Abstract
It is well known that aging characteristics, heat-resistance, superplasticity, mechanical properties and cast structure are remarkably Improved when scandium is added in aluminum and aluminum alloys. However, it is no clear on the effect of adding scandium to the weld zone of aluminum and aluminum alloys. Especially, there are many uncertain points on the aging characteristic of weld zone. Therefore, in this study, the aging characteristics were examined in details on TIG arc weld zone of the Al-Sc alloy, and they were compared with the characteristics of mother metal.
