Titanium aluminide, cast made therefrom and method of making...

Details Titanium aluminide, cast made therefrom and method of making... Titanium aluminide, cast made therefrom and method of making...

2005-08-02

2005-08-02

Jenkins, Daniel J. (Department: 1742)

Alloys or metallic compositions

Titanium base

Aluminum containing

C148S422000, C148S671000, C148S691000, C148S442000

Reexamination Certificate

active

06923934

ABSTRACT:
TiAl alloy includes 46 to 50 at % of Al, 5 at % or less of combination of Mo, V and Si, provided that Si content is 0.7 at % or less, and Mo content satisfies an equation of −0.3x +17.5 at % or less where x represents Al (at %), and the remainder being Ti and inevitable impurities. Mo may be replaced by Fe or combination of Mo and Fe. TiAl alloy is heated to a melt, poured into a mold, and cooled at a rate of 150 to 250° C./min within a temperature range of 1500 to 1100° C. The resulting product can be used as cast. If desired, however, heat treatment such as HIP or homogenization may be performed within a temperature range of 1100 to 800° C. After the heat treatment, the melt is cooled at a rate of 100° C./min or more until room temperature.

REFERENCES:
patent: 2880087 (1959-03-01), Jaffee
patent: 5286443 (1994-02-01), Nazmy
patent: 5350466 (1994-09-01), Larsen, Jr. et al.
patent: 5429796 (1995-07-01), Larsen, Jr.
patent: 5624505 (1997-04-01), Mazur et al.
patent: 5839504 (1998-11-01), Matsuda
patent: 0469525 (1992-02-01), None
patent: 01298127 (1989-12-01), None
patent: 03219034 (1991-09-01), None
patent: 03219147 (1991-09-01), None
patent: 04285138 (1992-10-01), None
patent: 05070912 (1993-03-01), None
patent: 05070912 (1993-03-01), None
patent: 0511995 (1993-05-01), None
patent: 05178664 (1993-07-01), None
Kim, M.C. et al: “Composition and growth rate effects in directionally solidified TiAl alloys”, Material Science and Engineering, (1997), A239-240, pp. 570-576.
Kimura, M. et al: “Study on phase stability in Ti-Al-X systems at high temperatures”, Material Science and Engineering, (1992), A152, pp. 54-59.
Singh, A.K. et al: “Transforamtions in ox2 + y Titanium Aluminide Alloys Containing Molybdenum: Part I. Solidification Behavior”, Metallurgical and Materials Transactions A, (1997), 28A, pp. 1735-1743.
Singh, A.K. et al: “Transformations in ox2 + y Titanium Aluminide Alloys Containing Molybdenum: Part II. Heat Treatment”, Metallurgical and Materials Transactions A, (1997), 28A, pp. 1745-1753.
Knippscheer, S. et al: “Intermetallic TiAl (Cr,Mo,Si) Alloys for Lightweight Engine Parts. Structure, Properties and Applications”, Advanced Engineering Materials, (1999) 1,3-4, pp. 187-191.

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