Superplastic Deformation Mechanism and Simultaneous Microstructure Evolution of Fine-grained Ti-6Al-4V Wide Sheet

Xuehua Zhang; Yongqing Zhao; Weidong Zeng

Superplastic Deformation Mechanism and Simultaneous Microstructure Evolution of Fine-grained Ti-6Al-4V Wide Sheet

Xuehua Zhang
, Yongqing Zhao
, Weidong Zeng

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian
Western Metal Materials Co., Ltd.
Northwest Institute for Nonferrous Metal Research

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

The superplasticity of fine-grained Ti-6Al-4V wide sheet was investigated by constant strain rate tensile method. The superplastic tensile tests were carried out at temperatures ranging from 1103 K to 1223 K and strain rates ranging from 3.2×10^-4 s^-1 to 1×10^-2 s^-1. The results show that tensile elongation to failure values between 100% and 604% are obtained. Microstructure evolution and deformation mechanism were analyzed. Results show that the main deformation mechanism is grain boundary sliding, accommodated by matrix dislocation movement and the intragranular slip of β phase. It is also found that the Ti-6Al-4V wide sheet shows anisotropy when deformed at lower temperatures, which is obviously reduced when deformed at higher temperatures.

Translated title of the contribution	细晶Ti-6Al-4V宽幅板材的超塑性变形机理及组织演变
Original language	English
Pages (from-to)	391-397
Number of pages	7
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	49
Issue number	2
State	Published - 1 Feb 2020

Keywords

Anisotropy
Deformation mechanism
Superplasticity
Ti-6Al-4V wide sheet

Cite this

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title = "Superplastic Deformation Mechanism and Simultaneous Microstructure Evolution of Fine-grained Ti-6Al-4V Wide Sheet",

abstract = "The superplasticity of fine-grained Ti-6Al-4V wide sheet was investigated by constant strain rate tensile method. The superplastic tensile tests were carried out at temperatures ranging from 1103 K to 1223 K and strain rates ranging from 3.2×10-4 s-1 to 1×10-2 s-1. The results show that tensile elongation to failure values between 100\% and 604\% are obtained. Microstructure evolution and deformation mechanism were analyzed. Results show that the main deformation mechanism is grain boundary sliding, accommodated by matrix dislocation movement and the intragranular slip of β phase. It is also found that the Ti-6Al-4V wide sheet shows anisotropy when deformed at lower temperatures, which is obviously reduced when deformed at higher temperatures.",

keywords = "Anisotropy, Deformation mechanism, Superplasticity, Ti-6Al-4V wide sheet",

author = "Xuehua Zhang and Yongqing Zhao and Weidong Zeng",

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T1 - Superplastic Deformation Mechanism and Simultaneous Microstructure Evolution of Fine-grained Ti-6Al-4V Wide Sheet

AU - Zhang, Xuehua

AU - Zhao, Yongqing

AU - Zeng, Weidong

PY - 2020/2/1

Y1 - 2020/2/1

N2 - The superplasticity of fine-grained Ti-6Al-4V wide sheet was investigated by constant strain rate tensile method. The superplastic tensile tests were carried out at temperatures ranging from 1103 K to 1223 K and strain rates ranging from 3.2×10-4 s-1 to 1×10-2 s-1. The results show that tensile elongation to failure values between 100% and 604% are obtained. Microstructure evolution and deformation mechanism were analyzed. Results show that the main deformation mechanism is grain boundary sliding, accommodated by matrix dislocation movement and the intragranular slip of β phase. It is also found that the Ti-6Al-4V wide sheet shows anisotropy when deformed at lower temperatures, which is obviously reduced when deformed at higher temperatures.

AB - The superplasticity of fine-grained Ti-6Al-4V wide sheet was investigated by constant strain rate tensile method. The superplastic tensile tests were carried out at temperatures ranging from 1103 K to 1223 K and strain rates ranging from 3.2×10-4 s-1 to 1×10-2 s-1. The results show that tensile elongation to failure values between 100% and 604% are obtained. Microstructure evolution and deformation mechanism were analyzed. Results show that the main deformation mechanism is grain boundary sliding, accommodated by matrix dislocation movement and the intragranular slip of β phase. It is also found that the Ti-6Al-4V wide sheet shows anisotropy when deformed at lower temperatures, which is obviously reduced when deformed at higher temperatures.

KW - Anisotropy

KW - Deformation mechanism

KW - Superplasticity

KW - Ti-6Al-4V wide sheet

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M3 - 文章

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SN - 1002-185X

VL - 49

SP - 391

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JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

IS - 2

ER -

Superplastic Deformation Mechanism and Simultaneous Microstructure Evolution of Fine-grained Ti-6Al-4V Wide Sheet

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Keywords

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