Grain Refinement of Zn-50Al Alloy through the Addition of Zn–Al-Ti-B-C Master Alloy and Melt Thermal-Rate Treatment

Abstract:

In this paper, two types of Zn-Al-Ti-B-C master alloys were produced by a two-step method and were found to have good refinement effect for Zn-50Al alloy. SEM results show that TiC and TiB2 particles act as the nucleating center of α-Al grains in Zn-50Al alloy. The presence of TiAl3-xZnx phase in the matrix of Zn-Al-Ti-B-C master alloy was found to further enhance the refinement effect. The melt thermal-rate treatment process present good grain refinement effect for Zn-50Al alloy and it was further promoted by the addition of Zn-Al-Ti-B-C master alloy into Zn-Al matrix.

• Periodical: Advanced Materials Research (Volumes 562-564)
• Pages: 238-241
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.562-564.238
• Online since: August 2012
• Authors: Z.Q Wang, D.L Yang, Z.X Yang, H.R Geng
• Keywords: Grain Refinement, Melt Thermal-Rate Treatment, TiB₂, TiC, Zn-Al Alloy

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