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US 5,348,595 AGranted
Process for the preaparation of a Ti-Al intermetallic compound
AssigneeNippon Steel Corporation
InventorsToshihiro Hanamura, Ryuji Uemori, Mitsuru Tanino, Jin-ichi Takamura
Life of this patent
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Abstract
A Ti-Al intermetallic compound is prepared from a mixture of about 40 to 52 atomic % Ti, about 48 to 60 atomic % Al, and 10 to 3000 atomic ppm of at least one of P, As, Se, or Te. The mixture is melted and then solidified. The solidified product is annealed to form a uniform microstructure.
Claims14
A process for the preparation of Ti-Al intermetallic compound comprising:
- forming a mixture consisting essentially of about 40 to 52 atomic % Ti, about 48 to 60 atomic % Al, and 10 to 3000 atomic ppm of at least one element selected from a group consisting of P, As, Se and Te;
- melting said mixture to form a molten mixture;
- solidifying said molten mixture to form a solidified product;
- and
- annealing said solidified product in an inert gas atmosphere at a temperature between 900.degree. C. and 1000.degree. C. to form a uniform microstructure.
2 more elements
A process for the preparation of a Ti-Al intermetallic compound comprising:
- forming a mixture consisting essentially of about 40 to 52 atomic % Ti, about 48 to 60 atomic % Al, and 10 to 1000 atomic ppm of at least one element selected from a group consisting of P, As, Se, and Te by adding said at least one element to said Ti and Al;
- locating said mixture in a vacuum having a pressure lower than 10.sup.-6 Torr;
- replacing said vacuum with an inert gas atmosphere;
- melting said mixture under said inert gas atmosphere to form a molten mixture having a temperature of 1400.degree. C. to 1500.degree. C.;
- solidifying said molten mixture to form a solidified product;
- annealing said solidified product in an inert gas atmosphere at a temperature of 900.degree. C. to 1000.degree. C. to form a uniform microstructure.
3 more elements
A process for the preparation of a Ti-Al intermetallic compound comprising:
- forming a mixture consisting essentially of about 40 to 52 atomic % Ti, about 48 to 60 atomic % Al, and 10 to 3000 atomic ppm of at least one element selected from a group consisting of P, As, Sc and Te by adding said at least one element to said Ti and Al;
- melting said mixture to form a molten mixture;
- solidifying said molten mixture to form a solidified product;
- and
- annealing said solidified product in an inert gas atmosphere at a temperature between 900.degree. C. and 1000.degree. C. to form a uniform microstructure.
2 more elements
Dependencies are inferred from the claim text.