On the elevated-temperature constitutive relationship and structure of an austenitic stainless steel

Abstract

During the hot deformation of stainless steels an estimation of the high-temperature flow stress will assist in the design of pass scheduling. This communication describes a method of obtaining the elevated temperature constitution relationship from which the flow stress may be calculated. It also shows that temperature variations occuring in the process should be evaluated if accurate results are required. The paper also describes the structural differences which occur when deforming at differing temperatures and strain rates. The wide variations in structures reported indicate that attention should be given to the control of structure in the industrial process.