PRODUCTION OF WEAR RESISTANT ALUMINUM ALLOY FOR EXTRUSION AND WEAR RESISTANT ALUMINUM ALLOY MATERIAL

摘要

PURPOSE: To provide the method for producing a wear resistant aluminum alloy for extrusion excellent in mechanical workability and hot workability and suitable as the material for sliding parts and to provide the method for producing the same alloy material. ;CONSTITUTION: A wear resistant aluminum alloy for extrusion having a compsn. contg. 13.5 to 15% Si, 1.5 to 4% Cu, 0.2 to 1.0% Mg, 0.2 to 0.6% Mn, 1.0 to 3.0% Ni, ≤1% Fe and 0.005 to 0.05% P, furthermore contg. one or two kinds of 0.05 to 0.3% Cr and 0.05 to 0.25% Zr and moreover contg., at need, ≤0.1% Ti and ≤0.005% B is obtd. This aluminum alloy molten metal is subjected to semicontinuous casting, and the aluminum alloy ingot is subjected to homogenizing treatment at 460 to 520°C for ≥2hr and is thereafter subjected to extrusion at 400 to 490°C at ≥6 extrusion ratio. Thus, the product high in reliability is obtd.;COPYRIGHT: (C)1995,JPO