Pashynskyi V. Development of scientific bases of process of multiphase alloys structure forming which work at the cyclic thermomechanical loading

Object of research: Process of structure forming of multiphase alloys, intended for work at cyclic mechanical and thermal actions. Aim of research: increasing of performance of multiphase metallic alloys that work at conditions of cyclic thermal and mechanical loading on the base of development of scientific fundamentals of process of their structure forming taking into account laws of energy dissipation processes. Research methods: theoretical analysis of energy dissipation and absorption processes; development of methods of quantitative description of heterogeneity of structure. Experimental researches: study of processes of dissipation and absorption of energy of oscillations; research of materials structure; determination of mechanical and physical properties; ultrasonic control; fractographic research of wear and fracture surfaces. Theoretical results: Relation is set between parameters of energy of oscillations absorption, structure, properties and workings characteristics of materials; principles of control of structures with increased properties forming were developed. Practical meaning of results: the methods of express determination of microstructure and porosity parameters of hard alloy parts and titanium ingots were developed and implemented in practice; the improved processes of vacuum hot-pressing are developed and implemented in practice. An real economic effect consists 6324980 hryvnyas. Industry of results using: metallurgy and machinebuilding