Effect of surface roughness and shot peening treatments on the mechanical properties of aluminum alloy 2024-T4

الملخص EN

The objective of the present paper is to investigate the effect of surface roughness on mechanical properties of aluminum alloy 2024-T4.

This paper describes the effect of surface roughness at values of ( 0.1 , 3.5 , 8 ) μm on hardness and yield strength and also estimate the effect of shot peening on the yield strength at period time of (5 , 10, 15, 20, 25 ) min.

The obtained results show that the low roughness improved the mechanical properties by 15.

7 % and also the low roughness is better than the shot peening treatments by 5.

3 % because the low roughness make surface more coherent.

Empirical equations are formulated based on the experimental results to evaluate the yield strength with the surface roughness and the hardness.