Abstract
The process of mechanical alloying (MA) and spark plasma sintering (SPS) were employed to manufacture a novel TaMoNbCrTi refractory high-entropy alloy. The investigation concentrated on how variations in sintering temperatures resulted in microstructural differences, which in turn altered the mechanical properties of TaMoNbCrTi. A BCC-structured solid solution phase was formed as a result of the MA process. During further sintering, the Cr2(Ta, Nb) phase and Ti(O, N) phase precipitated from the BCC phase. The Cr2(Ta, Nb) phase volume fraction declined and transitioned from a reticular distribution to a dispersed distribution as the sintering temperature rose. Additionally, a considerable enhancement in the Ti(O, N) phase size was observed. Because of the uniform distribution of the fine precipitated phases, the TaMoNbCrTi alloy sintered at 1200 °C demonstrated superior mechanical properties.
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