稀土元素改善铝-硅合金铸造组织的研究
Abstract
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。
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Key words
aluminum-silicon alloy,rare earth,structure
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