Shot Peening Effect on Pieces Manufactured by 3D Printer

Author:  Yuji Kobayashi, Kiyotaka Masaki
Source:  ICSP-13
Doc ID:  2017056
Year of Publication:  2017
Abstract:  
Introduction: 3D printing, also known as additive manufacturing (AM), refers to various processes used to synthesize a three-dimensional object. Nowadays, AM systems are employed in many kinds of industries, such as the aerospace and automotive industries. In these industries, the raw materials that are most frequently used to manufacture pieces by 3D printer are aluminium alloy powder,titanium alloy powder and MS1 powder. However, there is little literature about applying shot peening processes to 3D printing material. Therefore, we investigated the effect of shot peening on 3D printing material. This experiment aims to verify if the fatigue strength of the specimens manufactured in MS1 material by 3D printing is improved after shot peening, which kind of layer direction structure vertical or horizontal) has better resistance, and what the peening effect is for small and large size shot media.