Abstract
The load prediction model of 17%Cr-7%Ni stainless steel in cold rolling has been developed. In this model, the flow stress equations included deformation-induced martensitic transformation and the mathematical model of rolling load based on the approximate theory of Bland & Ford are considered. The volume fraction of martensite by ferrite scope was modified by X-ray diffraction method. The flow stress were investigated from the tension tests of sheets prestrained by rolling with temperature range from 20°C to 200°C, and the flow stress equations were established from parameters of the volume fraction of martensite, material temperature, equivalent strain and strain rates. The rolling load, the volume fraction of martensite and the strip temperature calculated by this load prediction model were consistent with the experimental results. By using this load prediction model, it is made clear that the rolling load and the volume fraction of martensite depends on strip temperature and rolling speed greatly.
