12th International Conference on Magnesium Alloys and their Applications (Mg 2021): Alloy Development I
Program Organizers: Alan Luo, Ohio State University; Mihriban Pekguleryuz, McGill University; Sean Agnew, University of Virginia; John Allison, University of Michigan; Karl Kainer; Eric Nyberg, Kaiser Aluminum Trentwood; Warren Poole, University of British Columbia; Kumar Sadayappan, CanmetMATERIALS; Bruce Williams, Canmetmaterials Natural Resources Canada; Stephen Yue, Mcgill University
Thursday 9:50 AM
June 17, 2021
Room: Invited III
Location: Virtual
Session Chair: Li Jin, Shanghai Jiao Tong Univ
9:50 AM Invited
Development of Corrosion Resistant Magnesium Alloy Containing Ca and Y: Bong Sun You1; Young Min Kim1; Ha Sik Kim1; 1Korea Institute of Materials Science
Corrosion behavior of Mg alloys containing Ca and Y was investigated. It was evaluated systematically depending on the casting process, heat treatment temperatures and surface coating for the wide application at different condition. In order to understand excellent corrosion resistance of Ca and Y containing alloys, we focused on the role of Y which makes the intermetallic compound easily with Al and Mn in commercial alloys during the melting. Also, it introduces field test results on several items which were made by die casting, billet making and extrusion processes for the application in railway, automotive and aerospace industries.
10:20 AM Invited
Development of Magnesium-Lithium Based Alloys for Space Applications:
The Relationship between Precipitation Hardening and Damping Capacity
: Florian Schott1; David McKeown1; Li Jin2; Mert Celikin1; 1University College Dublin; 2Shanghai Jiao Tong University
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 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.