Investigation on corrosion tendency behaviour of TA2 titanium alloy welded joints under flow scouring conditions using the array electrode method

IF 2.3 4区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING Anti-corrosion Methods and Materials Pub Date : 2023-08-29 DOI:10.1108/acmm-04-2023-2782

Yingshuang Liu, Ran Liu, Dalei Zhang, Shaohua Xing, Xiaohui Dou, Xinwei Zhang, Zonghao He

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Abstract

Purpose The corrosion behaviour of titanium alloy surface when fluid with different flow rates flows through welded joints with different residual heights was explored. Design/methodology/approach The experiment uses a combination of array electrodes and simulation. Findings It is found that when the weld reinforcement exists, the corrosion tendency of both ends of the weld metal is greater than that of other parts of the welded joint due to the influence of high turbulence kinetic energy and shear stress. The presence of weld reinforcement heights makes the fluid behind it fluctuate greatly. The passivation films of both the base metal (BM) at the rear and the heat-affected zone (HAZ) are more prone to corrosion than those of the front BM and HAZ, and the passivation film is rougher. Originality/value The combination of test and simulation was used to explore the influence of electrochemical and hydrodynamic factors on the corrosion behaviour of titanium alloy-welded joints when welding residual height existed.

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阵列电极法研究TA2钛合金焊接接头在流动冲刷条件下的腐蚀倾向

目的研究不同流速流体通过不同残余高度焊接接头时钛合金表面的腐蚀行为。设计/方法/方法本实验采用阵列电极和模拟相结合的方法。结果发现，当焊缝钢筋存在时，由于高湍流动能和剪切应力的影响，焊缝金属两端的腐蚀倾向大于焊接接头的其他部位。焊缝钢筋高度的存在使其后面的流体波动较大。后端和热影响区(HAZ)母材的钝化膜比前端和热影响区(HAZ)的钝化膜更容易腐蚀，且钝化膜更粗糙。采用试验与仿真相结合的方法，探讨了存在焊接残余高度时，电化学和水动力因素对钛合金焊接接头腐蚀行为的影响。

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来源期刊

Anti-corrosion Methods and Materials 工程技术-冶金工程

CiteScore

2.80

自引率

16.70%

发文量

审稿时长

13.5 months

期刊介绍： Anti-Corrosion Methods and Materials publishes a broad coverage of the materials and techniques employed in corrosion prevention. Coverage is essentially of a practical nature and designed to be of material benefit to those working in the field. Proven applications are covered together with company news and new product information. Anti-Corrosion Methods and Materials now also includes research articles that reflect the most interesting and strategically important research and development activities from around the world. Every year, industry pays a massive and rising cost for its corrosion problems. Research and development into new materials, processes and initiatives to combat this loss is increasing, and new findings are constantly coming to light which can help to beat corrosion problems throughout industry. This journal uniquely focuses on these exciting developments to make essential reading for anyone aiming to regain profits lost through corrosion difficulties. • New methods, materials and software • New developments in research and industry • Stainless steels • Protection of structural steelwork • Industry update, conference news, dates and events • Environmental issues • Health & safety, including EC regulations • Corrosion monitoring and plant health assessment • The latest equipment and processes • Corrosion cost and corrosion risk management.