Evolution of Adiabatic Shear Band in Ultra-Fine-Grained Iron under Dynamic Shear Loading

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	Evolution of Adiabatic Shear Band in Ultra-Fine-Grained Iron under Dynamic Shear Loading
	Yuan FP(袁福平); Wu XL(武晓雷)
	2011
会议名称	5th International Conference on Nanomaterials by Severe Plastic Deformation
会议日期	MAR 21-25, 2011
通讯作者邮箱	fpyuan@Inm.imech.ac.cn; xlwu@imech.ac.cn
会议地点	Nanjing, PEOPLES R CHINA
关键词	Adiabatic shear band UFG Fe Hat-shaped specimen EBSD SEVERE PLASTIC-DEFORMATION NANOCRYSTALLINE
卷号	667-669
页码	761-765
通讯作者	Yuan, FP (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
中文摘要	Ultra-fine-grained (UFG)/Nanocrystalline (NC) materials usually show reduced strain hardening and limited ductility due to formation of adiabatic shear band (ASB) under dynamic loading. In the present study, evolution of ASB in UFG Fe under dynamic shear loading was investigated. The UFG Fe was processed by equal-channel angular pressing (ECAP) via route B. After 6 passes, the grain size of UFG Fe reaches similar to 600 nm, as confirmed by means of Electron Back Scatter Diffraction (EBSD). Examination of micro-hardness and grain size of UFG Fe as a function of post-ECAP annealing temperature shows a transition from recovery to recrystallization at 500 degrees C. The high-strain-rate response of UFG Fe was characterized by hat-shaped specimen set-ups in Hopkinson bar experiments. The characteristics of ASB as a function of shear displacement, such as thickness of shear band and micro-hardness inside the shear band, were examined by SEM and Vickers micro-indentation respectively.
收录类别	CPCI-S ; EI
产权排序	Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
会议主办者	Nanjing Univ Sci & Technol
会议网址	http://dx.doi.org/10.4028/www.scientific.net/MSF.667-669.761
会议录	NANOMATERIALS BY SEVERE PLASTIC DEFORMATION: NANOSPD5, PTS 1 AND 2
会议录出版者	TRANS TECH PUBLICATIONS LTD
会议录出版地	LAUBLSRUTISTR 24, CH-8717 STAFA-ZURICH, SWITZERLAND
学科主题	Materials Science, Multidisciplinary
语种	英语
ISSN号	0255-5476
WOS记录号	WOS:000299234300126
内容类型	会议论文
源URL	[http://dspace.imech.ac.cn/handle/311007/45243]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Yuan FP,Wu XL. Evolution of Adiabatic Shear Band in Ultra-Fine-Grained Iron under Dynamic Shear Loading[C]. 见:5th International Conference on Nanomaterials by Severe Plastic Deformation. Nanjing, PEOPLES R CHINA. MAR 21-25, 2011.http://dx.doi.org/10.4028/www.scientific.net/MSF.667-669.761.