Method for predicting hot deformation resistance of ferritic stainless steel

摘要

The present invention provides a method for accurately predicting the deformation resistance in order to calculate the rolling load of hot-rolled ferrite single phase or two-phase STS409L ferritic stainless steel in which ferrite and austenite coexist at a high temperature using a tandem array-type filament rolling mill. The purpose is to provide. In order to achieve the above object, the deformation resistance prediction method for each rolling mill predicts the phase ratio of the high temperature (950 to 1050 ^° C.) austenite phase of the material immediately before finishing rolling from the component, and then the phase ratio of the austenite phase is applied to the hot deformation resistance. The technical gist of the method is to quantify the effect by the strain resistance ratio, and to predict the strain resistance under rolling conditions from the strain resistance ratio and the planar strain resistance of the ferrite single phase alloy.;Austenitic phase fraction, strain resistance ratio