Preparation and Study of the Structure and Properties of Sintered Composite Material of the Equiatomic NiAl–CrMoCoV System

Mechanical alloying and spark plasma sintering are used to prepare a NiAl–CrMoCoV-based material containing the equiatomic contents of each of constituents. The thermodynamic simulation is performed in order to determine the equilibrium composition of the developed material. The bcc NiAl, μ, and σ phases are found to be the main phases of the material. The microstructure of the alloy is noted to be characterized by the presence of several phases, which differ in the enrichment in alloy elements. The strength of the sintered NiAl–CrMoCoV sample at room temperature and 750, 900, and 1200°C temperatures is found to be 760 and 723, 694, and 100 MPa, respectively. Young’s modulus at room and high temperatures, 750, 900, and 1200°C, is 185 and 157, 151, and less than 40 GPa, respectively.