International Journal of Korean Welding Society
- Volume 2 Issue 2
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- Pages.42-46
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- 2002
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- 1598-1177(pISSN)
Solidification Cracking Susceptibility of Al-Mg-Si Alloy Laser Welds
- Yoon, J.W. (Department of Advanced Materials Engineering, Dongeui University)
- Published : 2002.12.01
Abstract
The solidification cracking susceptibilities of Al-Mg-Si alloy laser welds were assessed using the self-restraint tapered specimen crack test. The cracking susceptibility of 6061 and 6082 Al-Mg-Si alloy laser welds was substantially reduced when the filler wire containing high Si such as Al-12 wt.% Si (4047A) was used. The amount of eutectic was observed to affect the solidification cracking of Al-Mg-Si alloy laser welds. Abundant eutectic seems to heal the cracking and reduces the cracking susceptibility, while an initial increase in eutectic liquid leads to the increased cracking tendency.
Keywords
- A1-Mg-Si alloys;
- Laser welding;
- Solification Cracking Susceptibility;
- Tapered specimen crack test;
- Amount of eutectic