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Improvement in performance of titanium alloy produced by 3D printer using advanced rapid high-temperature heat treatment

Research Project

Project/Area Number 19H02027
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 18010:Mechanics of materials and materials-related
Research InstitutionKyoto Institute of Technology

Principal Investigator

Morita Tatsuro  京都工芸繊維大学, 機械工学系, 教授 (90239658)

Co-Investigator(Kenkyū-buntansha) 武末 翔吾  京都工芸繊維大学, 機械工学系, 助教 (00846058)
小茂鳥 潤  慶應義塾大学, 理工学部(矢上), 教授 (30225586)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000)
Fiscal Year 2021: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2020: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2019: ¥13,260,000 (Direct Cost: ¥10,200,000、Indirect Cost: ¥3,060,000)
Keywords三次元プリンタ / LPBF / チタン合金 / 高周波誘導加熱 / 高速酸窒化 / 疲労強度 / 摩擦摩耗特性 / 三次元プリンター / SLM / 耐摩耗性 / 積層造形 / 高周波加熱 / 表面処理
Outline of Research at the Start

新たに考案した先進的急速高温加熱処理により,三次元プリンタ製チタン合金の耐摩耗性,疲労強度および延性を同時に改善しようと試みる.この熱処理では,材料表面を高温まで急速加熱することにより,大気構成元素を高速拡散させて表面硬化させ,短時間に耐摩耗性を改善する.以上により得られた成果は,医療用カスタマイズドインプラントの実用化や航空宇宙関連部品の高性能化・軽量化に寄与する新たな基盤技術として社会へ還元する.

Outline of Final Research Achievements

In this study, the fatigue strength of titanium alloy produced by a 3D printer was remarkably improved in short time (60 s) by a newly developed advanced rapid high-temperature heat treatment (improvement rate: 550 %). The fatigue strength of the alloy was fruther improved to the same level as that of the wrought material by combining the heat treatment with fine-particle bombarding. Rapid oxynitridation caused by the above heat treatment in air resulted in the formation of a hardened layer (thickness: 100 μm). As a result, the friction coefficient was significantly reduced to 0.17 and the wear resistance was markedly improved.

Academic Significance and Societal Importance of the Research Achievements

本研究で得られた成果は,直接的には三次元プリンタ製チタン合金から造形される医療用インプラントや各種製品の高性能化を達成するために活用可能である.特に疲労強度の改善効果は,この材料の主たる問題点を後処理により解決可能であることを意味しており,応用範囲は広い.また,本研究で得られた摩擦摩耗特性の改善に関わる知見は,ステンレス鋼やアルミ合金等にも応用可能と考えられ,さらなる活用が期待される.

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (10 results)

All 2022 2021 2020 2019 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (4 results) Remarks (2 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Short-Time Heat Treatment for Ti–6Al–4V Alloy Produced by Selective Laser Melting2022

    • Author(s)
      Tatsuro Morita, Yohei Oka, Seiichiro Tsutsumi, Shogo Takesue, Norio Higuchi, Hitoshi Sakai
    • Journal Title

      MATERIALS TRANSACTIONS

      Volume: 63 Issue: 6 Pages: 854-863

    • DOI

      10.2320/matertrans.MT-M2022018

    • ISSN
      1345-9678, 1347-5320
    • Year and Date
      2022-06-01
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Rapid Oxynitriding of Ti–6Al–4V Alloy by Induction Heating in Air2021

    • Author(s)
      K. Tamura, S. Takesue, T. Morita, E. Marin, J. Komotori, Y. Misaka, M. Kumagai
    • Journal Title

      MATERIALS TRANSACTIONS

      Volume: 62 Issue: 1 Pages: 111-117

    • DOI

      10.2320/matertrans.Z-M2020858

    • NAID

      130007960224

    • ISSN
      1345-9678, 1347-5320
    • Year and Date
      2021-01-01
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Rapid nitriding mechanism of titanium alloy by gas blow induction heating2020

    • Author(s)
      Shogo Takesue, Shoichi Kikuchi, Yoshitaka Misaka, Tatsuro Morita, Jun Komotori
    • Journal Title

      Surface and Coatings Technology

      Volume: 399 Pages: 126160-126160

    • DOI

      10.1016/j.surfcoat.2020.126160

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] 高周波誘導加熱での高速酸窒化処理およびFPB処理によるTi-6Al-4V合金積層造形材の機能性向上2021

    • Author(s)
      奥野由雅,森田辰郎,武末翔吾,酒井仁史,樋口官男,小茂鳥潤,三阪佳孝,熊谷正夫
    • Organizer
      日本材料学会 第7回材料week若手学生研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 大気中での高周波誘導加熱によるTi-6Al-4V合金の高速酸窒化処理2019

    • Author(s)
      田村和暉,森田辰郎,武末翔吾,小茂鳥潤,三阪佳孝,熊谷正夫
    • Organizer
      日本材料学会第5回材料WEEK若手学生研究発表会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Ti-6Al-4V合金積層造形材の大気中での高周波誘導加熱による高速酸窒化処理(優秀講演発表賞受賞)2019

    • Author(s)
      奥野由雅,田村和暉,森田辰郎,武末翔吾,小茂鳥潤
    • Organizer
      日本材料学会関東支部理事会主催学生研究交流会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 大気中での高周波誘導加熱によるTi-6Al-4V合金積層造形材の高速酸窒化処理2019

    • Author(s)
      田村和暉,森田辰郎,武末翔吾,酒井仁史,樋口官男,小茂鳥潤,三阪佳孝,熊谷正夫
    • Organizer
      日本金属学会2019年秋期(第165回)講演大会
    • Related Report
      2019 Annual Research Report
  • [Remarks] 三次元プリンタ製チタン合金の高性能化

    • URL

      https://www.kit.ac.jp/chuumokukenkyu/chuumokukenkyu202204/

    • Related Report
      2021 Annual Research Report
  • [Remarks] 先端材料学研究室ホームページ

    • URL

      http://www.cis.kit.ac.jp/~morita/jp/index.html

    • Related Report
      2019 Annual Research Report
  • [Patent(Industrial Property Rights)] チタン合金造形物2022

    • Inventor(s)
      森田辰郎・他5名
    • Industrial Property Rights Holder
      森田辰郎・他5名
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2021-181392
    • Filing Date
      2022
    • Related Report
      2021 Annual Research Report

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Published: 2019-04-18   Modified: 2023-01-30  

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