【摘要】 当杂质尤其是铁含量较大时,稀土元素是否还改善铝 硅合金铸造组织的问题至今未得出结论。试验表明,即使杂质铁的含量很大时,稀土元素仍可起到改善铸态组织的作用,而且可避免粗大富铁相出现。对稀土元素作用机理作了简要分析。更多还原

【Abstract】 When a large of impurity is contained in aluminum-silicon alloy, especially iron,whether rare earth can still improve the structure of aluminum-silicon alloy is no result today.The experiments show that rare earth can improve the casting structure contained coarse rich iron phase.The mechanism of rare earth’s effect is briefly discussed.更多还原