中国发明专利申请公开说明书CN101,117,679中公开了成都天河动力股份有限公司研发的一种新型活塞用Al-Si合金。该合金的化学成分的质量分数为:12%~13%Si,2.5%~4%Cu,1.7%~3%Ni,0.5%~1.2%Mg,0.1%~0.2%Mn,0.15%~0.5%V,0~0.05%Zn, Chinese patent application publication specification CN101,117,679 discloses a new type of Al-Si alloy for piston developed by Chengdu Tianhe Power Co., Ltd. The chemical composition of the alloy comprises the following chemical components in percentage by mass: 12 to 13 percent of Si, 2.5 to 4 percent of Cu, 1.7 to 3 percent of Ni, 0.5 to 1.2 percent of Mg, 0.1 to 0.2 percent of Mn, 0.15 to 0.5 percent, V, 0 to 0.05% Zn,