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	A356合金熔体中Al_2O_3夹杂对变质剂Sr的影响
	葛学元 ; 李建国 ; 谭红艳 ; 何迁 ; Ge Xueyuan ; Li Jianguo ; Tan Hongyan ; He Qian
	2010-06-10 ; 2010-06-10
关键词	A356合金 Al2O3 Sr Sr-Al-O化合物 Al2Si2Sr化合物 A356 Alloy,Alumina,Sr,Sr-Al-O Compounds,Al2Si2Sr Compounds TG27
其他题名	Influence of Alumina on Modifier Strontium in Molten A356 Alloy
中文摘要	通过XRD、SEM等分析手段研究了A356合金熔体中Al2O3夹杂与变质剂Sr之间所发生的反应及其反应机制,结果发现Sr可以与Al2O3经过一系列反应生成Sr-Al-O化合物,由此造成了Sr的损耗,生成的Sr-Al-O化合物可溶于水。在Al-Si合金熔体中加入Sr后,游离态的Sr与Si会首先生成SrSi2,而后在熔体中发生三元共晶反应,生成的Al2Si2Sr化合物呈块状或条状分布。研究还发现存在Al-Si-O化合物,它覆在Al2Si2Sr化合物表面。; The mechanism of the reactions between alumina and modifier strontium in molten A356 alloy have been investigated,by means of XRD and SEM.The results showed that there have been a series of reactions between them,forming the kind of compounds Sr-Al-O,which are water-soluble,and this led to the consumption of strontium.When adding strontium into the molten Al-Si alloys,the SrSi2 would form firstly,and then the Al2Si2Sr compound formed through ternary eutectic reaction,which appeared in the shape of both bulk and strip.The Al-Si-O compound was also found which laid over the Al2Si2Sr compound.
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/61510]
专题	清华大学
推荐引用方式 GB/T 7714	葛学元,李建国,谭红艳,等. A356合金熔体中Al_2O_3夹杂对变质剂Sr的影响[J],2010, 2010.
APA	葛学元.,李建国.,谭红艳.,何迁.,Ge Xueyuan.,...&He Qian.(2010).A356合金熔体中Al_2O_3夹杂对变质剂Sr的影响..
MLA	葛学元,et al."A356合金熔体中Al_2O_3夹杂对变质剂Sr的影响".(2010).

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