|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Mechanical Behavior at the Nanoscale IV
||Solution Growth of Single-crystalline Intermetallic Compounds and their Mechanical Behaviors at Small Length Scales
||Seok-Woo Lee, John T Sypek, Keith J Dusoe, Gyuho Song, Paul C Canfield, Sergey L Budko, Christopher R Weinberger
|On-Site Speaker (Planned)
Solution growth is an excellent way to grow a millimeter-sized single crystalline intermetallic compound, which has a nearly perfect stoichiometry and well-defined geometry. We grew some interesting intermetallic compounds and characterized mechanical properties by using in-situ micropillar compression test. First, we investigated superelasticity, shape memory effects, and micaceous plasticity in ThCr2Si2-type intermetallic compounds that exhibit collapsed tetragonal (cT) phase transition under c-axis compression. We performed density functional theory (DFT) calculations to understand atomic-scale mechanisms of superelasticity. Second, we studied hybrid ThCr2Si2-type intermetallic compounds that can exhibit switchable superconductivity through superelastic process. Third, we grew icosahedral Y-Cd quasicrystal and its approximant YCd6. We studied the role of translational symmetry, which allows unique plastic slip behavior in YCd6 approximant. We strongly believe that the combined efforts of solution growth, nanomechanical test, and DFT simulation provide a way to gain a fundamental understanding of unique deformation behaviors in novel intermetallic compound.
||Planned: Supplemental Proceedings volume