Work pieces made of aluminium or its alloys, and of which at least one face presents at least one zone region resistant to wear

摘要

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%.