TC4钛合金在模拟深海环境中的应力腐蚀开裂敏感性及扩展行为

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2025-07-19 DOI:10.1016/j.corsci.2025.113201

Li Li , Zimin Li , Bright O. Okonkwo , Wanqing You , Zhiming Zhang , Lingzhi Zhang , Jianqiu Wang , En-Hou Han

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引用次数: 0

摘要

本研究研究了应力强度因子（KI）、溶解氧（DO）和静水压力（HP）对商用TC4钛合金在模拟海洋环境下（包括浅海和深海环境）应力腐蚀开裂（SCC）行为的影响。实验结果表明，在特定晶界处，穿晶SCC和少量沿晶SCC主导了裂纹扩展模式。较高的KI和DO浓度加速SCC生长速率（SCCGRs），而HP则增强腐蚀反应和氢脆。讨论了SCC裂纹在不同阶段的扩展机理。

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Stress corrosion cracking susceptibility and propagation behavior of TC4 titanium alloy in simulated deep-sea environment

This study investigated the effect of stress intensity factors (K_I), dissolved oxygen (DO), and hydrostatic pressure (HP) on the stress corrosion cracking (SCC) behavior of commercial TC4 titanium alloy in the simulated marine environment, including both shallow-sea and deep-sea conditions. Experimental results revealed that transgranular SCC and a few intergranular SCC at specific grain boundaries dominated the crack propagation mode. Higher K_I and DO concentrations accelerate SCC growth rates (SCCGRs), while HP enhances corrosion reactions and hydrogen embrittlement. The mechanisms of the SCC crack propagation in different phases were discussed.

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来源期刊

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.