Role of nanosized intermediate phases on α precipitation in a high-strength near β titanium alloy

Bo Song; Wenlong Xiao; Yu Fu; Chaoli Ma; Lian Zhou

doi:10.1016/j.matlet.2020.128147

Role of nanosized intermediate phases on α precipitation in a high-strength near β titanium alloy

Bo Song, Wenlong Xiao, Yu Fu, Chaoli Ma, Lian Zhou

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

14 Scopus citations

Abstract

Two types of intermediate phases, O′ and ω, were observed in a β-solutionized Ti-5Al-3Mo-3V-2Cr-2Zr-1Nb-1Fe alloy depending on the cooling rate. During heating the as-solutionized sample to aging temperature, the isothermal ω precipitated from β, but then decomposed before α precipitation. While the O′ was continuously formed and eventually assisted α precipitation. The air cooling sample had a greater amount of O′ domains, therefore produced finer microstructure and higher strength in the aged sample.

Original language	English
Article number	128147
Journal	Materials Letters
Volume	275
DOIs	https://doi.org/10.1016/j.matlet.2020.128147
State	Published - 15 Sep 2020
Externally published	Yes

Keywords

Cooling rate
Intermediate phase
Microstructure
Phase transformation
Titanium alloy

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10.1016/j.matlet.2020.128147

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title = "Role of nanosized intermediate phases on α precipitation in a high-strength near β titanium alloy",

abstract = "Two types of intermediate phases, O′ and ω, were observed in a β-solutionized Ti-5Al-3Mo-3V-2Cr-2Zr-1Nb-1Fe alloy depending on the cooling rate. During heating the as-solutionized sample to aging temperature, the isothermal ω precipitated from β, but then decomposed before α precipitation. While the O′ was continuously formed and eventually assisted α precipitation. The air cooling sample had a greater amount of O′ domains, therefore produced finer microstructure and higher strength in the aged sample.",

keywords = "Cooling rate, Intermediate phase, Microstructure, Phase transformation, Titanium alloy",

author = "Bo Song and Wenlong Xiao and Yu Fu and Chaoli Ma and Lian Zhou",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2020",

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doi = "10.1016/j.matlet.2020.128147",

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T1 - Role of nanosized intermediate phases on α precipitation in a high-strength near β titanium alloy

AU - Song, Bo

AU - Xiao, Wenlong

AU - Fu, Yu

AU - Ma, Chaoli

AU - Zhou, Lian

PY - 2020/9/15

Y1 - 2020/9/15

N2 - Two types of intermediate phases, O′ and ω, were observed in a β-solutionized Ti-5Al-3Mo-3V-2Cr-2Zr-1Nb-1Fe alloy depending on the cooling rate. During heating the as-solutionized sample to aging temperature, the isothermal ω precipitated from β, but then decomposed before α precipitation. While the O′ was continuously formed and eventually assisted α precipitation. The air cooling sample had a greater amount of O′ domains, therefore produced finer microstructure and higher strength in the aged sample.

AB - Two types of intermediate phases, O′ and ω, were observed in a β-solutionized Ti-5Al-3Mo-3V-2Cr-2Zr-1Nb-1Fe alloy depending on the cooling rate. During heating the as-solutionized sample to aging temperature, the isothermal ω precipitated from β, but then decomposed before α precipitation. While the O′ was continuously formed and eventually assisted α precipitation. The air cooling sample had a greater amount of O′ domains, therefore produced finer microstructure and higher strength in the aged sample.

KW - Cooling rate

KW - Intermediate phase

KW - Microstructure

KW - Phase transformation

KW - Titanium alloy

UR - http://www.scopus.com/inward/record.url?scp=85086829818&partnerID=8YFLogxK

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DO - 10.1016/j.matlet.2020.128147

M3 - 文章

AN - SCOPUS:85086829818

SN - 0167-577X

VL - 275

JO - Materials Letters

JF - Materials Letters

M1 - 128147

ER -

Role of nanosized intermediate phases on α precipitation in a high-strength near β titanium alloy

Abstract

Keywords

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