AGEING INFLUENCE ON MARTENSITIC TRANSFORMATION IN DEFORMED 12Cr18-Ni10-Ti STEEL IRRADIATED WITH ALPHA-PARTICLES

Changes in both microstructure and physical-mechanical properties of 12Cr18-Ni10-Ti stainless steel implanted with helium to the concentration 10(-3)at.% after long-time ageing at 20 degrees C and short-time annealing at temperatures 550 and 900 degrees C were investigated. Peculiarities and critical parameters of the martensitic gamma ->alpha'-transformation at deformation of helium implanted stainless specimens were defined.