FEATURES OF COURSE MARTENSITE TRANSFORMATION IN STEEL AT HARDENING IN THE CONSTANT MAGNETIC FIELD

Abstract

Using the method of electroresistance obtains data about course martensite transformations in steel under action of the magnetic field, formations specifying an opportunity stress-assisted martensite in temperature interval МS-МF in which superplasticity is shown. 208 Вестник ДГТУ, 2007. Т.7. №4(35)This opportunity is caused by magnetic heterogeneity austenite, presence in a paramagnetic matrix nanostrustural ensemble ferromagnetic ordering clusters which perceiving energy of an external magnetic field through magnetostrictive pressure, change fields of elastic forces in microvolumes of a nuclear lattice of a matrix, that causes to decrease in energy of formation germinal center of the critical size.