|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Magnesium Alloy Development: An LMD Symposium in Honor of Karl Kainer
||Creep Resistant Mg-Mn Based Alloys for Automotive Powertrain Applications
||Mert Celikin, Mihriban Pekguleryuz
|On-Site Speaker (Planned)
Quaternary Mg-Sr-Mn-Ce alloys show high potential to be used for automotive powertrain applications. The design strategy was based on the studies on the creep behaviour of subsystems (Mg-Mn, Mg-Ce-Mn, Mg-Sr-Mn) and the role of Mn in the dynamic precipitation of fine nano-scale dispersoids. In this work, the creep resistance and the microstructural evolution of the selected compositions were investigated. The final creep strain in the quaternary Mg-Sr-Mn-Ce alloys was seen to be four times lower than the ternary Mg-Sr-Mn alloys creep tested at 200°C under 50MPa stress. The creep strengthening was mainly attributed to the dynamic co-precipitation of Mg12Ce and α-Mn phases.