Mechanical and Creep Properties of the Cast Magnesium Alloy

Abstract

Currently most commercial magnesium alloys are based on the Mg-Al system and it is reasonably well developed. Although the Mg-Al based alloy system has excellent castability and adequate ambient temperature mechanical properties, it shows poor creep resistance. Therefore, our group has focused on finding the way to improve the creep properties of Mg alloys. This paper presents a brief summary of the research achievements in this area recently made by AFML(Advance Functional Materials Lab in PNU, Korea). The properties of newly designed Mg alloys in our group are presented and compared with the properties of commercial A356 alloy.

Investigation on the Microstructures and Creep Properties of Mg-7~11wt. %Zn-4 wt. %Al Based Alloys

“…As a promising alloy system, Mg-Zn-Al Series alloys, especially Mg-10～12wt.%Zn-2～4wt.%Al alloys were investigated. Results show that the creep resistance of these ZA alloys containing 4wt.%Al are significantly better than those of AZ91 with comparable tensile properties, thus make them potentially good candidates for applications at elevated temperature [2,3]. However, effects of Zn content on the microstructures and properties, especially creep resistance of these ZA alloys containing 4wt.…”

Effects of Zinc and Aluminum Concentration on the Microstructure and Properties of ZA Series Mg Alloys

“…Magnesium alloys are emerging as potentially good candidates for numerous applications, especially in automotive, aerospace and electronic industry [1]. In the early 1970s, It was reported that alloys with high zinc and low aluminum(Mg-Zn-Al Series alloys) could meet the property requirements so as to be an alternative to the presently used Mg-Al based alloys [2,3].…”

Investigation on the Microstructures and Mechanical Properties of RE Containing Mg-5Zn-2Al Alloys

“…However, inferior high temperature mechanical properties of conventional Mg-Al system alloys, such as AZ91 and AM60, limit the potential utilization of these alloys in important parts due to the low melting point of the intermetallic phase β phase (Mg17Al12) in the microstructure, which is prone to soften at above 120℃ [1].…”