長繊維強化Ti基複合材料の超塑性成形

  • 山田 毅
    三菱重工業株式会社名古屋航空宇宙システム製作所
  • 佐藤 広明
    三菱重工業株式会社名古屋航空宇宙システム製作所
  • 都筑 隆之
    三菱重工業株式会社名古屋航空宇宙システム製作所

書誌事項

タイトル別名
  • Superplastic Forming of Continuous Fiber Reinforced Titanium Matrix Composites
  • チョウ センイ キョウカ Tiキ フクゴウ ザイリョウ ノ チョウソセイ セイケイ

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抄録

Sprayed preforms were fabricated with Ti-4.5Al-3V-2Mo-2Fe alloy (SP-700) powder of 23∼53 μm diameter instead of conventional powder of 23∼150 μm diameter to make the microstructure of the sprayed deposit fine. SCS-6/SP-700 composite made of the improved sprayed preforms (improved spray composite) showed superplasticity in the tensile direction perpendicular to the fiber with a maximum m-value of 0.58 at 1048 K. The tensile flow stress of the improved spray composite was a little lower than that of SCS-6/SP-700 composite made of woven preforms. Tensile strength at room temperature of the improved spray composite after deformation was comparable to that of the improved spray composite before deformation. Stringer- and blade-shaped TMC part models are demonstrated to be successfully superplastic-formed. No debonding defects at fiber/matrix interface were observed in the blade-shaped model using the improved spray composite.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 65 (12), 1045-1052, 2001

    公益社団法人 日本金属学会

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