PURPOSE:To produce a sintered Al alloy body having excellent plastic workability and high production efficiency by sintering and extruding Al alloy powder contg. a specific amt. of Si to form a core part, and cladding the same with an Al alloy like a sleeve. CONSTITUTION:A plate 3 consisting of Al or an Al alloy is set in an extrusion container 2 set in a die 1 and Al alloy powder 4 contg. 13-30wt% Si is loaded therein under heating. A ram 5 is then lowered to press the powder thereby compressing the loosely packed powder 4 and sintering thoroughly the powder 4. The plate 3 is extruded in succession to the above to clad uniformly the sintered body with the plate 3 like a sleeve, whereby the sintered Al body wherein a core part 8 and an extruded layer 7 are coupled densely in one body is obtd. It is possible to incorporate 0.5-5.0wt% Cu and 0.2-1.5wt% Mg in the core part according to need.
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