| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7895537 | Corrosion Science | 2015 | 52 Pages |
Abstract
Corrosion behaviour, residual stress, intermetallics and microstructure of friction stir welded aerospace Al-Zn-Mg and Al-Zn-Mg-0.10Sc-0.10Zr (wt.%) alloys were investigated comparatively and in detail. The thermo-mechanically affected zones adjacent to weld nugget are most susceptible to corrosion in two weld joints. In addition to the enrichment of coarse Si and Fe intermetallics, wide precipitate free zones (in Al-Zn-Mg weld joint) and high tensile residual stress are the key factors. Secondary Al3ScxZr1âx nanoparticles can effectively improve stress corrosion cracking resistance and decrease exfoliation corrosion rates of Al-Zn-Mg weld joints by restraining the formation of precipitate free zones and refining grains.
Related Topics
Physical Sciences and Engineering
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Ceramics and Composites
Authors
Ying Deng, Rui Ye, Guofu Xu, Jidong Yang, Qinglin Pan, Bing Peng, Xiaowu Cao, Yulu Duan, Yingjun Wang, Liying Lu, Zhimin Yin,