Establishment of advanced hybrid treatment for titanium alloy produced by three-dimensional printer

2017 Fiscal Year Final Research Report

• Project/Area Number: 15H03892
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Materials/Mechanics of materials
• Research Institution: Kyoto Institute of Technology
• Principal Investigator: Tatsuro Morita 京都工芸繊維大学, 機械工学系, 教授 (90239658)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 三次元プリンター / チタン合金 / SLM / 複合表面処理 / 複合処理 / プラズマ硬化処理 / 短時間熱処理 / 微粒子衝突処理

Outline of Final Research Achievements

This study was conducted to comprehensively accumulate scientific knowledge concerning the effect of the advanced hybrid treatment composed of plasma nitriding, short-time heat treatment and fine-particle bombarding on additive-manufactured titanium alloy. The results showed that the hybrid treatment improved the fatigue strength of the additive-manufactured titanium alloy to the same level of its wrought material. At the same time, the wear resistance was greatly improved. Moreover, it was shown that the short-time heat treatment was markedly effective to improve the fatigue strength of the additive-manufactured titanium alloy as well as its ductility.

Free Research Field

機械材料・材料力学