Friction welding of .gamma. titanium aluminide to steel body wit

Details Friction welding of .gamma. titanium aluminide to steel body wit Friction welding of .gamma. titanium aluminide to steel body wit

1993-11-12

1995-07-11

Roy, Upendra

Metal treatment

Process of modifying or maintaining internal physical...

Producing or treating layered, bonded, welded, or...

148421, F02B 3900

Patent

active

054317525

ABSTRACT:
The component comprises a body (5) composed of an alloy based on a .gamma.-titanium aluminide, a steel body (2) and a connecting piece (4) composed of a nickel-base alloy. The .gamma.-titanium aluminide body (5) and the steel body (2) are rigidly joined together by means of the connecting piece (4). The joint between the .gamma.-titanium aluminide body (5) and the connecting piece (4) is produced by friction welding. The nickel-base alloy has a nickel content of less than 65 percent by weight. This achieves the result that the friction-welding joint of the .gamma.-titanium aluminide body (5) to the connecting piece (4) can be produced at comparatively low temperatures. During the friction welding, the risk of crack formations in the embrittlement-prone .gamma.-titanium aluminide body (5) is therefore appreciably reduced.

REFERENCES:
patent: 4964564 (1990-10-01), Neal et al.
patent: 5111570 (1992-05-01), Baumgarten et al.
patent: 5262123 (1993-11-01), Thomas et al.
Nishiyama et al, 1987 Tokyo International Gas Turbine Congress, Oct. 1987, III-263.
Superalloys (ed.) E. F. Bradley ASM, 1988, pp. 33-37, 218-220.
High Temperature Aluminides and Intermetallics, S. H. Whang, et al., editors, 1990, pp. 574-577.

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