The influence of structure on fracture toughness of Molybdenum alloys

Abstract

The thesis is devoted to a study of regularities of molybdenum alloys structure parameters influence on fracture toughness in a wide range of temperatures with consideration of fracture mechanisms on microlevel. For the study were chosen systems of molybdenum alloys of different purity (CM-10, MT, MChVP). It resulted in different tendency to the fracture mechanism like transcrystalline in case of CM-10, intercrystalline in case of MT and ductile fracture in case of MChVP. For these alloys systems the influence of grain size on mechanical behavior and fracture mechanism on micro level were studied in a wide range of temperature