Abstract
Dissimilar metals TIG welding-brazing of 5A06 aluminum alloy to SUS321 stainless steel has been carried out with Al-Si12 eutectic filler metal and modified non-corrosive flux. The surface appearance and microstructures of the joint were analyzed and the average tensile strength of the joint was estimated. The results show that a sound dissimilar metals joint is obtained by TIG welding-brazing. Slag and residual flux on steel surface can be removed by sanding easily. The joint has dual characteristics: in aluminum alloy side, it is a welded joint, while in stainless steel side, it is a brazed joint. The whole interface layer, unequal in thickness at different position, ranges from 5μm to 25μm. The average tensile strength of the butt joint reaches 120MPa and the fracture occurs at the interface layer.
| Original language | English |
|---|---|
| Pages (from-to) | 26-31 |
| Number of pages | 6 |
| Journal | China Welding (English Edition) |
| Volume | 19 |
| Issue number | 1 |
| State | Published - Mar 2010 |
Keywords
- Aluminum alloy
- Microstructure
- Stainless steel
- TIG welding-brazing
- Tensile strength
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