Grain Refinement of Zn-50Al Alloy through the Addition of Zn-Al-Ti-C Master Alloy
作者： Z.Q. Wang , W.J. Li , Z.X. Yang , H.R. Geng , W.H. Wang
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.452-453.339
关键词:
摘要: In this paper, two types of Zn-Al-Ti-C master alloy with different Ti/C ratios were produced throug a two-step method, characterized by XRD and SEM, their refinement behaviors mechanism in Zn-50Al studied. Both the alloys remarkably reduced size α-Al grains, impeded dendritic growth promote equiaxed grains Zn-50wt.%Al alloy. The containing both TiC dditional Ti Zn-Al matrix was found to have higher ability than that containg only TiC. effect greatly enhanced as solidification temperature melt decreases. particles observed be located at center act nucleating substrate for α-Al. decrease presence additional atoms cause supercooling, which further elevate rate on grains.
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