Research paper

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

  • LIU Zheng ,
  • LIU Xiao-Mei ,
  • HU Yong-Mei
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  • 1. Faculty of Mechanical and Electronic Engineering, Jiangxi University of Science and Technology,Ganzhou 341000, China
    2. Jiangxi Nonferrous Metal Processing Engineering Research Center, Ganzhou 341000, China
    3. Engineering Institute, Jiangxi University of Science and Technology, Ganzhou 341000, China

Received date: 2009-12-29

  Revised date: 2010-05-11

  Online published: 2010-08-11

Abstract

Semi-solid Al7Si0.3Mg 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 Al7Si0.3Mg alloy are researched. The results indicate that semi-solid Al7Si0.3Mg alloy with particle-like and rosette-like primary α-Al can be prepared by low temperature pouring from liquid Al7Si0.3Mg alloy grain-refined by yttrium. The grain size and particle morphology of primary α-Al in Al7Si0.3Mg 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 $\alpha$-Al in semi-solid Al7Si0.3Mg alloy are delved.

Cite this article

LIU Zheng , LIU Xiao-Mei , HU Yong-Mei . Refining mechanism of yttrium on primary  α-Al  semi-solid Al alloy[J]. Acta Metallurgica Sinica (English Letters), 2010 , 23(4) : 277 -284 . DOI: 10.11890/1006-7191-104-277

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