Three-dimensional Finite Element Simulation of Deformation of Non-metallic Inclusions during Rolling Process

doi:10.3901/JME.2025.18.161

Abstract

Abstract: A three-dimensional finite element model of the rolling deformation of non-metallic inclusions in steel is established using Abaqus finite element software. The effect of inclusion type, the location of inclusions within the rolled plate, and the orientation of inclusions on the deformation and stress of the inclusions in the rolled plate is investigated. The deformation capability of inclusions in steel is characterized by the aspect ratio. The deformation capabilities of the four types of inclusions, from highest to lowest, are as follows: MnS>Al₂O₃-MnS>Al₂O₃>TiN. In Al₂O₃-MnS composite inclusions, the presence of the softer MnS phase on the outside of the Al₂O₃ reduced the equivalent plastic strain values in the steel matrix surrounding the inclusion decreasing the probability of failure in the steel matrix. Therefore, during the smelting process, inclusions can be modified by coating a layer of soft inclusions around hard inclusions to reduce the harmful impact of inclusions on the performance of the steel. When the inclusion is located at the center of the rolled plate, the residual stress in the MnS phase of the Al₂O₃-MnS composite inclusion reached its minimum average value of 121.373 MPa. When the inclusion is located at 1/4 of the thickness of the rolled plate, the inclusions underwent the most significant deformation, and the average residual stress in the MnS phase reached its maximum value of 126.853 MPa. Before rolling deformation, the larger the angle between the major axis of the ellipsoidal MnS inclusions and the rolling direction, the greater the rotation angle during the rolling process. After the rolling deformation, the length-to-diameter ratio gradually decreased from 4.15 to 1.12. The three-dimensional finite element simulation of the deformation of non-metallic inclusions during the rolling process provides a theoretical basis for controlling the composition and size of inclusions in steelmaking, as well as for determining rolling parameters.

Key words: inclusions, rolling, finite element simulation, Abaqus, stress

CLC Number:

TG335

WANG Jiali, LI Shi, HE Hongbo, WANG Yadong, ZHANG Lifeng. Three-dimensional Finite Element Simulation of Deformation of Non-metallic Inclusions during Rolling Process[J]. Journal of Mechanical Engineering, 2025, 61(18): 161-169,180.

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