Effect of hydrogen on the surface properties and cracking behavior of Ti-6Al-3Nb-2Zr-1Mo alloy welded joint

IF 7.4 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Corrosion Science Pub Date : 2025-02-28 DOI:10.1016/j.corsci.2025.112837
Changsheng Liu , Liwei Wang , Yuxue Wang , Huiyun Tian , Zhongyu Cui
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Abstract

The effect of hydrogen charging on the electrochemical behavior, surface properties, and the cracking processes of Ti-6Al-3Nb-2Zr-1Mo (Ti80) alloy base metal and welded joint is investigated. Hydrogen promotes the deterioration of the Ti80 including the destruction of the passive film, formation of the hydrides, initiation of the cracks, and decrease of the mechanical properties. The weld metal show much higher susceptibility to hydrogen because of the finer grains with lamellar structure. Hydrogen embrittlement mechanism differs from the hydrogen introducing approach. The hydrides, internal hydrogen, and hydrogen-stress interaction play different roles in the hydrogen damage process of the Ti80 alloy.
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氢对Ti-6Al-3Nb-2Zr-1Mo合金焊接接头表面性能及开裂行为的影响
研究了充氢对Ti-6Al-3Nb-2Zr-1Mo (Ti80)合金母材和焊接接头的电化学行为、表面性能和开裂过程的影响。氢促进了Ti80的劣化,包括钝化膜的破坏、氢化物的形成、裂纹的萌生和力学性能的降低。焊缝金属具有较细的片层结构,对氢的敏感性较高。氢脆机理不同于引入氢的方法。氢化物、内部氢和氢-应力相互作用在Ti80合金氢损伤过程中发挥着不同的作用。
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来源期刊
Corrosion Science
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.
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