Refractory high-entropy alloy reinforced by reticular multi-principal-element silicide, and preparation method and application of refractory high-entropy alloy

The invention discloses a reticular multi-principal-element silicide reinforced refractory high-entropy alloy, a preparation method and application. Si elements with different contents are added to regulate and control the microstructure of the NbMoTaW series refractory high-entropy alloy, a silicide strengthening phase distributed in a net structure is separated out in a refractory high-entropy alloy matrix of a body-centered cubic structure, and the structure can restrain expansion of cracks in the deformation stage and has excellent high-temperature stability at the same time. And after the elementary substance particles of all the elements are accurately weighed according to the composition proportion, a non-self-consumption vacuum arc furnace is used for smelting. The structure characteristics of the designed refractory high-entropy alloy can be regulated and controlled by changing the content of the added Si element, so that the purposes of regulating and controlling the performance and reducing the mat