Stress relaxation induced morphological evolution and texture weakening of α phase in Ti-6Al-4V alloy

Z. H. Wu; H. C. Kou; B. Tang; J. K. Fan; Y. Chen; J. S. Li

doi:10.1016/j.matlet.2018.10.113

Stress relaxation induced morphological evolution and texture weakening of α phase in Ti-6Al-4V alloy

Z. H. Wu, H. C. Kou, B. Tang, J. K. Fan, Y. Chen, J. S. Li

School of Materials Sience and Engineering

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

9 Scopus citations

Abstract

A uniform, fine-grained microstructure is attained by stress relaxation (SRT) method in Ti-6Al-4V alloy subsequent to hot compression (HC) executed at the temperature of 900 °C and a strain rate of 10⁻³ s⁻¹ to a 50% height reduction. The pronounced SRT-induced α grain spheroidization and texture weakening is proposed. It is found that the spheroidization of the initial coarse forging state microstructure is obvious, and texture has weakened substantially after HC/SRT. In addition, the crystal structure of α phase is closer to the ideal crystal structure of α-Ti after SRT. The HC/SRT process is mainly governed by continuous dynamic recrystallization and dynamic/static spheroidization.

Original language	English
Pages (from-to)	148-151
Number of pages	4
Journal	Materials Letters
Volume	236
DOIs	https://doi.org/10.1016/j.matlet.2018.10.113
State	Published - 1 Feb 2019

Keywords

Microstructure
Stress relaxation
Texture
Titanium alloys

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10.1016/j.matlet.2018.10.113

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title = "Stress relaxation induced morphological evolution and texture weakening of α phase in Ti-6Al-4V alloy",

abstract = "A uniform, fine-grained microstructure is attained by stress relaxation (SRT) method in Ti-6Al-4V alloy subsequent to hot compression (HC) executed at the temperature of 900 °C and a strain rate of 10−3 s−1 to a 50% height reduction. The pronounced SRT-induced α grain spheroidization and texture weakening is proposed. It is found that the spheroidization of the initial coarse forging state microstructure is obvious, and texture has weakened substantially after HC/SRT. In addition, the crystal structure of α phase is closer to the ideal crystal structure of α-Ti after SRT. The HC/SRT process is mainly governed by continuous dynamic recrystallization and dynamic/static spheroidization.",

keywords = "Microstructure, Stress relaxation, Texture, Titanium alloys",

author = "Wu, {Z. H.} and Kou, {H. C.} and B. Tang and Fan, {J. K.} and Y. Chen and Li, {J. S.}",

note = "Publisher Copyright: {\textcopyright} 2018",

year = "2019",

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doi = "10.1016/j.matlet.2018.10.113",

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journal = "Materials Letters",

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TY - JOUR

T1 - Stress relaxation induced morphological evolution and texture weakening of α phase in Ti-6Al-4V alloy

AU - Wu, Z. H.

AU - Kou, H. C.

AU - Tang, B.

AU - Fan, J. K.

AU - Chen, Y.

AU - Li, J. S.

PY - 2019/2/1

Y1 - 2019/2/1

N2 - A uniform, fine-grained microstructure is attained by stress relaxation (SRT) method in Ti-6Al-4V alloy subsequent to hot compression (HC) executed at the temperature of 900 °C and a strain rate of 10−3 s−1 to a 50% height reduction. The pronounced SRT-induced α grain spheroidization and texture weakening is proposed. It is found that the spheroidization of the initial coarse forging state microstructure is obvious, and texture has weakened substantially after HC/SRT. In addition, the crystal structure of α phase is closer to the ideal crystal structure of α-Ti after SRT. The HC/SRT process is mainly governed by continuous dynamic recrystallization and dynamic/static spheroidization.

AB - A uniform, fine-grained microstructure is attained by stress relaxation (SRT) method in Ti-6Al-4V alloy subsequent to hot compression (HC) executed at the temperature of 900 °C and a strain rate of 10−3 s−1 to a 50% height reduction. The pronounced SRT-induced α grain spheroidization and texture weakening is proposed. It is found that the spheroidization of the initial coarse forging state microstructure is obvious, and texture has weakened substantially after HC/SRT. In addition, the crystal structure of α phase is closer to the ideal crystal structure of α-Ti after SRT. The HC/SRT process is mainly governed by continuous dynamic recrystallization and dynamic/static spheroidization.

KW - Microstructure

KW - Stress relaxation

KW - Texture

KW - Titanium alloys

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U2 - 10.1016/j.matlet.2018.10.113

DO - 10.1016/j.matlet.2018.10.113

M3 - 文章

AN - SCOPUS:85055133939

SN - 0167-577X

VL - 236

SP - 148

EP - 151

JO - Materials Letters

JF - Materials Letters

ER -

Stress relaxation induced morphological evolution and texture weakening of α phase in Ti-6Al-4V alloy

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Keywords

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