Actual marine atmospheric pre-corrosion behavior and its effect on the fatigue performance of 7075-T73 aluminum alloy were studied by means outdoor exposure testing testing. The surface cross-sectional microstructures specimens after different numbers days analyzed. Localized pitting, intergranular exfoliation corrosion occurred during in a atmosphere. degree severity increased with increasing ...

The critical energy release rate defined as Gc = 2γ + γp (where, γ is the cohesive energy and γp is the plastic work) is widely used as a macroscopic fracture criterion. During embrittlement of Aluminum by Gallium, impurity segregation is localized to a small region along the grain boundary and the bulk plastic properties is unaffected. Yet, the critical energy release rate (which is predominan...