|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Advanced Real Time Imaging
||Tension Compression Asymmetry and Plastic Anisotropy in Mg Single Crystal Response Evaluated Using Micromechanical Tests
||Skye Supakul, Manish Jain, Bin Li, Siddhartha Pathak
|On-Site Speaker (Planned)
At the macroscale, pure single crystal magnesium is known to exhibit distinct plastic anisotropy and compression-tension asymmetry. However, this anisotropic behavior at the microscale is less well understood, which this work aims to accomplish. We examined the local mechanical response in individual grains of a polycrystalline Mg sample in two perpendicular directions i.e. along c-axis  and a-axis 〈2 ̅1 ̅1 0〉, respectively, to investigate their plastic anisotropy. Both microcompression and microtensile tests were performed on these grain orientations to validate the tension-compression asymmetry. Tests on the near c-axis orientation demonstrate asymmetry with compression exhibiting a slip dominated response, while in tension, the response is dominated by a mixture of slip and twin deformation. In strictly microcompression tests, anisotropy is seen with a slip dominated response on the near c-axis orientation, while a mix of slip and twin dominated responses is seen on the near a-axis orientation.
||Mechanical Properties, Magnesium, Characterization