Table 2: Different heat treatments and shot-peening performed on test specimens.

Test conditionTreatment

AAs received wheel
BA + solution treated at 475°C + quenched in 30°C water + aging at 120°C for 12 h
CB + shot peening
EA + solution treated at 475°C + quenched in 30°C water + aging at 107°C for 6 h + aging at 177°C for 9 h + shot-peening
FA + solution treated at 475°C + quenched in 30°C water + shot-peening + aging at 120°C for 12 h