To suppress the overspecks of parts produced by using rapidly solidifying aluminum alloy powder obtained by an atomizing method as a starting raw material, and to reduce useless working.
A preliminary compact 1 obtained by compacting the atomizing powder of an Al alloy containing 10 to 40 mass% Si as the raw material is heated to a temperature in a prescribed range. Next, plastic deformation is applied only to the part requiring mechanical strength therein by an amount required for the appearance of the characteristics, and the densification of the alloy and the impartation of the shape of parts are simultaneously performed. The part with the required plastic deformation applied is provided with a structure in which the mean value of the aspect ratios of the alloy powder grains is ≥3.
HATTORI HISAO
NISHIOKA TAKAO
Next Patent: METHOD FOR SPRAYING WATER TO BLAST FURNACE TOP