Effect of Mechanical Vibration on the Kinetics of Dewatering and Forming the Structure of ТiН₂ Powder Compacts during Electron Beam Sintering

Abstract

Effect of mechanical vibrations on the structure formation and mechanical properties of compacts during electron beam sintering was investigated. Using optical microscopy, continuous indentation, X-ray diffraction, and X-ray analyzes, it was established that the superposition of mechanical vibrations leads to a decrease of the average titanium grain size by a factor of 1.5–2 and promote formation of the compression residual stresses in the material of sintered titanium compact. Due to the stresses, greater density, and smaller grains in the compacts sintered with mechanical vibrations, their ductility and compressive resistance were higher than those of the compacts sintered with no mechanical vibrations.