Dynamic recrystallization behavior and strengthening mechanism of a novel Mo–Ti3AlC2 alloy at ultrahigh temperature

Increasing the recrystallization temperature to achieve better high-temperature performance is critical in the development of molybdenum alloys for ultrahigh-temperature applications, such as the newest generation of multitype high-temperature nuclear reactors. In this study, an innovative strategy was proposed to improve the performance of molybdenum alloys at high temperature by using the two-dimensional MAX (where M is an early transition metal, A is an A-group element and X is C or N) ceramic material Ti3AlC2. The relationships between flow stress, strain rate and temperature were studied. The microstructure, distribution of misorientation and evolution of dislocations in the Mo–Ti3AlC2 alloy were analyzed. The microscopic mechanism of the Ti3AlC2 phase in the molybdenum alloy at high temperatures was clarified. The experimental results showed that the peak flow stress of Mo–Ti3AlC2 at 1600 °C reached 155 MPa, which was 161.8