Abstract
Post weld heat treatments (5hours / 110 °C, 5 hours / 195 °C, 7 days / 100 °C, 1 hour / 480 °C, torch) have been investigated in order to increase the corrosion and the environmental cracking resistance of aluminum alloy 7075-T651 friction stir weld. The post weld heat treatments affected the microstructure and the corrosion behavior. A good compromise between hardness, corrosion and environmental cracking resistance was found with the torch treatment which slightly increased the corrosion resistance of the "soft" heat affected zones causing the main corrosion to occur in the nugget region resulting in a general increase in the weld corrosion resistance. The torch treatment also eliminated the grain boundary phases resulting in lower intergranular corrosion susceptibility and higher strain to failure.
| Original language | English |
|---|---|
| Pages | 279-283 |
| Number of pages | 5 |
| State | Published - 2002 |
| Event | Trends in Welding Research: Proceedings of the 6th International Conference - Phoenix, AZ, United States Duration: Apr 15 2002 → Apr 19 2002 |
Conference
| Conference | Trends in Welding Research: Proceedings of the 6th International Conference |
|---|---|
| Country/Territory | United States |
| City | Phoenix, AZ |
| Period | 4/15/02 → 4/19/02 |
Keywords
- AA7075-T651
- Friction stir welding
- Post-weld heat treatments
ASJC Scopus subject areas
- General Materials Science
- Mechanical Engineering