Effect of the microstructure generated by Repetitive Corrugation and Straightening (RCS) process on the mechanical properties and stress corrosion cracking of Al-7075 alloy

This study discussed the effect of heterogeneous microstructure generated through Repetitive Corrugation and Straightening (RCS) process on mechanical stress corrosion cracking behavior AA7075. As a result RCS process, significant grain refinement was obtained. The average size ranged from 126 to 59 μm, for initial condition 4 passes, respectively. yield strength hardness increased 170% 15% pass, remaining almost constant afterward. evaluation showed decrement in number cracks 21.6% 23.5% between fourth passes. pitting were dominant mechanisms tested samples. results also terms microstructural features.