Paper Title:

Effect of Sc on Microstructures and Corrosion Properties of AZ91

Periodical Materials Science Forum (Volumes 546 - 549)
Main Theme Progress in Light Metals, Aerospace Materials and Superconductors
Edited by Yafang Han et al.
Pages 139-142
DOI 10.4028/
Citation Su Juan Yao et al., 2007, Materials Science Forum, 546-549, 139
Online since May 2007
Authors Su Juan Yao, Dan Qing Yi, Sheng Yang, X.H. Cang, W.X. Li
Keywords AZ91 Alloy, Corrosion Property, Microstructure, Scandium
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The microstructures and corrosion properties of AZ91 magnesium alloy with trace additions of Sc were investigated. The microstructures were observed by OM and SEM, and the corrosion properties were studied by electrochemical technique. The results show that the alloys with Sc form a second-phase Al3Sc, the grains become finer with the increasing content of Sc and the microstructure is the finest when Sc content up to 0.6%, the corrosion resistant of alloy combining with Sc is improved.