An experimental study of deformation mechanism and microstructure evolution during hot deformation of Ti-6Al-2Zr-1Mo-1V alloy

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	An experimental study of deformation mechanism and microstructure evolution during hot deformation of Ti-6Al-2Zr-1Mo-1V alloy
	He D(何东); Zhu JC; Lai ZH; Liu Y; Yang XW
刊名	MATERIALS & DESIGN
	2013-04
通讯作者邮箱	fgms@hit.edu.cn
卷号	46 页码:38-48
关键词	Deformation mechanism Recrystallization mechanism Microstructure globularization Electron backscatter diffraction Titanium alloys
ISSN号	0261-3069
通讯作者	Zhu, JC (reprint author), Harbin Inst Technol, Natl Key Lab Precis Hot Proc Met, Harbin 150001, Peoples R China.
产权排序	[He, D.; Zhu, J. C.; Lai, Z. H.; Liu, Y.; Yang, X. W.] Harbin Inst Technol, Natl Key Lab Precis Hot Proc Met, Harbin 150001, Peoples R China; [He, D.] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
合作状况	国内
中文摘要	Isothermal tensile tests have been performed to study the deformation mechanisms and microstructure evolution of Ti-6Al-2Zr-1Mo-1V titanium alloy in the temperature range 750-850 degrees C and strain rate range 0.001-0.1 s(-1). The deformation activations have been calculated based on kinetics rate equation to investigate the hot deformation mechanism. Microstructures of deformed samples have been analyzed by electron backscatter diffraction (EBSD) to evaluate the influences of hot deformation parameters on the microstructure evolution and recrystallization mechanism. The results indicate that deformation mechanisms vary with deformation conditions: at medium (800 degrees C) and high (850 degrees C) temperature, the deformation is mainly controlled by the mechanisms of dislocation creep and self-diffusion, respectively. The microstructure globularization mechanisms also depend on deformation temperature: in the temperature range from 750 to 800 degrees C, the high angle grain boundaries are mainly formed via dislocation accumulation or subgrain boundaries sliding and subgrains rotation; while at high temperature of 850 degrees C, recrystallization is the dominant mechanism. Especially, the evolution of the recrystallization mechanism with the deformation temperature is first observed and investigated in TA15 titanium alloy.
学科主题	固体力学
分类号	二类/Q1
收录类别	SCI ; EI
资助信息	China Scholarship Council (CSC)
原文出处	http://dx.doi.org/10.1016/j.matdes.2012.09.045
语种	英语
WOS记录号	WOS:000314870000005
公开日期	2013-03-25
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/47114]
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	He D,Zhu JC,Lai ZH,et al. An experimental study of deformation mechanism and microstructure evolution during hot deformation of Ti-6Al-2Zr-1Mo-1V alloy[J]. MATERIALS & DESIGN,2013,46:38-48.
APA	He D,Zhu JC,Lai ZH,Liu Y,&Yang XW.(2013).An experimental study of deformation mechanism and microstructure evolution during hot deformation of Ti-6Al-2Zr-1Mo-1V alloy.MATERIALS & DESIGN,46,38-48.
MLA	He D,et al."An experimental study of deformation mechanism and microstructure evolution during hot deformation of Ti-6Al-2Zr-1Mo-1V alloy".MATERIALS & DESIGN 46(2013):38-48.