The influence of mischmetal and tin on the microstructure and mechanical properties of Mg-6Zn-5Al-based alloys

Xiao, Wenlong, Jia, Shusheng, Wang, Jianli, Yang, Jie and Wang, Limin (2008) The influence of mischmetal and tin on the microstructure and mechanical properties of Mg-6Zn-5Al-based alloys. Acta Materialia, 56 5: 934-941. doi:10.1016/j.actamat.2007.10.042


Author Xiao, Wenlong
Jia, Shusheng
Wang, Jianli
Yang, Jie
Wang, Limin
Title The influence of mischmetal and tin on the microstructure and mechanical properties of Mg-6Zn-5Al-based alloys
Journal name Acta Materialia   Check publisher's open access policy
ISSN 1359-6454
1873-2453
Publication date 2008-03
Sub-type Article (original research)
DOI 10.1016/j.actamat.2007.10.042
Volume 56
Issue 5
Start page 934
End page 941
Total pages 8
Place of publication Oxford, United Kingdom
Publisher Pergamon
Language eng
Formatted abstract
The influence of the addition of mischmetal (MM) and tin (Sn) (total content of mischmetal and tin = 4 wt.%) on the microstructure, aging behavior and mechanical properties of Mg–6Zn–5Al-based alloys has been investigated. The microstructure of the as-cast alloys consists of α-Mg, Mg32(Al, Zn)49, Al2Mg5Zn2, Mg2Sn and Al2MMZn2 phases, and the morphology of these intermetallic phases varies with different MM and Sn additions. The hardness vs. aging time curves of all the alloys exhibit two peaks, and nanocrystalline Mg32(Al, Zn)49 and Mg2Sn precipitates are formed in the matrix. The alloys exhibit high tensile properties at 200 °C, which indicates that the high thermal stability of the Mg32(Al, Zn)49, Mg2Sn and Al2MMZn2 phases can hinder dislocation and grain-boundary sliding at elevated temperatures.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Faculty of Engineering, Architecture and Information Technology Publications
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Created: Tue, 25 Oct 2011, 12:29:18 EST by Viviane Victoria Crosthwaite on behalf of Faculty Of Engineering, Architecture & Info Tech