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Influence of shot peening on the EN-AW-6082 Al alloy fatigue resistance

Nový F., Chalupová M., Škorík V., Bokůvka O.

Zeszyty Naukowe Politechniki Świętokrzyskiej. Nauki Techniczne

2011

Z. 16

73-80

The influence of shot peening on fatigue resistance of the wrought EN-AW-6082-T6 aluminium alloy was investigated in the very high cycle region. Specimens with as-machined and shot peened surfaces were subjected to high frequency fatigue loading. Shot peening process led to the formation of compressive residual stresses in the surface layer and effectively improved the fatigue resistance. The tests results showed that the fatigue strength for shot peened specimens is much higher than that for as-machined specimens in the all investigated range of cycles.