3D finite element simulation of steel quenching in order to determine the microstructure and residual stresses

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2008

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Şimşir, Caner

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In the course of thermal treatments, materials are usually subjected to continuous heating and cooling cycles during which microstructural evolution and mechanical interactions occur simultaneously at different length and time scales. Modeling of these processes necessitates dealing with inherent complexities such as large material property variations, complex couplings and boundary conditions, coupled heat and mass transfer mechanisms and phase transformations. In this study, a mathematical framework based on finite element method (FEM) capable of predicting temperature history, evolution of phases and internal stresses during heat treatment of metals and alloys was developed. The model was integrated into the commercial FEA software MSC.Marc® by user subroutines. The accuracy of the model was verified by simulating the quenching of eccentrically drilled steel cylinders. Simulation results were justified via SEM observations and XRD residual stress measurements. According to the results, the model can effectively predict the trends in the distribution of microstructure and residual stresses with a remarkable accuracy.

Subject Keywords

Mechanics of materials.

URI

http://etd.lib.metu.edu.tr/upload/12609412/index.pdf
https://hdl.handle.net/11511/17617

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

C. Şimşir, “3D finite element simulation of steel quenching in order to determine the microstructure and residual stresses,” Ph.D. - Doctoral Program, Middle East Technical University, 2008.