Gas Turbine's In-service Stress Detection based on Microstructural Changes of Single Crystal Ni-Base Superalloy

• Project/Area Number: 19860036
• Research Category: Grant-in-Aid for Young Scientists (Start-up)
• Allocation Type: Single-year Grants
• Research Field: Materials/Mechanics of materials
• Research Institution: Nagaoka University of Technology
• Principal Investigator: SAKAGUCHI Motoki Nagaoka University of Technology, 工学部・機械系, 助教 (60452083)
• Project Period (FY): 2007 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥3,082,000 (Direct Cost: ¥2,680,000、Indirect Cost: ¥402,000); Fiscal Year 2008: ¥1,742,000 (Direct Cost: ¥1,340,000、Indirect Cost: ¥402,000); Fiscal Year 2007: ¥1,340,000 (Direct Cost: ¥1,340,000)
• Keywords: Ni基超合金 / 自己組織化 / モニタリング / 寿命延伸 / 残留応力 / 機械材料・材料力学 / 超合金

Research Abstract

本研究では、優れた高温強度を持つ単結晶Ni基超合金の組織形態変化現象に焦点を当て、その現象を意図的に発現させる実験を様々な条件下で行うとともに、発現した組織変化を数的表示するための評価法の開発、現象を支配する駆動力とメカニズムの解明を通し、形態変化現象を積極的に利用した「ガスタービン高温部材の寿命延伸技術」の根幹を担う基礎的事象を学術的に明らかにした.

Research Products

• [Journal Article] Low Cycle and Thermo-Mechanical Fatigue of Friction-Welded IN718/MarM247 Dissimilar Joint (2008)
  • Author(s): M.Sakaguchi, A.Sano, T.H.Tra, M.Okazaki, M.Sekihara
  • Journal Title: J. Solid Mech. & Mater. Eng Vol.2 Pages: 1508-1516
  • Peer Reviewed
• [Journal Article] Creep-Fatigue and Thermo -Mechanical Fatigue of Friction-Welded IN718 / MarM247 Dissimilar Joint (2008)
  • Author(s): M.Okazaki, M.Sakaguchi, T.H.Tra, M. Sekihara
  • Journal Title: Superalloys 2008 Pages: 221-228
  • Peer Reviewed
• [Journal Article] A New Analytical Method of γ/γ' Morphology in Single Crystal Ni Base Superalloys : For New Orientation of Damage and Remaining Life Assessment (2008)
  • Author(s): M.Sakaguchi, M.Okazaki
  • Journal Title: Superalloys 2008 Pages: 873-880
  • Peer Reviewed
• [Journal Article] Thermo -mechanical fatigue failure of a single crystal Ni-base superalloy (2008)
  • Author(s): M.Okazaki, M.Sakaguchi
  • Journal Title: Int. J. Fatigue Vol.30 Pages: 318-323
  • Peer Reviewed
• [Journal Article] A New Analytical Method of γ/γ' Morphology in Single Crystal Ni-Base Superalloys : For New Orientation of Damage and Remaining Life Assessment (2008)
  • Author(s): Motoki SAKAGUCHI, Masakazu OKAZAKI
  • Journal Title: Superalloys 2008 Pages: 873-880
  • Peer Reviewed
• [Journal Article] Creep-Fatigue and Thermo-Mechanical Fatigue of Friction-Welded IN718 / MarM247 Dissimilar Joint (2008)
  • Author(s): Masakazu OKAZAKI, Motoki SAKAGUCHI, Tra Hung TRAN., Masaru SEKIHARA
  • Journal Title: Superalloys 2008 Pages: 221-228
  • Peer Reviewed
• [Journal Article] Low Cycle and Thermo-Mechanical Fatigue of Friction Welded Dissimilar Superalloys Joint (2008)
  • Author(s): Motoki SAKAGUCHI, Atsushi SANO, Tra Hung TRAN., Masakazu OKAZAKI, Masaru SEKIHARA
  • Journal Title: Journal of Solid Mechanics and Materials Engineering 2 Pages: 1508-1516
  • NAID: 130000079148
  • Peer Reviewed
• [Journal Article] Thermo-mechanical fatigue failure of a single crystal Ni-base superalloy (2008)
  • Author(s): M. OKAZAKI and M. SAKAGUCHI
  • Journal Title: International Journal of Fatigue 30 Pages: 318-323
  • Peer Reviewed
• [Journal Article] Effect of Microstructure of Thermo-Mechanical and Isothermal Low cycle Fatigue Failures of a Single Crystal Ni-Base Superalloy (2007)
  • Author(s): M.Sakaguchi, M.Okazaki
  • Journal Title: Key Eng. Materials Vol.353 Pages: 491-494
  • Peer Reviewed
• [Journal Article] Fatigue Life Evaluation of a Single Crystal Ni-base Superalloy, Accompanying with Change of Microstructural Morphology (2007)
  • Author(s): M.Sakaguchi, M.Okazaki
  • Journal Title: Int.J.Fatigue Vol.29 Pages: 1959-1965
  • Peer Reviewed
• [Journal Article] Fatigue Life Evaluation of a Single Crystal Ni-base Superalloy, Accompanying with Change of Microstructural Morphology. (2007)
  • Author(s): M. SAKAGUCHI and M. OKAZAKI
  • Journal Title: International Journal of Fatigue 29 Pages: 1959-1965
  • Peer Reviewed
• [Journal Article] Effect of Microstructure of Thermo-Mechanical and Isothermal Low cycle Fatigue Failures of a Single Crystal Ni-Base Superallo (2007)
  • Author(s): M. SAKAGUCHI and M. OKAZAKI
  • Journal Title: Key Engineering Materials 353 Pages: 491-494
  • Peer Reviewed
• [Presentation] 単調負荷により生じる超合金組織の形態変化とその温度依存性 (2008)
  • Author(s): 阪口基己
  • Organizer: 日本材料学会第46回高温強度シンポジウ
  • Place of Presentation: 北海道登別市
  • Year and Date: 2008-12-05
• [Presentation] 単調負荷により生じる超合金組織の形態変化とその温度依存性 (2008)
  • Author(s): 吉田高広, 阪口基己, 岡崎正和
  • Organizer: 第46回高温強度シンポジウム
  • Place of Presentation: 北海道登別市
  • Year and Date: 2008-12-05
• [Presentation] 実機使用ガスタービン翼の局所き裂進展特性評価 (2008)
  • Author(s): 佐佐木洋輔
  • Organizer: 第52回日本学術会議材料工学連合講演会
  • Place of Presentation: 京都府京都市
  • Year and Date: 2008-10-22
• [Presentation] Early Growth of Creep-Fatigue Small Crack in Advanced Ni-Base Sueralloys (2008)
  • Author(s): M.Sakaguchi
  • Organizer: 5^<th> International Conference on Creep, Fatigue and Creep-Fatigue Interarion
  • Place of Presentation: Kalpallam, India
  • Year and Date: 2008-09-26
• [Presentation] Early Growth of Creep-Fatigue Small Crack in Advanced Ni-Base Sueralloys (2008)
  • Author(s): Masakazu OKAZAKI, Motoki SAKAGUCHI, Ryohta KAMMA
  • Organizer: 5th International Conference on Creep, Fatigue and Creep-Fatigue Interarion
  • Place of Presentation: Kalpakkam, India
  • Year and Date: 2008-09-26
• [Presentation] A New Analytical Method of γ/γ' Morphology in Single Crystal Ni-Base Superalloys : For New Orientation of Damage and Remaining Life Assessment (2008)
  • Author(s): M.Sakaguchi
  • Organizer: Superalloys 2008
  • Place of Presentation: Champion, USA
  • Year and Date: 2008-09-16
• [Presentation] ν/γ' Morphological Changes in Single Crystal Ni-Base Superlloys under Cyclic Loadings ; A New Morphological Analysis for Fatigue Damage Detection (2008)
  • Author(s): M.Sakaguchi
  • Organizer: 6^<th> International Conference on Low Cycle Fatigue
  • Place of Presentation: Berlin, Germany
  • Year and Date: 2008-09-16
• [Presentation] Strength of MarM247 / IN718 Dissimilar Metals Joint under Creep-Fatigue and Thermo-Mechanical Fatigue Loading (2008)
  • Author(s): M.Okazaki
  • Organizer: 6^<th> International Conference on Low Cycle Fatigue
  • Place of Presentation: Berlin, Germany
  • Year and Date: 2008-09-15
• [Presentation] γ/γ' Morphological Changes in Single Crystal Ni-Base Superlloys under Cyclic Loadings ; A New Morphological Analysis for Fatigue Damage Detection (2008)
  • Author(s): Motoki SAKAGUCHI, Masakazu OKAZAKI
  • Organizer: 6th International Conference onf Low Cycle Fatigue
  • Place of Presentation: Berlin, Germany
  • Year and Date: 2008-09-11
• [Presentation] Strength of MarM247/IN718 Dissimilar Metals Joint under Creep-Fatigue and Thermo-Mechanical Fatigue Loading (2008)
  • Author(s): Tra Hung TRAN, Masakazu OKAZAKL, Motoki SAKAGUCHI, Masaru SEKIHARA
  • Organizer: 6th International Conference onf Low Cycle Fatigue
  • Place of Presentation: Berlin, Germany
  • Year and Date: 2008-09-10
• [Presentation] Low Cycke Fatigue and Thermo-Mechanical Fatigue of Friction Welded Dissimilar Superalloys Joint (2008)
  • Author(s): M.Sakaguchi
  • Organizer: 2008 M&M International Symposium for Young Researchers
  • Place of Presentation: 和歌山県西牟婁郡
  • Year and Date: 2008-03-09
• [Presentation] Low Cycke Fatigue and Thermo-Mechanical Fatigue of Friction Welded Dissimilar Superalloys Joint (2008)
  • Author(s): Motoki SAKAGUCHI, Atsushi SANO, Masakazu OKAZAKI and Masaru SEKIHARA
  • Organizer: 2008 M&M International Symposium for Young Researchers
  • Place of Presentation: 和歌山市 白浜温泉旅館
  • Year and Date: 2008-03-09
• [Presentation] 各種高温疲労環境下での超合金異材継手の破損挙動 (2007)
  • Author(s): 佐野篤史, 阪口基己, 岡崎正和, 関原傑
  • Organizer: 第45回高温強度シンポジウム
  • Place of Presentation: 東京都 東京工業大学
  • Year and Date: 2007-12-06
• [Presentation] 種々の負荷により生じる超合金組織の形態変化と高温力学場の検出技術への応用 (2007)
  • Author(s): 阪口基己
  • Organizer: 第51回日本学術会議材料工学連合講演会
  • Place of Presentation: 京都府京都市
  • Year and Date: 2007-11-29
• [Presentation] 種々の負荷により生じる超合金組織の形態変化と高温力学場の検出技術への応用 (2007)
  • Author(s): 阪口基己, 池桃子, 岡崎正和
  • Organizer: 第51回日本学術会議材料後学連合講演会
  • Place of Presentation: 京都市 京大会館
  • Year and Date: 2007-11-29
• [Presentation] 複合構造を有する金属材料の局所的材料特性評価 (2007)
  • Author(s): 岡崎正和, 阪口基己, 平野賢一, 菅間良太
  • Organizer: M&M2007 材料力学カンファレンス
  • Place of Presentation: 東京都 東京大学
  • Year and Date: 2007-10-26
• [Presentation] EB-PVD TBCの熱サイクル損傷特性とその定量化の試み (2007)
  • Author(s): 山岸郷志、岡村達磨、岡崎正和、阪口基己
  • Organizer: M&M2007 材料力学カンファレンス
  • Place of Presentation: 東京都 東京大学
  • Year and Date: 2007-10-24
• [Presentation] Hybrid Composite Model for High-Temperature Fatigue Life Prediction in Single Crystal Ni-Based Superalloy (2007)
  • Author(s): M.Sakaguchi
  • Organizer: 6th Japan-China Bilateral Symposium on High Temperature Strength of Materials
  • Place of Presentation: 宮城県仙台市
  • Year and Date: 2007-08-22
• [Presentation] Hybrid Composite Model for High-Temperature Fatigue Life Prediction in Single Crystal Ni-Based Superalloy (2007)
  • Author(s): Motoki SAKAGUCHI and Masakazu OKAZAKI
  • Organizer: 6th Japan-China Bilateral Symposium on High Temperature Strength of Materials
  • Place of Presentation: 仙台市 東北大学
  • Year and Date: 2007-08-22
• [Presentation] Cluster-Methodを用いた単結晶Ni基超合金の微細組織形態に対する定量評価 (2007)
  • Author(s): 阪口基己
  • Organizer: 日本材料学会第56期学術講演会
  • Place of Presentation: 愛知県名古屋市
  • Year and Date: 2007-05-20
• [Presentation] Cluster-Methodを用いた単結晶Ni基超合金の微細組織形態に対する定量評価 (2007)
  • Author(s): 阪口基己, 林弘明, 岡崎正和
  • Organizer: 日本材料学会 第56期学術講演会
  • Place of Presentation: 名古屋市名古屋大学
  • Year and Date: 2007-05-20
• [Presentation] 超合金摩擦圧接異材継手の熱機械的疲労強度特性評価 (2007)
  • Author(s): 佐野篤史, 阪口基己, 岡崎正和, 関原傑
  • Organizer: 日本材料学会 第56期学術講演会
  • Place of Presentation: 名古屋市 名古屋大学
  • Year and Date: 2007-05-20