Wear-resistant aluminum alloy and method for working thereof

A method for working a wear-resistant aluminum-alloy which has a composition expressed by Al.sub.a Si.sub.b M.sub.c X.sub.d T.sub.e (M is at least one element selected from the group consisting of Fe, Co and Ni;

• X is at least one element selected from the group consisting of Y, Ce, La and Mm (misch metal);
• T is at least one element selected from the group consisting of Mn, Cr, V, Ti, Mo, Zr, W, Ta and Hf;
• a=50-85 atomic %, b=10-49 atomic %, c=0.5-10 atomic %, d=0.5-10 atomic %, e=0-10 atomic %,and a+b+c+d+e=100 atomic %), and which has a structure of super-saturated face centered cubic crystals and fine Si precipitates from 0.1 to 10 .mu.m in size and is free from intermetallic compounds, the method comprising subjecting the aluminum alloy to warm working at a temperature of from 300.degree. to 400.degree. C. to yield an alloy having a structure of super-saturated face centered cubic crystals and fine Si precipitates from 0.1 to 10 .mu.m in size and free from intermetallic compounds.