(P10-P0123)Study on mechanical properties and microstructure of HfMoNbTaTi refractory high-entropy alloy

摘要

Efficiency improving and emission reducing in turbine engines has become astrong driving force in aerospace industry. One of a feasible way is to elevate their operationtemperature. Although gas turbine engines are usually made of nickel-based alloys, it stillshows a limitation at a higher working temperature due to their melting point (1455 °C forpure nickel). Refractory high-entropy alloys (RHEAs), which generally consist of high meltingpoint elements, have attracted much attention in this field on account of its excellentperformance at elevated temperature. In this study, a new equimolar RHEA of HfMoNbTaTi withboth high melting point and high mechanical properties is fabricated and investigated.