Research progress on the service behavior and failure mechanism of Ti alloys under deep-sea environment
ZHANG jiaqi1, XIAO Jiaheng1, PENG Yuqi1, ZHANG Junhua1, WAN Yixin1, LIU Xiaotao1,2
1. School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; 2. Shenzhen Research Institute of Huazhong University of Science and Technology, Shenzhen 518057, China
Abstract：With the continuous advancement of human exploration and exploitation of deep-sea resources, deep-sea equipment imposes increasingly higher requirements on the corrosion resistance of materials. Titanium alloys, renowned for their high strength, light weight, and excellent corrosion resistance, are hailed as the “marine metal” and have become a key material for deep-sea equipment. However, the deep-sea environment is characterized by high pressure, low temperature, low oxygen levels, high salinity, and a complex microbial system. The coupling effects of these factors can significantly influence the corrosion behavior of titanium alloys, potentially leading to localized corrosion, hydrogen embrittlement, and other issues. This paper systematically reviews the progress in corrosion research on titanium alloys in deep-sea environment, in which the attention is particularly paid to research methods of indoor acceleration simulation experiment, the influence factor and the associated mechanisms of typical corrosion forms, e.g., microbial corrosion, stress corrosion, and corrosion fatigue, are summarized. And the future development direction of deep-sea titanium alloys is proposed.
张嘉琪, 肖嘉恒, 彭玉琪, 张峻华, 万一新, 刘小涛. 钛合金深海服役行为与失效机理研究进展[J]. 粉末冶金材料科学与工程, 2026, 31(5): 439-454.
ZHANG jiaqi, XIAO Jiaheng, PENG Yuqi, ZHANG Junhua, WAN Yixin, LIU Xiaotao. Research progress on the service behavior and failure mechanism of Ti alloys under deep-sea environment[J]. Materials Science and Engineering of Powder Metallurgy, 2026, 31(5): 439-454.
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