Effect of strain rate and temperature at high strains on fatigue behavior of SAP alloys

Fatigue behavior of three SAP alloys of two nominal compositions (7 and 13% Al2O3) was studied in terms of strain rate and temperature at high strains; strain rate had no effect on life at 80 F, but had increasingly greater effect with increasing temperature above 500 F; life decreased with decreasing strain rate, above 500 F, and with increasing temperature; ductility at fracture in tension test is shown to be important factor in determining life under conditions of test. (20318)