通过搅拌摩擦焊量化 AA2098-T351 焊件的晶间腐蚀敏感性

IF 1.6 4区 材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials and Corrosion-werkstoffe Und Korrosion Pub Date : 2024-06-10 DOI:10.1002/maco.202314245
Mariana X. Milagre, Uyime Donatus, Naga V. Mogili, Caruline S. C. Machado, João Victor. S. Araujo, Rejane Maria P. Silva, Renato A. Antunes, Sajid Farooq, Isolda Costa
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引用次数: 0

摘要

本研究系统地评估了通过搅拌摩擦焊(FSW)制造的 AA2098-T351 焊缝的晶间腐蚀(IGC)敏感性。评估采用了美国材料与试验协会 (ASTM) G110-92 标准和电化学阻抗测量方法,并与未焊接合金 (BS) 进行了对比分析。主要研究结果表明,FSW 引起的微观结构变化对不同区域的 IGC 易感性有显著影响。与基体金属(BM)相比,受 FSW 影响的区域呈现出不同的易感性。ASTM G110-92 试验根据焊接温度梯度有效地将热影响区(HAZ)区分为耐腐蚀性能不断变化的区段。使用扫描电子显微镜(SEM)技术进行的横截面分析将腐蚀特征与透射电子显微镜(TEM)确定的微观结构特征相关联。总之,FSW 引起的微观结构变化是影响不同区域对 IGC 的不同敏感性的主要因素,电化学阻抗测量 (EIS) 验证了 ASTM G110-92 实践的结论。
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Quantifying intergranular corrosion susceptibility in AA2098-T351 weldments through friction stir welding

In this study, the intergranular corrosion (IGC) susceptibility of AA2098-T351 welds, fabricated through friction stir welding (FSW), was systematically evaluated. The evaluation employed American Society for Testing and Materials (ASTM) G110-92 practice and electrochemical impedance measurements, with comparative analyses against unwelded alloys (BS). The key findings depicted that FSW-induced microstructure changes significantly influenced IGC susceptibility across different zones. Zones affected by FSW presented distinct susceptibilities compared with the base metal (BM). The ASTM G110-92 test effectively differentiated the heat-affected zone (HAZ) into segments with changing corrosion resistances based on welding temperature gradients. Cross-sectional analyses using scanning electron microscopy (SEM) techniques correlated corrosion characteristics with microstructural features identified by transmission electron microscopy (TEM). Overall, FSW-induced microstructural alterations emerged as a predominant factor influencing the varying susceptibilities of different zones to IGC, and electrochemical impedance measurements (EIS) validated the findings from ASTM G110-92 practice.

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来源期刊
Materials and Corrosion-werkstoffe Und Korrosion
Materials and Corrosion-werkstoffe Und Korrosion 工程技术-材料科学:综合
CiteScore
3.70
自引率
11.10%
发文量
199
审稿时长
1.4 months
期刊介绍: Materials and Corrosion is the leading European journal in its field, providing rapid and comprehensive coverage of the subject and specifically highlighting the increasing importance of corrosion research and prevention. Several sections exclusive to Materials and Corrosion bring you closer to the current events in the field of corrosion research and add to the impact this journal can make on your work.
期刊最新文献
Calendar of Events Cover Picture: Materials and Corrosion. 11/2024 Masthead: Materials and Corrosion. 11/2024 Contents: Materials and Corrosion. 11/2024 Calendar of Events
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