14th International Conference on Shot Peening

Fatigue property of Shot peened Maraging Steel fabricated by Additive manufacturing

Toshiya Tsujia, Yuji Kobayashia, Kiyotaka Masaki

SINTOKOGIO,LTD., Development group, 180-1 Komaki Ohgi-cho Toyokawa , Aichi, Japan

t-tsuji@sinto.co.jp

b Okinawa College, National Institute of Technology, 905 Henoko Nago, Okinawa, Japan

masaki-k@okinawa-ct.ac.jp

Introduction

Additive manufacturing has been researching to produce complex parts which cannot produce by conventional manufacturing. Many researchers reported that AM specimen is lower fatigue strength than conventional manufactured specimen due to high surface roughness and existence of large defect. Therefore, it is important to improve the fatigue strength by surface enhancement method.

Objectives

Various shot peening conditions were carried out to the additive manufactured maraging steel specimen that surface condition is as-built condition. These specimens were carried out the fatigue test to investigate the influence of shot peening for the fatigue property of additive manufactured maraging steel.