锶对铝硅合金磷变质的影响  

Effect of Strontium on Phosphorus Modification of Al-Si Alloys

作　　者：胡小琳[1] 刘相法[1] 陈海霞 赵宝银 

机构地区：[1]山东大学材料液态结构及其遗传性教育部重点实验室,山东济南250061 [2]山东滨州渤海活塞股份有限公司,山东滨州256602 [3]费县银光镁业公司,山东临沂273400

出　　处：《铸造》2006年第4期335-337,共3页Foundry

摘　　要：利用金相和电子探针微成分分析仪(EPMA)等手段研究了共晶Al-Si(ZL109)合金熔体中Sr对P变质效果的影响。结果表明:Sr的加入量小于0.175%时,对P变质没有影响。分析表明:在Al-Si合金中心仍是作为核心的AlP,其周围是Sr与P、Al、Ca、Mg生成的多元化合物,此多元化合物与初晶硅的晶格结构相似。The influence of strontium on phosphorus modification of eutectic Al-Si alloys was investigated in this article by optical microscopy and electron probe micro-analyzers （EPMA）. It has been shown that there is no effect on phosphorus modification when adding strontium level is below 0.175%. AlP still acts as the nucleating site of primary silicon and is enclosed by multiple compound which is produced by Strontium, phosphorus, aluminum, calcium and magnesium. The multiple compound has the similar lattice structure to that of primary silicon.

关 键 词：AL-SI合金 P变质 SR变质 

分 类 号：TG156.6[金属学及工艺—热处理]