Raspredelenie azota, titana i alyuminiya mezhdu nitridami i tverdym rastvorom v stalyah tipa ATYu

Abstract

Quantitative data on the distribution of nitrogen, titanium and aluminum between nitrides and solid solution have been established in ATU steels. The optimal amount of titanium in 20ATU steel was determined, which leads to the best interfacial distribution of nitride-forming elements (N, Al, Ti) under hot rolling conditions. For the most complete binding of nitrogen to AlN nitrides, the amount of aluminum in 20ATU steel should be ≥40 10-3 wt. %. To obtain fine nitrides and maintain a sufficiently high fluidity of steel 20ATU optimal content of aluminum should be (40-60) 10-3 wt. %. It is recommended to subject ATU type steels to heat treatment at optimal temperature and time Keywords: Carbon, low-alloy steels, nitrogen, titanium, aluminum, interfacial distribution