Castings made from aluminium and its alloys, whereof at least on

Details Castings made from aluminium and its alloys, whereof at least on Castings made from aluminium and its alloys, whereof at least on

1987-02-25

1988-06-14

Rutledge, L. Dewayne

Metal treatment

Compositions

Heat treating

148437, 148903, 148910, C22F 300

Patent

active

047509457

ABSTRACT:
Castings made from aluminum and its alloys have at least one face including at least one region of wear-resistant zones. These castings are formed by a controlled distribution of zones hardened by local melting effect. The zones, no matter what their length and shape, have a width and depth between 3 and 150 .mu.m and the surface fraction or percentage of the zones for the wear-resistant region is between 5 and 60%.

REFERENCES:
patent: 4157923 (1979-06-01), Yen et al.
patent: 4348263 (1982-09-01), Draper et al.
Research Disclosure no. 177, 17740 Surface Treatment of Hypereutectic Aluminum-Silicon Castings 1/79.

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