|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Bulk Metallic Glasses XV
||Effect of Co Addition on Martensitic Transformation in a B2-containing CuZr-based BMG Composite Revealed by In Situ Neutron Diffraction
||Gian Song, Dong Ma, Ke An, Chanho Lee, Shuying Chen, Peter Liaw, Sung-Hwan Hong, Ki Buem Kim
|On-Site Speaker (Planned)
CuZr-based bulk-metallic-glass (BMG) composites strengthened by a B2-type CuZr crystalline-phase (CP) exhibit that the plastic deformation of the CP induces martensitic transformation from the B2 to B19’, which plays a dominant role in the deformation behavior and mechanical properties. In the present study, 2.0% Co containing CuZr-based BMG composites were investigated using in-situ neutron-diffraction technique. The in-situ neutron-diffraction results reveal the continuous load transfer from the glass matrix to B2 CP and martensitic transformation from the B2 CP to B19' during the deformation of the composite. Moreover, it was found that the martensitic transformation is significantly suppressed during the deformation, as compared to other 0.5% Co-containing CuZr-based BMG composites. Based on these in-situ neutron-diffraction results, the martensitic transformation is strongly affected by the amount of the addition of Co, which determines the mechanical properties of CP-reinforced BMG composites, such as ductility and hardening capability.
||Planned: Supplemental Proceedings volume