Structure and Mechanical Properties of Stoichiometric Ni sub 3 Al and of Ni sub 3 Al Alloyed with Boron

摘要

Purpose was to understand the mechanisms underlying the plastic flow and fracture of stoichiometric Ni sub 3 Al with (750 ppM = 0.35 at.%) and without boron. Experiments were carried out on the tensile strength of both alloys as a function of grain size (2 mu m to 1100 mu m) and temperature (77K to 1023K). Deformation structures of both alloys were examined using transmission electron microscopy, both through in-situ straining of thin foils and through post-deformation analysis of foils prepared from bulk specimens. (ERA citation 12:013758)