Modelling of Effects of Cold Work on Sigma Phase Growth Rate in Super Duplex Stainless Steel

By the modelling of the precipitation and growth behaviour of the sigma phase the quantitative effects of amounts of cold work was investigated in super duplex stainless steels. The cold work promotes sigma phase precipitation. The equation to describe the growth rate of sigma phase proposed formerly by the authors was employed. That is based on the classical nucleation theory and J-M-A-K formula.