• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Development of Local Strengthening Method for Micro Mechanical Components Using FIB Irradiation Induced Martensitic Transformation

Research Project

Project/Area Number 21K18832
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 26:Materials engineering and related fields
Research InstitutionKumamoto University

Principal Investigator

Takashima Kazuki  熊本大学, 国際先端科学技術研究機構, 卓越教授 (60163193)

Project Period (FY) 2021-07-09 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2022: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2021: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Keywords集束イオンビーム / オーステナイトステンレス鋼 / マルテンサイト変態 / 材料強化 / 微小材料 / MEMS / 微小集積機械デバイス / 集束イオンビーム加工 / 強化機構
Outline of Research at the Start

微小機械デバイスの信頼性、耐久性を向上させるには、使用される微小構造材料に対する強化法の開発が必要となる。本研究では、微小機械デバイス材料の一つとして期待されているオーステナイト系ステンレス鋼の微小領域に集束イオンビーム(FIB)を照射させ、マルテンサイトを形成させることで、微小寸法の構造材料に適した新しい強化法の開発を行う。本研究は、微小構造材料に対して、これまでにない新しい材料強化法として期待できる。

Outline of Final Research Achievements

The relationship between the crystal orientation of martensite and its variants induced by focused ion beam (FIB) irradiation of a small area of 304 austenitic stainless steel was investigated and evaluate the mechanical properties of the irradiated area. At FIB irradiation currents of 3 nA or higher, phase transformation from austenite to martensite occurred. The martensitic variants produced varied depending on the orientation of the irradiated crystalline plane. This indicates that the orientation of the martensite formed can be controlled by changing the FIB irradiation direction. Hardness tests were conducted in the irradiated area and an increase in indentation resistance was observed, confirming that FIB irradiation can improve the strength of the micro-region.

Academic Significance and Societal Importance of the Research Achievements

耐久性、信頼性に優れるMEMS等の集積機械デバイスの開発のためには、使用される材料の強化法の開発が必要とされる。しかしながら、マイクロスケール材料の強化法に関する研究は現在までほとんど行われていない。本研究は、世界的に見ても手がつけられていな微小材料の強化機構の一つを提案するものであり、本研究の成果は、我が国がこの分野において世界的なプライオリティを確保するために重要となる。加えて、本研究の成果は現在育ちつつある我が国のMEMS等の微小機械デバイス関連の産業発展に大きく寄与するとともに、新しい産業基盤の育成にもつながるものである。

Report

(3 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • Research Products

    (12 results)

All 2023 2022 2021 Other

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (5 results) (of which Int'l Joint Research: 2 results) Remarks (3 results)

  • [Journal Article] Origin of non-uniform plasticity in a high-strength Al-Mn-Sc based alloy produced by laser powder bed fusion2022

    • Author(s)
      D. Bayoumy, K. Kwak, T. Boll, S. Dietrich, D. Schliephake, J. Huang, J. Yi, K. Takashima, X. Wu, Y. Zhu, A. Huang
    • Journal Title

      Journal of Materials Science and Technology

      Volume: 103 Pages: 121-133

    • DOI

      10.1016/j.jmst.2021.06.042

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Micro-mechanical characterisation of slip behaviour and precipitation strengthening in CoCrFeNiTiMo alloy additively manufactured by laser powder bed fusion2022

    • Author(s)
      K. Kwak, Y. Okamura, Y. Mine, K. Takashima, S. Koseki, S. Ando, K. Kuwabara
    • Journal Title

      Materials Science and Engineering A

      Volume: 840 Pages: 142970-142970

    • DOI

      10.1016/j.msea.2022.142970

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Crystallographic Characterisation of Hydrogen-induced Twin Boundary Separation in Type 304 Stainless Steel Using Micro-tensile Testing2022

    • Author(s)
      Ueki Shohei、Koga Kaoru、Mine Yoji、Takashima Kazuki
    • Journal Title

      Tetsu-to-Hagane

      Volume: 108 Issue: 1 Pages: 97-106

    • DOI

      10.2355/tetsutohagane.TETSU-2021-086

    • NAID

      130008138296

    • ISSN
      0021-1575, 1883-2954
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Multiscale mechanical characterization of 601 nickel-based superalloy fabricated using wire-arc additive manufacturing2022

    • Author(s)
      Kwak Kwangsik、Mayama Tsuyoshi、Mine Yoji、Ohishi Katsuhiko、Ueno Tomonori、Takashima Kazuki
    • Journal Title

      Materials Science and Engineering: A

      Volume: 836 Pages: 142734-142734

    • DOI

      10.1016/j.msea.2022.142734

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] Localized Mechanical Characterization of Microstructures in Metallic Materials2023

    • Author(s)
      K. Takashima
    • Organizer
      CSIRO Manufacturing Seminar
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Micro-tension testing of Fe-based amorphous and ultrafine-grained alloys2022

    • Author(s)
      Y. Tampa, Y. Mine, M. Ohta, K. Takashima, S. Ueki
    • Organizer
      MSE (Materials Science and Engineering) Congress 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 選択的レーザ溶融法により作製したCoCrFeNiTiMo合金のマイクロ引張試験2022

    • Author(s)
      郭 光植, 岡村祐希, 峯 洋二, 高島和希, 安藤慎輔, 桑原孝介
    • Organizer
      日本金属学会2022年秋期講演大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] ナノ双晶SUS304鋼における組織発達に伴う疲労き裂進展2021

    • Author(s)
      峯洋二, 松下彩, 松下彩, 高島和希
    • Organizer
      日本鉄鋼協会第182回秋季講演大会
    • Related Report
      2021 Research-status Report
  • [Presentation] マイクロ材料試験による疲労き裂伝播初期過程の解明2021

    • Author(s)
      高島和希
    • Organizer
      科学技術未来戦略ワークショップ
    • Related Report
      2021 Research-status Report
  • [Remarks] 国際先端科学技術研究機構

    • URL

      https://iroast.kumamoto-u.ac.jp

    • Related Report
      2022 Annual Research Report
  • [Remarks] 先端材料学研究室

    • URL

      http://www.msre.kumamoto-u.ac.jp/~sentan/

    • Related Report
      2022 Annual Research Report
  • [Remarks] 熊本大学国際先端科学技術研究機構

    • URL

      https://iroast.kumamoto-u.ac.jp

    • Related Report
      2021 Research-status Report

URL: 

Published: 2021-07-13   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi