Influence of Temper Rolling on Tensile Property of Low Carbon Steel Sheets by Application of Hill 48 Anisotropic Yield Criterion

Abstract

Temper rolling is a fundamental process applied in steel industries to improve the tensile properties of sheet steels by eliminating discontinuous yield behaviours. Virtually evaluating the effects of temper rolling mechanics on eliminating discontinuity is still a crucial problem due to a lack of comprehensive constitutive material models that correctly describe this elimination mechanism. In this paper, modified anisotropic constitutive model based on Hill's 48 yield criterion are used for finite element analysis (FEA) of the temper rolling process. This model was applied for four different sheet thicknesses and the FEA results are compared with experimental results obtained directly from the production line. According to the results, the customized model that implements the modified anisotropic yielding criterion efficiently describes the tensile behaviour of low carbon steels following temper rolling, and it more accurately predicts the lower and upper yielding points than the isotropic yielding criterion. This model thus assists to facilitate the simulation, optimization and prediction of mechanical properties following temper rolling.

Modeling and Simulation of Steel Rolling with Microstructure Evolution: An Overview

“…The representative isotropic yield function is the Von Mises, and the anisotropic yield function is Hill-48, for their simplicity. [88][89][90] The boundary conditions for the rolling process are applied to the created geometrical model. Before application of boundary conditions, the selection between implicit or explicit analysis is important.…”

“…The representative isotropic yield function is the Von Mises, and the anisotropic yield function is Hill‐48, for their simplicity. [ 88–90 ]…”

How the skin-pass rolling reduction ratio affects the strain aging behaviour of low-carbon steel sheets

“…This yield point can be eliminated if wet-hydrogen treatment is used to remove most of the carbon and nitrogen atoms from the lowcarbon steel, producing Interstitial Free or IF steel. Another practice to eliminate the yield point elongation is to give the annealed steel a small amount of cold reduction, which is called skin-pass [1][2][3]. Skin-pass rolling is a process that is performed on thin steel sheets after cold rolling and annealing to improve the mechanical properties, eliminate the discontinuous yield phenomenon, get the appropriate roughness, achieve good flatness, and deliver precise size requirements.…”

Investigations on critical anisotropic triaxiality at the crack tip under mixed-mode (I + II) fracture

“…20 During finite element analysis of the temper rolling process, the modified anisotropic model based on Hill’s 48 yield criteria instead of isotropic yield criteria, for precise prediction of the upper and lower yield points was used. 21…”