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俄罗斯专利RU2327755中公布了一种发动机活塞用Al合金材料。该合金的化学成分的质量百分数为:9.0%~11.0%Si,0.7%~1.1%Cu,0.15%-0.25%Mg,0.15%-0.3%Mn,0.05%-0.1%Y,0.05%-0.1%Sr或La,0.7%-1.5%Zn,0.03%-0.07%B,0.05%~0.1%Ag,