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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.
Source PublicationMATERIALS & DESIGN
2013-04
Volume46Pages:38-48
ISSN0261-3069
AbstractIsothermal 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.
KeywordDeformation Mechanism Recrystallization Mechanism Microstructure Globularization Electron Backscatter Diffraction Titanium Alloys
Subject Area固体力学
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000314870000005
Funding OrganizationChina Scholarship Council (CSC)
Department非线性力学国家重点实验室
Classification二类/Q1
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/47114
Collection非线性力学国家重点实验室
Corresponding AuthorZhu, JC (reprint author), Harbin Inst Technol, Natl Key Lab Precis Hot Proc Met, Harbin 150001, Peoples R China.
Recommended Citation
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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