稀土铝合金活塞安徽省冶金科研所与安徽省活塞厂共同研制的稀土铝合金活塞于1985年9月27日通过省级鉴定。该产品的机械性能明显提高,其中300℃抗拉强度达到13～15kg/mm~2;体积稳定性小于0.02%。用稀土代替三元变质剂的稀土铝硅合金比ZL108合金,具有流动性好、铸造成品率高、宏观组织和加工性 Rare Earth Aluminum Pistons Anhui Institute of Metallurgy and the Piston Factory in Anhui Province jointly developed a rare earth aluminum piston on September 27, 1985 passed the provincial appraisal. The mechanical properties of the product significantly improved, including 300 ℃ tensile strength reached 13 ~ 15kg / mm ~ 2; volume stability of less than 0.02%. Rare earth instead of ternary modifier rare earth aluminum-silicon alloy than ZL108 alloy, with good fluidity, high casting yield, macrostructure and workability