Microstructure and Mechanical Properties of a Ag Micro-Alloyed Mg-5Sn Alloy

Microstructure and Mechanical Properties of a Ag Micro-Alloyed Mg-5Sn Alloy JMEPEG ASM International https://doi.org/10.1007/s11665-018-3433-4 1059-9495/$19.00 Microstructure and Mechanical Properties of a Ag Micro-Alloyed Mg-5Sn Alloy S.H. Huang (Submitted October 13, 2017; in revised form March 17, 2018) Effects of 1.5 wt.% Ag addition and solid solution + artificial ageing at 160 C on the microstructure and mechanical properties of a Mg-5Sn alloy have been studied. The results show that Ag addition has sig- nificantly hardened the solution-treated Mg-5Sn alloy. During the ageing process, the hardness increase rate and the strength and ductility of the Mg-5Sn alloy at each state are also improved by Ag addition. The improved strengthening behavior is primarily attributed to the refinement distribution of the Mg Sn precipitates, the enhanced precipitation process, and the synergistic strengthening effect of Mg Sn and a metastable plate DO phase formed at lower ageing temperature. For each solution-treated alloy, the strength and ductility are higher than the corresponding cast ones. Ageing further enhances the yield strength, and the ductility of the Mg-5Sn-1.5Ag alloy is also increased after ageing. The fracture surfaces of the both peak-aged alloys exhibit the characteristic of a mixture of quasi-cleavage and ductile fracture. precipitation sequence of Mg-Sn alloys during ageing treatment Keywords age hardening, Mg-Sn alloy, http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Materials Engineering and Performance Springer Journals

Microstructure and Mechanical Properties of a Ag Micro-Alloyed Mg-5Sn Alloy

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Publisher
Springer US
Copyright
Copyright © 2018 by ASM International
Subject
Materials Science; Characterization and Evaluation of Materials; Tribology, Corrosion and Coatings; Quality Control, Reliability, Safety and Risk; Engineering Design
ISSN
1059-9495
eISSN
1544-1024
D.O.I.
10.1007/s11665-018-3433-4
Publisher site
See Article on Publisher Site

Abstract

JMEPEG ASM International https://doi.org/10.1007/s11665-018-3433-4 1059-9495/$19.00 Microstructure and Mechanical Properties of a Ag Micro-Alloyed Mg-5Sn Alloy S.H. Huang (Submitted October 13, 2017; in revised form March 17, 2018) Effects of 1.5 wt.% Ag addition and solid solution + artificial ageing at 160 C on the microstructure and mechanical properties of a Mg-5Sn alloy have been studied. The results show that Ag addition has sig- nificantly hardened the solution-treated Mg-5Sn alloy. During the ageing process, the hardness increase rate and the strength and ductility of the Mg-5Sn alloy at each state are also improved by Ag addition. The improved strengthening behavior is primarily attributed to the refinement distribution of the Mg Sn precipitates, the enhanced precipitation process, and the synergistic strengthening effect of Mg Sn and a metastable plate DO phase formed at lower ageing temperature. For each solution-treated alloy, the strength and ductility are higher than the corresponding cast ones. Ageing further enhances the yield strength, and the ductility of the Mg-5Sn-1.5Ag alloy is also increased after ageing. The fracture surfaces of the both peak-aged alloys exhibit the characteristic of a mixture of quasi-cleavage and ductile fracture. precipitation sequence of Mg-Sn alloys during ageing treatment Keywords age hardening, Mg-Sn alloy,

Journal

Journal of Materials Engineering and PerformanceSpringer Journals

Published: May 29, 2018

References

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