Corrosion Effects on High?cycle Fatigue Lifetime and Fracture Behavior for Heat?treated Aluminum?matrix Nano?clay?composite Compared to Piston Aluminum Alloy

In this research, the corrosion effect has been investigated on high-cycle fatigue lifetime and fracture behavior for heat-treated aluminum-matrix nano-clay-composite piston aluminum alloys. For objective, after fabricating stir-casted nano-clay-composite, standard samples were machined rotary bending tests performed. To study effect, some specimens corroded in 0.00235 % H2SO4 solution 200 h then, they tested under cyclic loading. Due to increase hardness by adding nano-clay particles heat treatment, higher strength occurred, compared base material. Moreover, shortened lifetime; however, was less corrosion-fatigue lifetime. addition, failure mechanism brittle due observation of quasi-cleavage cleavage marks. Experimental data illustrated that environment effectively significant alloy, pits surface defects. This degradation material properties demonstrated as a decreasing shift both low-cycle regimes.