Ti—Al-based heat-resistant member

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United States of America Patent

PATENT NO 9670787
SERIAL NO

14665470

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Abstract

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The present invention relates to a Ti—Al-based heat-resistant member including a Ti—Al-based alloy which includes: 28.0 mass % to 35.0 mass % of Al; 1.0 mass % to 15.0 mass % of at least one selected from the group consisting of Nb, Mo, W and Ta; 0.1 mass % to 5.0 mass % of at least one selected from the group consisting of Cr, Mn and V; and 0.1 mass % to 1.0 mass % of Si, with the balance being Ti and unavoidable impurities, in which a whole or a part of a surface of the Ti—Al-based heat-resistant member includes a hardened layer as a surface layer, the hardened layer having a higher hardness than an inside of the Ti—Al-based heat-resistant member, and the Ti—Al-based heat-resistant member has a hardness ratio (a hardness of the surface layer/a hardness of the inside) of 1.4 to 2.5.

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Patent Owner(s)

  • DAIDO STEEL CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Koyanagi, Yoshihiko Aichi, JP 12 3
Sumi, Yoshinori Aichi, JP 5 1
Takabayashi, Hiroyuki Aichi, JP 19 42

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