搅拌摩擦焊对 AA2060 T8E30 和 AA2099 T83 Al-Li 合金局部腐蚀行为的影响

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Corrosion Science Pub Date : 2024-10-19 DOI:10.1016/j.corsci.2024.112519

Vishant Garg, Joost P.B. van Dam, Emmanouela Michailidou, Yaiza Gonzalez-Garcia

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引用次数: 0

摘要

本研究探讨了搅拌摩擦焊（FSW）对 AA2099 T83 和 AA2060 T8E30 异种合金焊缝的微观结构和局部腐蚀行为的影响。FSW 导致微观结构发生剧烈变化，从而改变了它们的腐蚀行为。热影响区呈现出与各自基体金属相似的侵蚀形态，但却是受保护最严重的区域。搅拌区（SZ）最容易受到侵蚀。在整个焊缝的浸泡过程中，由于焊接区晶粒的重叠导致区域内的电偶活动，攻击从 AA2060 SZ 开始。

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Influence of friction stir welding on the localised corrosion behaviour of AA2060 T8E30 and AA2099 T83 Al-Li alloys

The effect of friction stir welding (FSW) on the microstructure and localised corrosion behaviour of the dissimilar weld of AA2099 T83 and AA2060 T8E30 alloys is investigated. FSW results in a drastic change in the microstructure thus altering their corrosion behaviour. The heat-affected region exhibits similar attack morphology to their respective base metal but is the most protected region. The stir zone (SZ) is the most susceptible to attack. During immersion of the entire weld, attack initiation occurs from the AA2060 SZ due to galvanic activity within the region caused by the overlap of the grains in the weld zone.

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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.