Tensile Behaviors and Strain Hardening Mechanisms in a High-Mn Steel with Heterogeneous Microstructure

doi:10.3390/ma15103542

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

	Tensile Behaviors and Strain Hardening Mechanisms in a High-Mn Steel with Heterogeneous Microstructure
	Zhang, Shengde 1,2; Liu, Yanke 1,2; Wang, Jian 1,2; Qin, Shuang 2; Wu, Xiaolei 1,2; Yuan, Fuping 1,2
刊名	MATERIALS
	2022-05-01
卷号	15 期号:10 页码:13
关键词	microband-induced plasticity heterogeneous structures steels strain hardening strengthening ductility
DOI	10.3390/ma15103542
通讯作者	Qin, Shuang(qinshuang@imech.ac.cn) ; Yuan, Fuping(fpyuan@lnm.imech.ac.cn)
英文摘要	Heterogeneous structures with both heterogeneous grain structure and dual phases have been designed and obtained in a high-Mn microband-induced plasticity (MBIP) steel. The heterogeneous structures show better synergy of strength and ductility as compared to the homogeneous structures. Higher contribution of hetero-deformation induced hardening to the overall strain hardening was observed and higher density of geometrically necessary dislocations were found to be induced at various domain boundaries in the heterogeneous structures, resulting in higher extra strain hardening for the observed better tensile properties as compared to the homogeneous structures. MBIP effect is found to be still effective in the coarse austenite grains of heterogeneous structures, while the typical Taylor lattice structure and the formation of microband are not observed in the ultra-fine austenite grains of heterogeneous structures, indicating that decreasing grain size might inhibit the occurrence of microbands. High density of dislocation is also observed in the interiors of BCC grains, indicating that both phases are deformable and can accommodate plastic deformation. It is interesting to note that the deformation mechanisms are highly dependent on the phase and grain size for the present MBIP steel with heterogeneous structures.
资助项目	National Key R&D Program of China[2017YFA0204402] ; National Natural Science Foundation of China[11790293] ; China Postdoctoral Science Foundation[2021M703292] ; NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics[11988102]
WOS关键词	GRADIENT PLASTICITY ; INTERNAL-STRESSES ; ENTROPY ALLOY ; HIGH-STRENGTH ; DEFORMATION ; DUCTILITY ; GRAIN ; EVOLUTION ; METALS ; TWIN
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics
语种	英语
WOS记录号	WOS:000801732200001
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/89531]
专题	力学研究所_非线性力学国家重点实验室
通讯作者	Qin, Shuang; Yuan, Fuping
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 2.Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, 15 Beisihuan West Rd, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Shengde,Liu, Yanke,Wang, Jian,et al. Tensile Behaviors and Strain Hardening Mechanisms in a High-Mn Steel with Heterogeneous Microstructure[J]. MATERIALS,2022,15(10):13.
APA	Zhang, Shengde,Liu, Yanke,Wang, Jian,Qin, Shuang,Wu, Xiaolei,&Yuan, Fuping.(2022).Tensile Behaviors and Strain Hardening Mechanisms in a High-Mn Steel with Heterogeneous Microstructure.MATERIALS,15(10),13.
MLA	Zhang, Shengde,et al."Tensile Behaviors and Strain Hardening Mechanisms in a High-Mn Steel with Heterogeneous Microstructure".MATERIALS 15.10(2022):13.