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; Zhu, JC (reprint author), Harbin Inst Technol, Natl Key Lab Precis Hot Proc Met, Harbin 150001, Peoples R China.
发表期刊	MATERIALS & DESIGN
	2013-04
卷号	46 页码:38-48
ISSN	0261-3069
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.
关键词	Deformation Mechanism Recrystallization Mechanism Microstructure Globularization Electron Backscatter Diffraction Titanium Alloys
学科领域	固体力学
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000314870000005
项目资助者	China Scholarship Council (CSC)
课题组名称	非线性力学国家重点实验室
论文分区	二类/Q1
引用统计	被引频次：95[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/47114
专题	非线性力学国家重点实验室
通讯作者	Zhu, JC (reprint author), Harbin Inst Technol, Natl Key Lab Precis Hot Proc Met, Harbin 150001, Peoples R China.
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,&Zhu, JC .(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.

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