Effect of Shot Peening in Different Shot Distance and Shot Angle on Surface Morphology, Surface Roughness and Surface Hardness of 316L Biomaterial

International Conference on Chemistry and Material Science 2017

化学;材料科学

Kondi Maliwemu, Erich Umbu^1,2 ; Malau, Viktor^1 ; Iswanto, Priyo Tri^1

Department of Mechanical and Industrial Engineering, Gadjah Mada University, Jl. Grafika 2, Yogyakarta

55281, Indonesia^1

Department of Mechanical Engineering, Nusa Cendana University, Jl. Adi Sucipto, Penfui, Kupang, East Nusa Tenggara

85100, Indonesia^2

关键词: Beneficial effects;    Compressive residual stress;    Mechanical surface treatment;    Metallic material;    Surface characteristics;    Surface hardness;    Surface of materials;    Working pressures;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/299/1/012051/pdf
DOI  :  10.1088/1757-899X/299/1/012051

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Shot peening is a mechanical surface treatment with a beneficial effect to generate compressive residual stress caused by plastic deformation on the surface of material. This plastic deformation can improve the surface characteristics of metallic materials, such as modification of surface morphology, surface roughness, and surface hardness. The objective of this study is to investigate the effect of shot peening in different shot distance and shot angle on surface morphology, surface roughness, and surface hardness of 316L biomaterial. Shot distance was varied at 6, 8, 10, and 12 cm and shot angle at 30, 60, and 90°, working pressure at 7 kg/cm2, shot duration for 20 minutes, and using steel balls S-170 with diameter of 0.6 mm. The results present that the shot distance and shot angle of shot peening give the significant effect to improve the surface morphology, surface roughness, and surface hardness of 316 L biomaterial. Shot peening can increase the surface roughness by the increasing of shot distance and by the decreasing of shot angle. The nearest shot distance (6 cm) and the largest shot angle (90°) give the best results on the grain refinement with the surface roughness of 1.04 μm and surface hardness of 534 kg/mm2.