Effect of pre-deformation on microstructure evolution and the stress corrosion cracking behavior of Ti-6Al-3Nb-2Zr-1Mo alloy in simulated seawater

Yali Xu; Xiaofei Wu; Shuaiqi Li; Jiamin Zhang; Xiaoyang Lu; Jinmin Zhang; Jinshan Li; Minjie Lai

doi:10.1016/j.jallcom.2025.179337

Effect of pre-deformation on microstructure evolution and the stress corrosion cracking behavior of Ti-6Al-3Nb-2Zr-1Mo alloy in simulated seawater

Yali Xu, Xiaofei Wu, Shuaiqi Li, Jiamin Zhang, Xiaoyang Lu, Jinmin Zhang, Jinshan Li, Minjie Lai

School of Materials Sience and Engineering

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

Abstract

This study investigated the microstructural changes resulting from pre-strains ranging from 0 % to 13 % in a Ti-6Al-3Nb-2Zr-1Mo alloy and their effects on corrosion and stress corrosion cracking (SCC) behaviors in simulated seawater. The dislocation density increased gradually during uniform deformation (pre-strain <7 %) and significantly during non-uniform deformation. Besides, dislocation cells, sub-grain boundaries, kinking of β phase, and deformation twins were activated or strengthened in the subsequent slow strain rate deformation process. Pre-deformation led to increased strength and decreased ductility. Corrosion resistance decreased with increasing pre-strain. The SCC sensitivity was absent upon uniform deformation, whereas it increased upon non-uniform deformation.

Original language	English
Article number	179337
Journal	Journal of Alloys and Compounds
Volume	1019
DOIs	https://doi.org/10.1016/j.jallcom.2025.179337
State	Published - 10 Mar 2025

Keywords

Deformation
Microstructure
Stress corrosion cracking
Titanium alloys

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10.1016/j.jallcom.2025.179337

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title = "Effect of pre-deformation on microstructure evolution and the stress corrosion cracking behavior of Ti-6Al-3Nb-2Zr-1Mo alloy in simulated seawater",

abstract = "This study investigated the microstructural changes resulting from pre-strains ranging from 0 % to 13 % in a Ti-6Al-3Nb-2Zr-1Mo alloy and their effects on corrosion and stress corrosion cracking (SCC) behaviors in simulated seawater. The dislocation density increased gradually during uniform deformation (pre-strain <7 %) and significantly during non-uniform deformation. Besides, dislocation cells, sub-grain boundaries, kinking of β phase, and deformation twins were activated or strengthened in the subsequent slow strain rate deformation process. Pre-deformation led to increased strength and decreased ductility. Corrosion resistance decreased with increasing pre-strain. The SCC sensitivity was absent upon uniform deformation, whereas it increased upon non-uniform deformation.",

keywords = "Deformation, Microstructure, Stress corrosion cracking, Titanium alloys",

author = "Yali Xu and Xiaofei Wu and Shuaiqi Li and Jiamin Zhang and Xiaoyang Lu and Jinmin Zhang and Jinshan Li and Minjie Lai",

note = "Publisher Copyright: {\textcopyright} 2025 Elsevier B.V.",

year = "2025",

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day = "10",

doi = "10.1016/j.jallcom.2025.179337",

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TY - JOUR

T1 - Effect of pre-deformation on microstructure evolution and the stress corrosion cracking behavior of Ti-6Al-3Nb-2Zr-1Mo alloy in simulated seawater

AU - Xu, Yali

AU - Wu, Xiaofei

AU - Li, Shuaiqi

AU - Zhang, Jiamin

AU - Lu, Xiaoyang

AU - Zhang, Jinmin

AU - Li, Jinshan

AU - Lai, Minjie

PY - 2025/3/10

Y1 - 2025/3/10

N2 - This study investigated the microstructural changes resulting from pre-strains ranging from 0 % to 13 % in a Ti-6Al-3Nb-2Zr-1Mo alloy and their effects on corrosion and stress corrosion cracking (SCC) behaviors in simulated seawater. The dislocation density increased gradually during uniform deformation (pre-strain <7 %) and significantly during non-uniform deformation. Besides, dislocation cells, sub-grain boundaries, kinking of β phase, and deformation twins were activated or strengthened in the subsequent slow strain rate deformation process. Pre-deformation led to increased strength and decreased ductility. Corrosion resistance decreased with increasing pre-strain. The SCC sensitivity was absent upon uniform deformation, whereas it increased upon non-uniform deformation.

AB - This study investigated the microstructural changes resulting from pre-strains ranging from 0 % to 13 % in a Ti-6Al-3Nb-2Zr-1Mo alloy and their effects on corrosion and stress corrosion cracking (SCC) behaviors in simulated seawater. The dislocation density increased gradually during uniform deformation (pre-strain <7 %) and significantly during non-uniform deformation. Besides, dislocation cells, sub-grain boundaries, kinking of β phase, and deformation twins were activated or strengthened in the subsequent slow strain rate deformation process. Pre-deformation led to increased strength and decreased ductility. Corrosion resistance decreased with increasing pre-strain. The SCC sensitivity was absent upon uniform deformation, whereas it increased upon non-uniform deformation.

KW - Deformation

KW - Microstructure

KW - Stress corrosion cracking

KW - Titanium alloys

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U2 - 10.1016/j.jallcom.2025.179337

DO - 10.1016/j.jallcom.2025.179337

M3 - 文章

AN - SCOPUS:85218355303

SN - 0925-8388

VL - 1019

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

M1 - 179337

ER -

Effect of pre-deformation on microstructure evolution and the stress corrosion cracking behavior of Ti-6Al-3Nb-2Zr-1Mo alloy in simulated seawater

Abstract

Keywords

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