Mechanical Properties of Co-Based L1_2 Intermetallic Compound Co_3(Al,W)

摘要

Mechanical properties of L1_2-Co_3(Al,W) polycrystalline sample are investigated by compression testing at various temperature ranging from room temperature to 1193 K, It was found that at room temperature the 0.2 percent flow stress is 410 MPa and the compressive ductility is higher than 10 percent, whereas at 1193 K the 0.2 percent flow stress is 382 MPa and the compressive ductility is about 10 percent. Two candidates for the reaction scheme of the Co-rich region of the Co-Al-W ternary phase diagram are proposed by combining the results of microstructure observation, X-ray diffractometry and the previous report.