|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Magnesium Technology 2017
||Performance Evaluation of High-pressure Ddie-cast Magnesium Alloys
||Mark Easton, Suming Zhu, Mark Gibson, Trevor Abbott, Hua Qian Ang, Xiaobo Chen, Nick Birbilis, Gary Savage
|On-Site Speaker (Planned)
Over 90% of the magnesium alloys in commercial applications are produced by high-pressure die-casting. This paper presents our efforts in evaluating castability and properties of commercial and near-commercial magnesium alloys to demonstrate how the currently available alloys can be applied to different situations across a range of property space. For high temperature applications, i.e. 175°C and above, Mg-RE and Mg-Al-Ca based alloys have creep properties at least comparable to aluminium alloy A380 although these alloys have some challenges with casting. For moderate temperatures, Mg-Al-RE based alloys, especially AE44, are most attractive due to an excellent combination of creep resistance, strength and castability. For automotive structural applications where a good combination of strength and ductility is required, Mg-Al alloys provide the baseline, but Mg-Al-RE based alloys can provide outstanding performance with age hardening during the paintbake cycle. Therefore, high-pressure die-cast magnesium alloys hold great promise in automotive applications.