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锡添加对硅铝合金铸锭中初晶硅枝晶宽度及回收率的影响

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Indexed by:期刊论文

Date of Publication:2016-09-20

Journal:机械工程材料

Included Journals:PKU、ISTIC、CSCD

Volume:40

Issue:9

Page Number:14-17

ISSN No.:1000-3738

Key Words:锡;初晶硅;枝晶宽度;回收率

Abstract:通过在硅铝合金熔体中添加不同原子分数(0,10%,20%,30%)的锡制备了合金铸锭,研究了锡的添加对该合金铸锭中初晶硅枝晶宽度及回收率的影响.结果表明:初晶硅枝晶宽度随着锡含量的增加而增大,当合金铸锭中硅原子分数为31.86%、锡原子分数由0增至30%时,初晶硅平均枝晶宽度由490μm增大至710μm;较低硅含量合金铸锭中的初晶硅枝晶宽度较大,锡的添加对枝晶宽度的增大效果也更明显;初晶硅的回收率随着锡含量的增加而增大,当锡原子分数由0增至30%时,实际回收率由62%增至85%.

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