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JOINT STUDY ON THE DEVELOPMENT OF Ni-Al-Ti BASE AUPERALLOYS

Research Project

Project/Area Number 04044023
Research Category

Grant-in-Aid for international Scientific Research

Allocation TypeSingle-year Grants
SectionJoint Research
Research InstitutionTOHOKU UNIVERSITY

Principal Investigator

ISHIDA Kiyohito (1993-1994)  FACULTY OF ENGINEERING,TOHOKU NIVERSITY, 工学部, 教授 (20151368)

西沢 泰二 (1992)  東北大学, 工学部, 教授 (60005212)

Co-Investigator(Kenkyū-buntansha) AGREN J.  DIV.PHYS METALL., ROYAL INSTITUTE OF TECHNOLOGY, 金属系, 教授
INDEN G.  MAX-PLANCK-INSTITUTE FOR STEEL RESEARCH, 鉄鋼研究所, 教授
SAUNDERS N.j.  THERMOTECH LTD, (連合王国), 代表
MIODOWNIK A.p.  DEPT.OF MAT.SCI.& ENG., UNIVERSITY OF SURREY, 材料系, 教授
OHNUMA I.  FACULTY OF ENGINEERING,TOHOKU NIVERSITY, 工学部, 助手 (20250714)
貝沼 亮介  東北大学, 工学部, 助手 (20202004)
大谷 博司  東北大学, 工学部, 助手 (70176923)
OHTANI H.  FACULTY OF ENGINEERING,TOHOKU NIVERSITY
KAINUMA R.  FACULTY OF ENGINEERING,TOHOKU NIVERSITY
J.AGREN  王立工科大学, 金属系 (スウェーデン), 教授
G.INDEN  マックスプランク研究所, 鉄鋼研究所 (ドイツ), 教授
N.J.SAUNDERS  (株)サーモテク (連合王国), 代表
A.P.MIODOWNI  サレー大学, 工学部 (連合王国), 教授
J Agren  王立工科大学(スウェーデン), 金属系, 教授
G Inden  マックスプランク研究所(ドイツ), 鉄鋼研究所, 教授
N J Saunders  Thermo Tech(株)(連合王国), 社長
A P Miodowni  サレー大学(連合王国), 工学部, 教授
石田 清仁  東北大学, 工学部, 助教授 (20151368)
Project Period (FY) 1992 – 1994
Project Status Completed (Fiscal Year 1994)
Budget Amount *help
¥10,300,000 (Direct Cost: ¥10,300,000)
Fiscal Year 1994: ¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 1993: ¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 1992: ¥3,500,000 (Direct Cost: ¥3,500,000)
KeywordsNi-base superalloy / Intermetallic compounds / Phase equilibria / Heusler phase / Ordered phase / Phase diagram / Heat-resistant alloy / Microstructural control / ホイスラー相
Research Abstract

To develop a new type of beta (NiAl : B2) -base superalloy, phase equilibria in the Ni-Al base systems have been investigated and some microstructural controls based on the information of the phase equilibria have been performed. The results obtained are summarized as follows.
1, Phase Equilibria in the Ni-Al Base Systems
The phase equilibria among the beta, gamma (A1), gamma' (L1_2), beta' (L2_1) and eta (D0_<24>) phases in the Ni-Al-Ti, Ni-Al-Fe, Ni-Al-Co and Ni-Al-Ti-base systems were determined mainly by diffusion couple experiment. Thermodynamic analysis and computer calculation of phase diagrams of the Ni-Al, Ni-Ti, Ni-Al-Ti, and Ni-Al-Fe systems were also carried out.
2, Microstructural Control
gamma+beta, gamma'+beta and gamma+gamma'+beta multi-phase alloys were obtained by a conventional thermomechanical treatment through the microstructural control. In the Ni-Al-Fe and Ni-Al-Co systems where martensitic transformation occurs in the beta phase, three types of beta+gamma' structure … More s i.e.blocky, fine lamellar and widmanstatten structures, can be obtained.
3, Mechanical Properties of Multi-Phase Alloys
(1) gamma+beta two-phase alloys ; the introduction of gamma phase improves the ductility drastically and exhibits a good tensile properties at room temperature. This type of alloys shows an excellent oxidation resistance, while high-temperature strength decreases with increasing temperature over 600゚C.
(2) gamma+beta two-phase alloys ; the alloys with the lamellar structure show an excellent mechanical properties at room temperature. The high-temperature strength is slightly higher than that of the gamma+beta two-phase alloy.
(3) gamma'+beta+beta' three-phase alloys ; Ni- (15-25) Al- (7-15) Ti base three-phase alloys exhibit an excellent strength higher than that of some practical superalloys at the temperatures below 700゚C,while the increase in ductility is necessary for the practical use.
It is concluded from the present study that the Ni-Al base superalloys with the beta matrix have sufficient oxidation resistance and exhibit strength higher than many practical superalloys at the temperatures below 700゚C. Less

Report

(3 results)
  • 1994 Final Research Report Summary
  • 1993 Annual Research Report
  • 1992 Annual Research Report
  • Research Products

    (20 results)

All Other

All Publications (20 results)

  • [Publications] H.Ohtani: "Thermodynamic Databases for Alloy Phase Diagrams" Trans.Met.Res.Soc.Jpn.9. 199-204 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] R.Kainuma: "Hot-workability and Mechanical Properties of β+γ Co-Ni-Al-Cr Base Alloys" Proc.3rd Japan International SAMPE Symp.1410-1415 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] C.C.Jia: "Partition of Alloying Elements between γ(A1),γ(L12) and β(B2) Phases in Ni-Al Base Systems" Metall.Mater.Trans.25A. 473-484 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] C.C.Jia: "Partition of Alloying Elements between γ(A1) and η(DO24) Phases in the Ni-Ti Base Systems" Experimental Methods of Phase Diagram Determination,TMS. 31-38 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] K.Ishida: "Development of Ductile NiAl(B2)-Base Alloys by Microstructural Control" Proc.Symp.on Mechanical Properties and Phase Transformations of Multi-Phase Intermetallic Alloys,TMS,発表予定. (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 石田清仁: "材料における機能の発現と状態図" 材料開発・設計における状態図の基礎と応用、日本金属学会. 72-82 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] H.Ohtani: "Thermodynamic Databases for Alloy Phase Diagrams" Trans.Met.Res.Soc.Jpn.9. 199-204 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] R.Kainuma: "Hot-workability and Mechanical Properties of beta+gamma Co-Ni-Al-Cr Base Alloys" Proc.3rd Japan International SAMPE Symp.1410-1415 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] C.C.Jia: "Partition of Alloying Elements between gamma (A1), gamma' (L1_2)and beta (B2) Phases in Ni-Al Base Systems" Metall.Mater.Trans. 25A. 473-484 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] C.C.Jia: "Partition of Alloying Elements between gamma (A1)and eta (DO_<24>) Phases in the Ni-Ti Base Systems" Experimental Methods of Phase Diagram Determination, TMS. 31-38 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] K.Ishida: "Development of Ductile NiAl (B2) -Base Alloys by Microstructural Control" Proc.Symp.on Mechanical Properties and Phase Transformations of Multi-Phase Intermetallic Alloys. (Happyo yotei). (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] K.Ishida: "Phase Diagrams in the Functional Materials" Fundamental Aspects and Applications of Phase Diagram in the Development and Design of Materials, The JIM Seminar. 71-82 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] R.Kainuma: "Microstructure,Hot-workability and Mechanical Properties of β+γ Co-Ni-Al-Cr Base Alloys" Proc.Japan International SAMPE Symposium. 1410-1415 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] C.C.Jia: "Partition of Alloying Elements Between γ,γ' and β Phases in Ni-Al-X Systems" Metallurgical Transactions. (発表予定).

    • Related Report
      1993 Annual Research Report
  • [Publications] C.C.Jia: "Partition of Alloying Elements Between γ and η Phases in Ni-Ti-X Systems" Proc.Experimental Determination of Phase Diagrams. (発表予定).

    • Related Report
      1993 Annual Research Report
  • [Publications] 石田 清仁: "新しい機能を有するNiAl基合金の組織制御" 日本金属学会会報. 32. 143-151 (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] C.C.Jia: "Partition of Alloying Elements Between γ(Al),γ'(Ll_2)and β(B2)Phass in NI-Al Base Systems" Metallurgical Transactions,A. 24A. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] H.OHTANI: "Phase Equilibria in Ni-Al-Ti System" Metallurgical Transactions,A. 24A. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] K.ISHIDA: "Partition of Alloying Elements Between γ(Al)and η(DO_<24>)phases in Ni-Ti Base Systems" Proc.Experimental Methods of Phase Diagram Determination,J.E.Morral,Ed.,TMS. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] R.Yang: "Equilibria and Microstructural Evolution in the β/β'/γ'Region of the Ni-Al-Ti System:Modeling and Experiment" Acta Metall.Mater.40. 1553-1562 (1992)

    • Related Report
      1992 Annual Research Report

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Published: 1992-04-01   Modified: 2016-04-21  

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