2xxx系铝合金第二相对搅拌摩擦焊接头腐蚀行为的影响
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钟嘉欣, 关蕾, 李雨, 黄家勇, 石磊
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Effect of Second Phase on Corrosion Behavior of Friction-stir-welded Joints of 2xxx Series Al-alloy
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ZHONG Jiaxin, GUAN Lei, LI Yu, HUANG Jiayong, SHI Lei
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表2 2xxx系铝合金搅拌摩擦焊接头腐蚀行为总结
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Table 2 Summary of corrosion behaviour of FSWed joints of 2xxx series aluminum alloy
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| Al-alloy | Corrosion type | Corrosion area | Corrosion inducing source | Reference |
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| 2024 | Pitting | NZ | Uniformly distributed fine S phase | [27] | | 2060-T8 | Intergranular corrosion | NZ&TMAZ HAZ | The Cu rich phase at grain boundary | [29, 30] | | 2024-T351 | Pitting | HAZ, located near to the TMAZ | The coarse S phase in the grain | [14, 31~33] | | Intergranular corrosion | | The continuous S phase at grain boundary | | | 2098-T351， 2050-T3 | Exfoliation & intergranular corrosion | HAZ | T1 phase at grain boundary、 sub-grain boundary | [34, 35] | | 2014，2198-T851，2219 | Corrosion resistance is better than the base metal | Dissolution of Al2Cu/T1 phase | [36~39] |
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