Abstract Friction stir welding (FSW) is conducted for 5052-H112 aluminum alloy. The stress-strain curves of joint and base metal (BM) in air and NaCl aqueous solution with different concentration were tested by using slow strain rate tension (SSRT) tester. The effects of chloride ions (Cl−) concentration on corrosion behaviors of joint and BM were also studied by using single cycle polarization and immersion measurements. Results showed that the BM is more susceptible to stress corrosion cracking (SCC) in NaCl aqueous solution with a high concentration. However, for the joint, this trend was opposite. The different trends may be caused by the formation of (001) and (110) texture components in the joint during the FSW operation.

中文翻译：

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搅拌摩擦焊5052-H112铝镁合金的应力腐蚀开裂行为

摘要 对5052-H112铝合金进行搅拌摩擦焊(FSW)。采用慢应变速率张力(SSRT)测试仪测试接头和母材(BM)在不同浓度的空气和NaCl水溶液中的应力-应变曲线。还通过使用单循环极化和浸没测量研究了氯离子 (Cl−) 浓度对接头和 BM 腐蚀行为的影响。结果表明，BM 在高浓度 NaCl 水溶液中更容易发生应力腐蚀开裂 (SCC)。然而，对于联合来说，这个趋势是相反的。不同的趋势可能是由于在 FSW 操作期间在接头中形成 (001) 和 (110) 纹理成分引起的。