Abstract
The corrosion resistance of welded joints of Al-6Mg-Sc-Zr alloy was studied by neutral salt spray and exfoliation corrosion methods. The microstracture of welded joints was investigated by using optical microscope and transmission electron micrograph (TEM). It is demonstrated that the welded joints of Al-6Mg-Sc-Zr alloy are more corrosion resistance, comparing with Al-6Mg-Zr alloy. The addition of scandium in the alloy results in (Al3Sc, Zr) particles, potently refined grains and restrained recrystallization process. The formation of homogeneous, discontinuous distribution of β-phase in welded joints improves the corrosion resistance of welded joints of Al-Mg-Zr alloy with high level content of magnesium.
| Original language | English |
|---|---|
| Pages (from-to) | 216-219 |
| Number of pages | 4 |
| Journal | Journal of Rare Earths |
| Volume | 23 |
| Issue number | 2 |
| State | Published - Apr 2005 |
Keywords
- Al-Mg-Sc alloy
- Corrosion
- Exfoliation corrosion
- Rare earths
- Welded joint
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