Refining mechanism of yttrium on primary α-Al in semi-solid Al alloy

金属学报(英文版), 2010, 23(4): 277-284.

^1, , ^2, , ^3,

1.Faculty of Mechanical and Electronic Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China;Jiangxi Nonferrous Metal Processing Engineering Research Center,Ganzhou 341000,China

2.Jiangxi Nonferrous Metal Processing Engineering Research Center,Ganzhou 341000,China;Engineering Institute,Jiangxi University of Science and Technology,Ganzhou 341000,China

3.Faculty of Mechanical and Electronic Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China

基金项目: the Natural Science Foundation of Jiangxi Province(0650047) the Science and Technology Program of the Education Department of Jiangxi Province(GJJ09229 GJJ10470)

Refining mechanism of yttrium on primary α-Al in semi-solid Al alloy

Zheng LIU ^1, , Yongmei HU ^2, , Xiaomei LIU ^3,

2.Jiangxi Nonferrous Metal Processing Engineering Research Center,Ganzhou 341000,China;Engineering Institute,Jiangxi University of Science and Technology,Ganzhou 341000,China

3.Faculty of Mechanical and Electronic Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China

Keywords： Semi-solid

Semi-solid A17Si0.3Mg alloy slurry,which is grain-refined by yttrium,is manufactured by low temperature pouring.The effects of grain-refined by yttrium on the morphology and the grain size of the primary α-Al in semi-solid A17Si0.3Mg alloy are researched.The results indicate that semi-solid A17Si0.3Mg alloy with particle-like and rosette-like primary α-Al can be prepared by low temperature pouring from liquid A17Si0.3Mg alloy grain-refined by yttrium.The grain size and particle morphology of primary α-Al in A17Si0.3Mg alloy are markedly improved by 0.5 wt pct Y.The refining mechanism of Y on the morphology and the grain size of the primary α-Al in semi-solid A17Si0.3Mg alloy are delved.

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Refining mechanism of yttrium on primary α-Al in semi-solid Al alloy

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