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Investigation of nucleation behavior of stress corrosion cracking by in-situ observation with microdroplet technique and its life evaluation

Research Project

Project/Area Number 26420011
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Materials/Mechanics of materials
Research InstitutionShizuoka University

Principal Investigator

Fujii Tomoyuki  静岡大学, 工学部, 准教授 (30377840)

Co-Investigator(Kenkyū-buntansha) 東郷 敬一郎  静岡大学, 法人本部, 理事 (10155492)
Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Keywords環境強度 / 応力腐食割れ / き裂 / 結晶粒界 / き裂発生 / 結晶方位 / き裂進展
Outline of Final Research Achievements

Stress corrosion cracking is a degradation phenomenon caused by specific combinations of stress, environment and material, and the technique for its life evaluation should be established. In this study, nucleation behavior of microcracks was investigated from mechanical and crystallographic viewpoints. Constant load tests with in-situ observation were carried out under tetrathionate solution environment using sensitized austenitic stainless steel. As a result, stress corrosion cracks tend to preferentially initiate at the special or random boundary subjected to higher normal stress.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (13 results)

All 2016 2015 2014 Other

All Presentation (11 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results) Remarks (2 results)

  • [Presentation] SCC き裂発生挙動の力学的および結晶学的評価2016

    • Author(s)
      森要太,藤井朋之,東郷敬一郎,島村佳伸
    • Organizer
      M&M2016材料力学カンファレンス
    • Place of Presentation
      神戸大学 六甲台第二キャンパス,兵庫県神戸市
    • Year and Date
      2016-10-08
    • Related Report
      2016 Annual Research Report
  • [Presentation] Mechanical and crystallographic evaluation of nucreation behavior of stress corrosion cracking2016

    • Author(s)
      Yota Mori, Tomoyuki Fujii, Keiichiro Tohgo, Yoshinobu Shimamura
    • Organizer
      International Conference of Advances in Mechanical Engineering 2016 (ICAME2016)
    • Place of Presentation
      Golden Tulip Hotel, Hamdeok,済州島,韓国
    • Year and Date
      2016-09-02
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] オーステナイト系ステンレス鋼の応力腐食き裂進展に及ぼす応力拡大係数変化率の影響2016

    • Author(s)
      藤井 朋之, 河守 基寛, 東郷 敬一郎, 島村 佳伸
    • Organizer
      日本材料学会第65期学術講演会
    • Place of Presentation
      富山大学五福キャンパス,富山県富山市
    • Year and Date
      2016-05-27
    • Related Report
      2016 Annual Research Report
  • [Presentation] 応力腐食割れシミュレーションによる構造材料の寿命評価2016

    • Author(s)
      藤井朋之
    • Organizer
      腐食防食学会 第12回プラント材溶接部腐食合同研究委員会
    • Place of Presentation
      中央大学駿河台記念館,東京都千代田区
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] ステンレス鋼のSCCき裂進展挙動に及ぼす荷重条件の影響2015

    • Author(s)
      河守 基寛, 藤井 朋之, 東郷 敬一郎, 島村 佳伸
    • Organizer
      M&M2015材料力学カンファレンス
    • Place of Presentation
      慶応義塾大学(神奈川県横浜市)
    • Year and Date
      2015-11-21
    • Related Report
      2015 Research-status Report
  • [Presentation] オーステナイト系ステンレス鋼における応力腐食割れの発生挙動の結晶学的評価2015

    • Author(s)
      藤井朋之,東郷敬一郎,三浦祐太朗, 森要太, 島村佳伸
    • Organizer
      第17回破壊力学シンポジウム
    • Place of Presentation
      京都テルサ(京都府京都市)
    • Year and Date
      2015-10-13
    • Related Report
      2015 Research-status Report
  • [Presentation] オーステナイト系ステンレス鋼におけるSCCき裂発生挙動評価2015

    • Author(s)
      藤井朋之,東郷敬一郎,三浦祐太朗,島村佳伸
    • Organizer
      第64期通常総会・学術講演会
    • Place of Presentation
      山形大学米沢キャンパス(山形県米沢市)
    • Year and Date
      2015-05-22 – 2015-05-24
    • Related Report
      2014 Research-status Report
  • [Presentation] オーステナイト系ステンレス鋼におけるSCC き裂発生挙動評価2015

    • Author(s)
      藤井朋之,東郷敬一郎,三浦祐太朗,島村佳伸
    • Organizer
      日本材料学会 第64期学術講演会
    • Place of Presentation
      山形大学(山形県米沢市)
    • Year and Date
      2015-05-22
    • Related Report
      2015 Research-status Report
  • [Presentation] Stress corrosion cracking in sensitized austenitic stainless steel type 304 under tetrathionate solution environment2015

    • Author(s)
      Tomoyuki Fujii, Keiichiro Tohgo, Yutaro Miura, and Yoshinobu Shimamura
    • Organizer
      The 12th International Conference on the Mechanical Behavior of Materials
    • Place of Presentation
      Karlsruhe Convention Centre(Karlsruhe ,Germany)
    • Year and Date
      2015-05-10 – 2015-05-14
    • Related Report
      2014 Research-status Report
  • [Presentation] Stress corrosion cracking in sensitized austenitic stainless steel type 304 under tetrathionate solution environment2015

    • Author(s)
      Tomoyuki Fujii, Keiichiro Tohgo, Yutaro Miura and Yoshinobu Shimamura
    • Organizer
      12th International Conference on the Mechanical Behavior of Materials
    • Place of Presentation
      Karlsuehe Convention Centre(Karlsruhe, Germany)
    • Year and Date
      2015-05-10
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] In-situ Observation of Stress Corrosion Cracking Behavior in Austenitic Stainless Steel2014

    • Author(s)
      Yutaro Miura, Tomoyuki Fujii, Keiichiro Tohgo, and Yoshinobu Shimamura
    • Organizer
      The 13th Joint Symposium among Sister Univerties in Mechanical Engineering (JSSUME2014)
    • Place of Presentation
      Yokohama Kaiko Kinen Kaikan(Yokohama, Kanagawa)
    • Year and Date
      2014-08-15 – 2014-08-17
    • Related Report
      2014 Research-status Report
  • [Remarks] 東郷・島村・藤井研究室

    • URL

      http://mechmat.eng.shizuoka.ac.jp/

    • Related Report
      2016 Annual Research Report 2014 Research-status Report
  • [Remarks] 静岡大学工学部機械工学科材料解析分野 材料創製・強度研究室

    • URL

      http://mechmat.eng.shizuoka.ac.jp/

    • Related Report
      2015 Research-status Report

URL: 

Published: 2014-04-04   Modified: 2018-03-22  

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