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

被引：0
作者：
Xu, Yali [1 ,2 ,3 ]
Wu, Xiaofei [2 ]
Li, Shuaiqi [4 ]
Zhang, Jiamin [1 ]
Lu, Xiaoyang [2 ,3 ]
Zhang, Jinmin [2 ]
Li, Jinshan [1 ]
Lai, Minjie [1 ]
机构：
[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China
[2] Luoyang Ship Mat Res Inst, Luoyang 471023, Henan, Peoples R China
[3] Natl Key Lab Marine Corros & Protect, Luoyang 471023, Henan, Peoples R China
[4] Harbin Engn Univ, Yantai Res Inst, Yantai 264000, Shandong, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2025年 / 1019卷
关键词：
Titanium alloys; Stress corrosion cracking; Deformation; Microstructure; CYCLE FATIGUE BEHAVIOR; ALPHA-TITANIUM-ALLOY; PLASTIC-DEFORMATION; PURE TITANIUM; HYDROGEN EMBRITTLEMENT; MECHANICAL-PROPERTIES; TEXTURE EVOLUTION; CONTROLLED MODES; GROWTH-BEHAVIOR; PIPELINE STEELS;
D O I：
10.1016/j.jallcom.2025.179337
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
This study investigated the microstructural changes resulting from pre-strains ranging from 0 % to 13 % in a Ti6Al-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 beta 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 nonuniform deformation.
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页数：19
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