Gilchuk A. Phase formations and microstructure features in the Ni-Ti, Cu-Al, Ni-Mn-Ga based alloys obtained by spark erosion and spark plasma sintering methods.

In this thesis the dependences of spark eroded particles elemental composition on its sizes were statistically proved. Spark eroded particles evaporation models were developed and successfully tested. The methodology of statistically significant local elemental analysis of individual micron and submicron sized objects was developed. The relationships between the shape memory alloys state diagrams and in situ rapid quenched particle microstructure were investigated. The possibility of dissolved gas influence on the spark eroded alloys morphology was discovered. The possibility of shape memory materials superfast consolidation retaining intense martensitic transformation was proved. The influence of alloy particles annealing in hydrogen on the nature of consolidation was study. The impact of microstructure refinement on mechanical properties of the consolidated from micron sized particles shape memory alloys was demonstrated.