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| Numerical Study on Surface Integrity of Shot-Peened Aluminum |
| WANG Cheng, ZHOU Zechen, YANG Jichong |
| ( School of Mechanical Engineering, Anhui University of Science and Technology, Huainan 232001, China) |
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Abstract The surface integrity of shot-peened aluminum was numerically studied. A new finite element model of shot peening was developed, in which the indentations produced by multiple shot impacts are distributed uniformly on a circle within the shot-peened surface. The shot peening coverage was calculated by creating a circular path. Under the different shot peening coverage, the circular path-distributed surface morphology, roughness, residual stress, work hardening and grain refinement were investigated. The results show that, with the increase of shot peening coverage, the surface roughness, residual compressive stress, work hardening degree and grain-refinement degree increase, but the increments gradually decrease and present the saturate tendency after exceeding the full coverage, which are in accord with the evolution of surface equivalent plastic strain induced by multiple shot impacts.
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2020, 
