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Development of high strength and elongation structural material for cryogenic temperature used by characteristic improvement of cryogenic tensile properties by heterogeneous phase structure.

Research Project

Project/Area Number 20K14605
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 18010:Mechanics of materials and materials-related
Research InstitutionKanazawa University

Principal Investigator

Koga Norimitsu  金沢大学, 機械工学系, 准教授 (30735923)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2022: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2021: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords構造材料 / 鉄鋼材料 / 引張特性 / 極低温 / 二相鋼 / セレーション / 複相組織 / 低温引張特性 / 変形・破壊 / 結晶粒微細化 / 加工誘起変態 / 積層材 / 相応力 / マルチスケール解析
Outline of Research at the Start

次世代型核融合炉の構造部材として極低温下で優れた強度と延性を有する構造材料が求められている。一方、機械的性質(強度、伸びなど)の温度依存性が異なる二相を有する金属材料は、優れた低温引張特性を示すことがわかっている。本研究では、まず二相の分布状態を制御することにより、低温引張特性と異相分布状態の関係を明らかにする。次いで、マルチスケールでの変形・破壊挙動の解析を行い、異相混在による優れた低温特性発現メカニズムを明らかとする。最終的に、得られた知見をもとに新たな高強度・高延性低温用構造材料を開発することを目標とする。

Outline of Final Research Achievements

Duplex steel consisted of ferrite with body-centered cubic structure and austenite with face-centered cubic structure exhibited excellent strength and elongation at low temperatures. Deformation-induced martensitic transformation and simultaneous deformation between ferrite and austenite provided this excellent low-temperature tensile properties. In the duplex steel, grain refinement improves strength and elongation, especially at low temperatures. Duplex steel with fine grain size exhibited a significantly higher strength than that of a conventional steel, while its elongation was approximately equal to conventional steel’s one.

Academic Significance and Societal Importance of the Research Achievements

4.2 Kでの変形では、発熱を伴うセレーションと呼ばれる局所領域の変形によってその機械的性質が変化することが示唆された。本結果は、極低温環境下での金属材料の変形についての基礎的知見を与えるものであり、その学術的意義は深い。一方で、本研究で最終的に得られた二相鋼の4.2 Kでの強度特性は従来材を遥かに凌駕しており、次世代型核融合炉の構造部材になりえる。よって、本成果は、将来的に核融合炉の普及を通して社会に貢献できる可能性を秘めている。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (22 results)

All 2022 2021 Other

All Journal Article (12 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 12 results) Presentation (9 results) (of which Int'l Joint Research: 5 results,  Invited: 1 results) Remarks (1 results)

  • [Journal Article] Effects of Vanadium Addition on Strain Distribution, Crack Initiation and Propagation during Low-cycle Fatigue Test in Ferrite and Martensite Dual-phase Steel2022

    • Author(s)
      Koga Norimitsu、Kaseya Akihiro、Umezawa Osamu、Nakata Hiroshi、Toyoda Shunsuke
    • Journal Title

      ISIJ International

      Volume: 62 Issue: 10 Pages: 2132-2134

    • DOI

      10.2355/isijinternational.ISIJINT-2022-173

    • ISSN
      0915-1559, 1347-5460
    • Year and Date
      2022-10-15
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Deformation and Fracture Behaviors of Spheroidized Pearlitic Steel under Tensile Loading2022

    • Author(s)
      Koga Norimitsu、Yajima Yuto、Watanabe Chihiro
    • Journal Title

      ISIJ International

      Volume: 62 Issue: 10 Pages: 2025-2035

    • DOI

      10.2355/isijinternational.ISIJINT-2022-154

    • ISSN
      0915-1559, 1347-5460
    • Year and Date
      2022-10-15
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Statistical Analysis of Influential Factors on the Stability of Retained Austenite in Low Alloy TRIP Steel2022

    • Author(s)
      Koga Norimitsu、Yamashita Takayuki、Ogawa Keisuke、Umezawa Osamu
    • Journal Title

      MATERIALS TRANSACTIONS

      Volume: 63 Issue: 5 Pages: 693-702

    • DOI

      10.2320/matertrans.MT-M2021239

    • ISSN
      1345-9678, 1347-5320
    • Year and Date
      2022-05-01
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Deformation Structure Around a Crack in γ′-Fe4N Layer of Nitrided Extra-Low-Carbon Steel Subjected to Cyclic Tensile Test2022

    • Author(s)
      Koga Norimitsu、Tanahara Kento、Umezawa Osamu
    • Journal Title

      Metallurgical and Materials Transactions A

      Volume: 53 Issue: 4 Pages: 1150-1155

    • DOI

      10.1007/s11661-022-06607-3

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Visualization of strain distribution around fatigue crack developed by low cycle fatigue test in high-strength steels using digital image correlation method for replica films2022

    • Author(s)
      Koga Norimitsu、Sakamaki Yuta、Kaseya Akihiro、Umezawa Osamu、Nakata Hiroshi、Toyoda Shunsuke
    • Journal Title

      Materials Characterization

      Volume: 185 Pages: 111731-111731

    • DOI

      10.1016/j.matchar.2022.111731

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Role of ferrite and austenite phases on the deformation behavior and mechanical properties in heterogeneous nanostructured duplex stainless steel aged at different temperatures2022

    • Author(s)
      Koga Norimitsu、Suzuki Shinya、Jiang Hua、Watanabe Tatsuki、Watanabe Chihiro、Miyajima Yoji、Miura Hiromi
    • Journal Title

      Journal of Materials Science

      Volume: 57 Issue: 9 Pages: 5606-5619

    • DOI

      10.1007/s10853-022-06924-3

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Visualization of Microscopic-Scale Strain Distributions in Martensitic Steel over a Wide Range of Tensile Strain by Using Digital Image Correlation Method on Replica Film2021

    • Author(s)
      Koga Norimitsu、Fujita Motoki、Watanabe Chihiro
    • Journal Title

      MATERIALS TRANSACTIONS

      Volume: 62 Issue: 9 Pages: 1424-1427

    • DOI

      10.2320/matertrans.MT-M2021118

    • NAID

      130008077613

    • ISSN
      1345-9678, 1347-5320
    • Year and Date
      2021-09-01
    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effect of Aging on Low-temperature Tensile Properties of Ultra-low Carbon Steel2021

    • Author(s)
      Koga Norimitsu、Kanehira Yuki、Huyen Pham Thi Thanh、Hori Kazuya、Umezawa Osamu
    • Journal Title

      ISIJ International

      Volume: 61 Issue: 8 Pages: 2308-2316

    • DOI

      10.2355/isijinternational.ISIJINT-2021-143

    • NAID

      130008075184

    • ISSN
      0915-1559, 1347-5460
    • Year and Date
      2021-08-15
    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Influential factors on the deformability of colonies in pearlitic steel2021

    • Author(s)
      Yajima Yuto、Koga Norimitsu、Watanabe Chihiro
    • Journal Title

      Materials Characterization

      Volume: 177 Pages: 111197-111197

    • DOI

      10.1016/j.matchar.2021.111197

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Work hardening behavior of dual phase copper?iron alloy at low temperature2021

    • Author(s)
      Yamashita Takayuki、Koga Norimitsu、Kawasaki Takuro、Morooka Satoshi、Tomono Shohei、Umezawa Osamu、Harjo Stefanus
    • Journal Title

      Materials Science and Engineering: A

      Volume: 819 Pages: 141509-141509

    • DOI

      10.1016/j.msea.2021.141509

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Tensile properties and deformation behavior of ferrite and austenite duplex stainless steel at cryogenic temperatures2021

    • Author(s)
      Koga Norimitsu、Nameki Tatsuya、Umezawa Osamu、Tschan Valentin、Weiss Klaus-Peter
    • Journal Title

      Materials Science and Engineering: A

      Volume: 801 Pages: 140442-140442

    • DOI

      10.1016/j.msea.2020.140442

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Low-temperature tensile properties of Cu-Fe laminated sheets with various number of layers2021

    • Author(s)
      Koga Norimitsu、Tomono Shohei、Umezawa Osamu
    • Journal Title

      Materials Science and Engineering: A

      Volume: 811 Pages: 141066-141066

    • DOI

      10.1016/j.msea.2021.141066

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] Low-temperature tensile properties of aged ultra-low carbon steels2022

    • Author(s)
      Norimitsu Koga, Yuki Kanehira, Pham Thi Thanh Huyen, Kazuya Hori, Osamu Umezawa
    • Organizer
      ICAS2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] High-temperature hardness in various steels measured by small ball rebound hardness test2022

    • Author(s)
      Norimitsu Koga, Kouki Koizumi, Shuto Takayasu, Osamu Umezawa, Mizuki Watanabe, Masayuki Yamamoto, Takashi Yamamoto
    • Organizer
      ICSMA19
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] デジタル画像相関法を用いた金属材料の変形挙動の可視化2022

    • Author(s)
      古賀 紀光
    • Organizer
      日本金属学会第171回講演大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] パーライト鋼の変形・破壊挙動に及ぼす球状化処理の影響2022

    • Author(s)
      古賀 紀光、矢島 優斗、渡邊千尋
    • Organizer
      日本鉄鋼協会第184回秋季講演大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Fe/Cu積層材の圧延加工により発達する変形組織2022

    • Author(s)
      古賀 紀光、加藤 琉聖、渡邊千尋
    • Organizer
      日本鉄鋼協会第185回春季講演大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] フェライト+オーステナイト二相ステンレス鋼の低温引張特性に及ぼす結晶粒径の影響2021

    • Author(s)
      野口将希、古賀紀光、渡邊千尋
    • Organizer
      日本鉄鋼協会第182回秋季講演大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Crystallographic orientation on raft-like structure developed by tensile deformation in Cu-Fe dual phase alloy sheet2021

    • Author(s)
      Norimitsu Koga, Shohei Tomono, Osamu Umezawa
    • Organizer
      ICOTOM2019
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Temperature dependence of tensile properties in bcc+fcc dual phase materials2021

    • Author(s)
      Norimitsu Koga, Osamu Umezawa
    • Organizer
      Materials science world forum
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Effects of grain size and strain rate on the low-temperature tensile properties of ferrite-austenite duplex stainless steel2021

    • Author(s)
      Norimitsu Koga, Tatsuya Nameki, Osamu Umezawa
    • Organizer
      CEC/ICMC2021
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Remarks] 金沢大学_研究者情報

    • URL

      https://ridb.kanazawa-u.ac.jp/public/detail.php?id=4785

    • Related Report
      2020 Research-status Report

URL: 

Published: 2020-04-28   Modified: 2024-01-30  

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