DETERMINING THE AMOUNT OF 8-MARTENSITE DURING LOW-TEMPERATURE DEFORMATION BY A RESISTOMETRIC TECHNIQUE

摘要

We have developed a method of studying the kinetics of metastable e-martensite formation at low temperatures without interrupting the deformation process. This method is based on the sum and difference of γ-, ε-, and a-phase contributions to the electrical resistivity of the alloy. The e-martensite content can be calculated from measurements of the resistivity of these phases, the resistivity increment of the alloy under deformation, and, by using a magnetometric method, the amount of ferromagnetic a-martensite.