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High-Speed Superplastic Forging of High-Strength Light Alloys

Research Project

Project/Area Number 04650629
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 金属加工(含鋳造)
Research InstitutionNAGOYA UNIVERSITY

Principal Investigator

ISHIKAWA Takashi  NAGOYA UNIVERSITY, FACULTY OF ENGINEERING, ASSOCIATE PROFESSOR, 工学部, 助教授 (60115524)

Co-Investigator(Kenkyū-buntansha) YUKAWA Nobuki  NAGOYA UNIVERSITY, FACULTY OF ENGINEERING, ASSISTANT PROFESSOR, 工学部, 助手 (10202392)
Project Period (FY) 1992 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1993: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1992: ¥1,400,000 (Direct Cost: ¥1,400,000)
Keywordssuperplastic material / forging / mechanical alloying / aluminium alloy / mechanical press / fine grain size / strain rate / TEM microstructure
Research Abstract

Al-Cu-Mg and Al-Cu-Mg-Zn alloys are made by mechanical alloying process. The influence of the condition of mechanical alloying, compaction and extrusion on the superplastic behavior and microstructure of the material are investigated. Upset and spike forging are conducted by a hydraulic press (low speed) and mechanical press (high speed). The grain size isn't affected by mechanical alloying time when mechanical alloying time becomes long to some extent but there is the most suitable mechanical alloying time for superplastic elongation. The grain size becomes fine according to decrease of extrusion temperature and the fine grain is stable after the heat treatment and tensile test are carried out. The superplastic elongation of mechanically alloyed material becomes large according to the decrease of grain size. The material developed is suitable in the actual use because its tensile strength at room temperature is very high and it shows superplastic elongation in as high speed as mechanical press. The mechanism of high speed superplastic deformation is discussed by using finite element analysis. Forging limit of these materials is very high when high speed mechanical press is used.

Report

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

    (8 results)

All Other

All Publications (8 results)

  • [Publications] 石川孝司、加藤雅巳、湯川伸樹、神馬敬: "メカニカルアロイング法で作製したAl合金の超塑性変形と微細組織" 軽金属. 43. 269-274 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.Ishikawa,M.Kato,N.Yukawa,T.Jimma: "Modeling of Superplastic Deformation of Mechanically Alloyed Aluminum Alloy" Proc.1st International Conference on Processing Materials for Properties. 1. 725-728 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.Ishikawa, M.Kato, N.Yukawa, T.Jimma: "Superplastic Behavior and Mirostructure of Mechanically Alloyed Al-Cu-Mg alloy" Journal of Japan Institute of Light Metals. vol.43. 269-274 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.Ishikawa, M.Kato, N.Yukawa, T.Jimma: "Modeling of Superplastic Deformation of Mechanically Alloyed Aluminum Alloy" Proc. 1st International Conference on Processing Materials for Properties. 725-728 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 石川孝司: "メカニカルアロイング法で作製したAl合金の超塑性変形と微細組織" 軽金属. 43. 269-274 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] T.Ishikawa: "Modeling of Superplastic Deformation of Mechanically Alloyed Aluminum Alloy" Proc.1st International Conference on Processing Materials for Properties. 1. 725-728 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 石川 孝司,加藤 雅巳 湯川 伸樹,神馬 敬: "メカニカルアロイング法で作製したAl合金の超塑性変形と微細組織" 軽金属. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] Takashi Ishikawa,Masami Kato,Nobuki Yukawa and Takashi Jimma: "MODELING OF SUPERPLASTIC DEFORMATION OF MECHANICALLY ALLOYED ALUMINUM ALLOY" Proceedings of PMP93. (1993)

    • Related Report
      1992 Annual Research Report

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

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