Microstructural evolution associated with shear location of AISI 52100 under high strain rate loading

doi:10.1016/j.msea.2016.03.050

CORC > 兰州理工大学 > 兰州理工大学

	Microstructural evolution associated with shear location of AISI 52100 under high strain rate loading
	Li, Shu-Xin 1,2; Zhao, Peng-Cheng 2; He, Yan-Ni 2; Yu, Shu-Rong 2
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2016-04-26
卷号	662 页码:46-53
关键词	Adiabatic shear bands (ASBs) Grain refinement Equiaxed grains Dynamic recrystallization Cementite dissolution
ISSN号	0921-5093
DOI	10.1016/j.msea.2016.03.050
英文摘要	The microstructure evolution of adiabatic shear bands (ASBs) in AISI 52100 produced under high strain rate impact loading was investigated by using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). A full view of the shear band formation and development was presented. The results reveal that no strain hardening effect occurred in the AISI 52100 under the dynamic loading. Two distinct regions of the ASBs and the transition region were observed. Driven by the high shear deformation and assisted by a thermal softening effect, the formation of ASBs started in the core region under the dominant mechanism of dynamic recrystallization. It is followed by the formation of neighbouring region under the co-action of both dynamic recovery and dynamic recrystallization. Then the transition region formed which was controlled by dynamic recovery. The core region of ASBs was consisted of subgrains and fine equiaxed grains. The grains were refined either through partitioning and breaking down the elongated subgrains by entangled dislocations clusters or through splitting and rotating the elongated subgrains into small grains under a synergistic effect of shearing and twisting. The amount and size of cementites were greatly reduced in ASBs due to cementite dissolution induced by large plastic deformation and dynamic recrystallization. (C) 2016 Elsevier B.V. All rights reserved.
资助项目	Hongliu Excellence Youth Plan of Lanzhou University of Technology[J201302]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000375164300006
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/33720]
专题	兰州理工大学
通讯作者	Li, Shu-Xin
作者单位	1.Ningbo Univ, Sch Mech Engn & Mech, Ningbo 315211, Zhejiang, Peoples R China 2.Lanzhou Univ Technol, Sch PetroChem Engn, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Li, Shu-Xin,Zhao, Peng-Cheng,He, Yan-Ni,et al. Microstructural evolution associated with shear location of AISI 52100 under high strain rate loading[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2016,662:46-53.
APA	Li, Shu-Xin,Zhao, Peng-Cheng,He, Yan-Ni,&Yu, Shu-Rong.(2016).Microstructural evolution associated with shear location of AISI 52100 under high strain rate loading.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,662,46-53.
MLA	Li, Shu-Xin,et al."Microstructural evolution associated with shear location of AISI 52100 under high strain rate loading".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 662(2016):46-53.