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Systematic Research on Hig-Strength and High Performance Ni-Base Superalloy Coatings for Advanced Gas Turbines.

Research Project

Project/Area Number 10555027
Research Category

Grant-in-Aid for Scientific Research (B).

Allocation TypeSingle-year Grants
Section展開研究
Research Field Materials/Mechanics of materials
Research InstitutionThe University of Tokyo (1999-2000)
Nagaoka University of Technology (1998)

Principal Investigator

OKAZAKI Masakazu  The University of Tokyo, Schoool of Engg., Assoc.Prof., 大学院・工学系研究科, 助教授 (00134974)

Co-Investigator(Kenkyū-buntansha) KAKEI Koji  Tokyo Metro. Univ., Assoc.Prof., 工学部, 助教授 (70185726)
SAKANE Masao  Ritsumeikan Univ., Schoool of Engg., Prof., 理工学部, 教授 (20111130)
KITAMURA Takayuki  Kyoto University, Schoool of Engg., Prof., 大学院・工学研究科, 教授 (20169882)
YAMADA Yasuhiro  Niigata Inst.Tech., Research Assoc., 工学部, 助手 (70291755)
TADA Yaoya  Kyoto University, Schoool of Engg., Research Assoc., 工学部, 助教授 (70243053)
Project Period (FY) 1998 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥12,500,000 (Direct Cost: ¥12,500,000)
Fiscal Year 2000: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1999: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 1998: ¥9,400,000 (Direct Cost: ¥9,400,000)
KeywordsIndustrial Gas Turbines / Coatings / Thermo-Mechanical Fatigue / Life Prediction / Medelling / Single Crystal Ni-base Superalloy / DS Superalloy / Pollycrystalline Alloys / Ni基超合金 / 単結晶 / 疲労強度
Research Abstract

Collaborative research, which cover the themo-mechanical fatigue (TMF) and isothermal low-cycle fatigue (ILCF) strengths of Ni-Base superalloys and the protective coatings at elevated temperatures, has been carried out. Based on the observations of the crack initiation, the fracture surface and the dislocation structures, the effects of the substrate alloy and the coating on the TMF and ILCF lives are presented in this paper. The correlation between the TMF and ILCF are also discussed.
The results obtained by the collaborative research are summarized as follows :
(1) The TMF lives, as well as the ILCF, were strongly dependent of the substrate alloys. The single crystal and directionally-solidified alloys and their coatings generally exhibited the most excellent properties, compared with those of the traditional pollycrystalline alloy.
(2) The observation of dislocation structures indicated that the controlling and deformation mechanisms were intrinsically different between TMF and ILCF in … More the Ni-base superalloys. Accordingly, it must be unreasonable in principle to reproduce and to estimate the TMF failure of the Ni-base superalloys by the ILCF tests.
(3) Remarkable reductions in the TMF life of the Ni-base superalloy coatings under the out-of-phase condition was found to occur, compared with that of the substrate. It was shown by the investigation of the crack density that this was due to the low ductility of the coating film at the temperatures at which the maximum tensile strain was reached in the TMF tests, resulting in severe crackings. Hence, it is essential for the TMF life prediction of Ni-base superalloy coatings to get understandings not only on the substrate but also the coating film.
(4) Regarding as the TMF failure of the coatings, attention should be paid to the results by ILCF tests which can provide us a somewhat misleading information : e.g., the TMF lives under the out-of-phase condition were significantly reduced by the coating, although the ILCF one at 900℃ was improved. Less

Report

(4 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • 1998 Annual Research Report

Research Products

(42 results)

All Other

All Publications (42 results)

  • [Publications] 岡崎正和,日浦智之,鈴木俊夫: "予損傷を受けた単結晶Ni基超合金におけるセル状変質域生成と高温疲労強度への影響"材料. 50. 94-100 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 山崎泰広,岡崎正和: "Ni基ODS合金/鋳造Ni基超合金接合体の製作と高温疲労強度"材料. 20. 144-150 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 多田直哉,大谷隆一,柴田昌宜,小林智光: "Ni基単結晶超合金CMSX-10の高温疲労における破壊プロセスの解明と表面酸化層除去のき裂発生に及ぼす効果"材料. 50. 129-136 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Masakazu OKAZAKI,: "Collaborative Research on Themo-Mechanical and Isothermal Low-Cycle Fatigue Strength of Ni-Base Superalloys and the Protective Coatings at Elevated Temperatures in Japan."Int.Conf.Creep and Fatigue,. (発表予定). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Masakazu OKAZAKI,: "Themo-Mechanical and Isothermal Low-Cycle Fatigue Strength of Ni-Base Superalloys and Protective Coatings at Elevated Temperatures.""Fourth Symp.on Thermo-Mechanical Fatigue Behavior of Materials,. (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Okazaki,T.Hiura: "EFFECT OF LOCAL CELLULAR TRANSFORMATION ON FATIGUE SMALL CRACK GROWTH IN CMSX-4 AND CMSX-2 AT HIGH TEMPERATURE.-For Refurbishment Technology-"Superalloy 2000. 505-515 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Kakehi:: "Effect of Plastic Anisotropy on Creep Strengths of Single Crystals of a Ni-Base Superalloy,"Metall.and Mater.Trans.. 31. 421-430 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] "Creep-Fatigue Small Crack Propagation of a Single Crystal Ni-Base Superalloy-Microstructural and Environmental Effect-:"Int.J.Fatigue,. 21. 79-86 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Kakehi:: "Effect of Plastic Anisotropy on Tensile Strength of Single Crystals of a Ni-Base Superalloy,"Scripta Materialia,. 27842. 197-201 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Kakehi:: "Effect of Primary and Secondary Precipitates on Creep Strength of Ni-base Superalloy Single Crystals,"Materials Science and Engineering A. A278. 135-141 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 磯部展宏,桜井茂雄: "耐熱超合金の高温低サイクル疲労き裂進展における平均応力と酸化支配型圧縮ひずみ保持効果"日本機械学会論文集,. 61. 71-77 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Kameda,T.E.Bloomer and S.Sakurai,: "Oxidation/Carbonization/Nitrization and In-Service Mechanical Property Degradation of CoCrAlY Coatings in Land-Based Gas Turbine Baldes","J.Thermal Spray,. 8. 40-49 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 岡崎正和: "ガスタービン用Ni基超合金耐食コーティング材の熱機械的疲労強度と寿命推定"まてりあ. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Masakazu OKAZAKI,M.Okamoto and Y.Harada: "Fatigue Interface Crack Propagation in Ni-Base Superalloy Protective Coatings"Fatigue of Engineering Materials and Structures,. (in-press).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Masakazu OKAZAKI,M.Okamoto and Y.Harada: "Evaluation of Adhesive Strength of Coating Film on Ni-Base Superalloy For Gas Turbine."Thermal Spray 2000. 635-644 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Masakazu Okazaki: "High Temperature Strength of Ni-base Superalloy Coatings."Science and Technology of Advanced Materials. 4(in-press). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Okazaki and T.Hiura: "Effect of Previous Damage and Local Recrystallization on High Cycle Fatigue Strength of a Single Crystal Ni-Base Superalloy (In Japanese)."J.Soc.Mater.Sci., Japan. 50. 94-100 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Tada, R.Ohtani, N.Shibata, and T.Kobayashi: "Effect of oxidation Film on High Temperature Fatigue Failure of CMSX-10 (In Japanese)."J.Soc.Mater.Sci., Japan. 50. 129-136 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Okazaki: "Thermo-Mechanical Fatigue Strength of Ni-base Superalloy Prptective Coatings (In Japanese)."J.Inst.Metal. (in press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Yamazaki and M.Okazaki: "Diffusion Bonding between ODS/Superalloy and Fatigue Strength (In Japanese)."J.Soc.Mater.Sci., Japan. 50. 144-150 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Masakazu OKAZAKI, M.Okamoto and Y.Harada: "Fatigue Interface Crack Propagation in Ni-Base Superalloy Protective Coatings."Fatigue of Engineering Materials and Structures. (in-press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Masakazu OKAZAKI: "Themo-Mechanical and Isothermal Low-Cycle Fatigue Strength of Ni-Base Superalloys and Protective Coatings at Elevated Temperatures."Fourth Symp. on Thermo-Mechanical Fatigue Behavior of Materials, ASTM. (to be appear). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Okazaki and T.Hiura: "EFFECT OF LOCAL CELLULAR TRANSFORMATION ON FATIGUE SMALL CRACK GROWTH IN CMSX-4 AND CMSX-2 AT HIGH TEMPERATURE.- For Refurbishment Technology -"Superalloy. 2000. 505-515 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Masakazu OKAZAKI, M.Okamoto and Y.Harada: "Evaluation of Adhesive Strength of Coating Film on Ni-Base Superalloy For Gas Turbine."Thermal Spray. 2000. 635-643 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Okazaki, and Y.Yamazaki: "Creep-Fatigue Small Crack Propagation of a Single Crystal Ni-Base Superalloy -Microstructural and Environmental Effect- :"Int.J.Fatigue. Vol.21. 79-86 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Kakehi: "Effect of Primary and Secondary Precipitates on Creep Strength of Ni-base Superalloy Single Crystals."Materials Science and Engineering A. A278. 135-141 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Kakehi: "Effect of Plastic Anisotropy on Creep Strengths of Single Crystals of a Ni-Base Superalloy"Metall. and Mater.Trans.A. 31A. 421-430 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] N.Isobe and S,Sakurai: "Effect of Mean Stress and Compressive Strain Hold on Low Cycle fatigue Crack Propagation at High Temperature.(In Japanese)."Trans.JSME. A-6. 71 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Kameda, T.E.Bloomer and S.Sakurai: "Oxidation/Carbonization/Nitrization and In-Service Mechanical Property Degradation of CoCrAlY Coatings in Land-Based Gas Turbine Baldes""J.Thermal Spray, ASM. 8. 40 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Masakazu Okazaki: "High Temperature Strength of Ni-base Superalloy Coatings."Science and Technologyt of Advanced Materials, 4. (in-press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Masakazu OKAZAKI: "Collaborative Research on Themo-Mechanical and Isothermal Low-Cycle Fatigue Strength of Ni-Base Superalloys and the Protective Coatings at Elevated Temperatures in Japan."Int.Conf.Creep and Fatigue. (発表予定). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Masakazu OKAZAKI: "Themo-Mechanical and Isothermal Low-Cycle Fatigue Strength of Ni-Base Superalloys and Protective Coatings at Elevated Temperatures."Thermo-Mechanical Fatigue Behavior of Materlals, ASTM. (発表予定). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] M.Okazaki: "Evaluation of Adhesive Strength of Coating Film on Ni-Base Superalloy For Gas Turbine."Proc.Int.Thermal Spray Conference, Montreal,. 635-643 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 多田直哉,大谷隆一,柴田昌宜,小林智光: "Ni基単結晶超合金CMSX-10の高温疲労における破壊プロセスの解明と表面酸化層除去のき裂発生に及ぼす効果"材料. 50. 129-136 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] K.Kakehi: "Effect of Primary and Secondary Precipitates on Creep Strength of Ni-base Superalloy Single Crystals,"Materials Science & Engineering. A278. 135-141 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 山崎泰広,岡崎正和: "Ni基ODS合金/鋳造Ni基超合金接合体の製作と高温疲労強度"材料. 50. 144-150 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 岡崎正和: "Ni基超合金IN738LC耐食コーティング材の疲労強度推定法の検討"材料. 48. 181-188 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Masakazu OKAZAKI: "High-Cycle Fatigue Failure Modeling and The Endurance Predicion of Ni-Base Superalloy Protective Coatings"Proc. Int. Gas Turbine Congress. 983-988 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 岡崎正和: "Ni基超合金IN738LC耐食コーティング材の疲労強度推定法の検討"日本材料学会第49期学術講演会. (発表予定). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] 岡崎正和: "ガスタービン用耐食コーティング皮膜の密着強度評価手法の一提案"日本機械学会総会講演会前刷. 99-1. 121-122 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Masakazu OKAZAKI: "Evaluation of Adhesive Strength of Coating Film on Ni-Base Superalloy For Gas Turbine"Proc. Int. Thermal Spray Conf.. (発表予定). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] 岡崎正和: "Ni基超合金IN738LC耐食コーティング材の疲労強度推定法の検討" 材料. 48巻. 181-188. (1999)

    • Related Report
      1998 Annual Research Report

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Published: 1998-03-31   Modified: 2016-04-21  

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