the MBIP effect is also observed in FCC coarse grains under dynamic loading. Moreover, the MBIP effect in FCC ultra-fine grains is more likely to occur at high strain rates due to the emergence of single-wall domain boundaries, which is not observed during quasi-static tensile testing. The present results provide new routes for designing impact-tolerant structures in advanced metals and alloys.
资助项目	National Natural Science Foundation of China[11988102] ; [52192591]
WOS关键词	STRAIN-GRADIENT PLASTICITY ; MICROSTRUCTURE EVOLUTION ; SHEAR PROPERTIES ; HIGH-STRENGTH ; BEHAVIOR ; GRAIN ; ALLOY ; STATE ; TWIN
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
WOS记录号	WOS:001115514500001
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/93533]
专题	力学研究所_非线性力学国家重点实验室
通讯作者	Wang, Wei; Yuan, Fuping
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Shengde,Wang, Wei,Yang, Muxin,et al. Excellent dynamic properties and corresponding deformation mechanisms in a microband-induced plasticity steel with dual-heterogeneous structure[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2023,27:5350-5359.
APA	Zhang, Shengde,Wang, Wei,Yang, Muxin,Wu, Xiaolei,&Yuan, Fuping.(2023).Excellent dynamic properties and corresponding deformation mechanisms in a microband-induced plasticity steel with dual-heterogeneous structure.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,27,5350-5359.
MLA	Zhang, Shengde,et al."Excellent dynamic properties and corresponding deformation mechanisms in a microband-induced plasticity steel with dual-heterogeneous structure".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 27(2023):5350-5359.