To provide an aluminum alloy forged wheel having toughness and high rigidity, and having high heat resistance, while having light weight.SOLUTION: An aluminum alloy forged wheel is a wheel including a hub part to which an axle is mounted, a disc part provided to a hub part periphery and a rim part provided to a periphery part of the disc, in which one or both of at least the disc part and the rim part is formed by forging a billet obtained by casting an aluminum alloy that contains Si:9.0 to 12.5 mass%, Cu:0.5 to 3.4 mass%, Mg:0.2 to 0.9 mass%, Fe:0.7 mass% or smaller, Ti:0.005 to 0.15 mass%, and any one kind of Sr, Sb, Ca, and Na containing in the range of Sr:0.01 to 0.15 mass%, Sb:0.01 to 0.20 mass%, Ca:10 to 200 mass.ppm, Na:10 to 200 mass.ppm, the balance is Al and inevitable impurities, and a metallurgical structure of one or both of the disc part and the rim part has a width of a belt-like zone in which Si particles are sparse is 20 μm or smaller, and an average particle size of eutectic silicon is 5 μm or smaller.SELECTED DRAWING: Figure 1
アルミニウム合金鍛造ホイール及びその製造方法
2021-09-29
Patent
Elektronische Ressource
Japanisch