Metal matrix composites and method of manufacture

Details Metal matrix composites and method of manufacture Metal matrix composites and method of manufacture

1985-07-17

1987-10-13

Swisher, Nancy A.

Stock material or miscellaneous articles

Composite

Of inorganic material

428379, 428386, 428388, 428389, 428450, 428469, 428902, B22F 100, B22F 900

Patent

active

046998497

ABSTRACT:
A metal matrix composite is produced by plastically deforming a metal powder, either before or after blending the powder with ceramic fibers, and compacting the mixture at elevated temperatures to achieve substantially full density. Imparting strain energy to the metal allows reduction of the compaction temperature to eliminate reaction between the fibers and the metal or degradation of the fibers. Silicon nitride fibers are thermodynamically superior for use in aluminum or titanium metal matrix composites, since silicon nitride fibers are more stable at the temperatures required for full compaction. Secondary phase reactions are avoided.

REFERENCES:
patent: 4530875 (1985-07-01), Donomoto et al.
patent: 4532182 (1985-07-01), Short et al.
patent: 4559277 (1985-12-01), Ito
patent: 4569886 (1986-02-01), Divecha et al.

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