PRODUCTION OF ALUMINUM ALLOY MATERIAL HAVING SUPERIOR WEAR RESISTANCE

摘要

PURPOSE:To produce an Al alloy material having superior wear resistance by locally melting the surface of an Al or Al alloy base material together with B to form a hard alloyed layer contg. an Al-B intermetallic compd. crystallized in the Al matrix. CONSTITUTION:A groove 2 is cut in an Al or Al alloy base material 1 and B powder 3 fed from the outside of the base material 1 is filled into the groove 2. The surface of the base material 1 is locally melted together with the B powder 3 by irradiation with laser beams 4 to form a hard alloyed layer 5 contg. an Al-B intermetallic compd. crystallized in the Al matrix in the surface of the base material 1. The alloyed layer 5 bonds to the base material 1 in one body and does not cause exfoliation at all. An Al alloy material having superior wear resistance is obtd.