|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Development of Magnesium-lithium Based Alloys for Space Applications: The Relationship between Precipitation Hardening and Damping Capacity
||Florian Schott, David McKeown, Li Jin, Mert Celikin
|On-Site Speaker (Planned)
For developing lighter miniaturised satellite frame structures (CubeSat), which will allow additional payload as well as more design freedom, Magnesium-Lithium (Mg-Li) based alloys were investigated to potentially replace commonly used aluminium (Al) alloys. The effect of age-hardening treatment in comparison to Al-based alloys on damping performance were analysed using Dynamic Mechanical Analysis (DMA). Dynamic cantilever bending was performed for measuring viscoelastic properties and particularly the loss factor at varying temperatures under solution-treated, age-hardened and over-aged conditions. Moreover, thermally induced precipitates were characterized using Transmission Electron Microscopy (TEM) upon age-hardening treatment conducted at 150˚C and 200˚C. A direct link between the second phase formation and viscoelastic properties of the alloys was determined.
||Magnesium, Mechanical Properties, Phase Transformations