Deformation, Phase Transformation and Recrystallization in the Shear Bands Induced by High-Strain Rate Loading in Titanium and its Alloys

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	Deformation, Phase Transformation and Recrystallization in the Shear Bands Induced by High-Strain Rate Loading in Titanium and its Alloys
	Xu YB(徐永波); Bai YL(白以龙); Meyers MA
刊名	Journal of Materials Science & Technology
	2006
通讯作者邮箱	ybxu@imr.ac.cn
卷号	22 期号:6 页码:737
ISSN号	1005-0302
通讯作者	Xu, YB (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.
中文摘要	alpha-titanium and its alloys with a dual-phase structure (alpha+beta) were deformed dynamically under strain rate of about 10(4) s(-1). The formation and microstructural evolution of the localized shear bands were characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results reveal that both the strain and strain rate should be considered simultaneously as the mechanical conditions for shear band formation, and twinning is an important mode of deformation. Both experimental and calculation show that the materials within the bands underwent a superhigh strain rate (9 x 10(5) s(-1)) deformation, which is two magnitudes of that of average strain rate required for shear band formation; the dislocations in the bands can be constricted and developed into cell structures; the phase transformation from alpha to alpha(2) within the bands was observed, and the transformation products (alpha(2)) had a certain crystallographic orientation relationship with their parent; the equiaxed grains with an average size of 10 mu m in diameter observed within the bands are proposed to be the results of recrystallization.
学科主题	力学
类目[WOS]	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
研究领域[WOS]	Materials Science ; Metallurgy & Metallurgical Engineering
关键词[WOS]	TRANSMISSION ELECTRON-MICROSCOPY ; ADIABATIC SHEAR ; DYNAMIC DEFORMATION ; PLASTIC-DEFORMATION ; TI-6AL-4V ALLOY ; 4340 STEEL ; LOCALIZATION ; MICROSTRUCTURE ; EVOLUTION ; INSTABILITY
收录类别	SCI
语种	英语
WOS记录号	WOS:000242638500002
公开日期	2007-06-15 ; 2007-12-05 ; 2009-06-23
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/15769]
专题	力学研究所_力学所知识产出(1956-2008)
推荐引用方式 GB/T 7714	Xu YB,Bai YL,Meyers MA. Deformation, Phase Transformation and Recrystallization in the Shear Bands Induced by High-Strain Rate Loading in Titanium and its Alloys[J]. Journal of Materials Science & Technology,2006,22(6):737.
APA	徐永波,白以龙,&Meyers MA.(2006).Deformation, Phase Transformation and Recrystallization in the Shear Bands Induced by High-Strain Rate Loading in Titanium and its Alloys.Journal of Materials Science & Technology,22(6),737.
MLA	徐永波,et al."Deformation, Phase Transformation and Recrystallization in the Shear Bands Induced by High-Strain Rate Loading in Titanium and its Alloys".Journal of Materials Science & Technology 22.6(2006):737.