Recent progress of Mg-Sn based alloys: the relationship between aging response and mechanical performance

As the lightest metallic structural materials with excellent damping capacity, good cast-ability, and high specific strength, Mg alloys have huge potential for application in many industries including aircraft, automobile, and rail traffic. However, the strength of Mg al-loys generally falls below the application benchmark and the development of high-strength Mg alloys relies on the addition of rare earth (RE) elements, which raises their cost and limits their application. Mg-Sn based alloys are promising age-hardenable RE-free Mg alloys which exhibit the potential of replacing those containing RE elements and becoming heat-resistant high-strength Mg alloys. Microstructure and mechanical proper-ties of Mg-Sn based alloys have attracted enormous research interest over the past two decades. A comprehensive review of recent advances in this field is beneficial for their development, but such a review is still unavailable. This paper reviews recent progress of Mg-Sn based alloys from the perspective of the relationship between aging response and mechanical performance, striving to provide guidance for the development of high-performance Mg-Sn based alloys. Several key aspects are discussed including aging response, room temperature strength and ductility, and tension-compression yield asymmetry.(c) 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CCBY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

Automated summary

This paper reviews recent progress of Mg-Sn based alloys from the perspective of the relationship between aging response and mechanical performance, aiming to provide guidance for the development of high-performance Mg-Sn based alloys.