Susceptibility Control of Stress Corrosion Cracking on Al-Zn-Mg Alloy Using Friction Stir Method

Abstract

Susceptibility of stress corrosion cracking (SCC) on Al-Zn-Mg alloy using friction stir method was evaluated. Alternating salt-water immersion test was conducted using specimen with base metal and stirred material. As a result of immersion test, cracks occurred on specimen with base metal after 5.5 days immersion. On the other hand, no cracks occurred on specimen with stirred material. It was concluded stirred region of Al-Zn-Mg alloy shows low susceptibility against SCC.