Method of determining the strain hardening of carburized elements in Ansys environment
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2016
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Abstract
The paper presents a method based on FEM analysis of determining the stress and strain hardening of elements after the thermochemical treatment. A computational algorithm, which takes into account two factors, has been suggested. Firstly, the gradient of material properties resulting from the changes in the carbon content in the surface layer after the carburizing process. Secondly, the phase transformations occurring during the hardening of the material. The proposed flowchart did not include the flow effect, which greatly reduced the computation time by eliminating tedious CFD calculations. Thanks to an original program Converter coupled with a commercial software's SimHard, SimCarb J Math Pro and Ansys the carburizing process followed by quenching in gases was modeled. In parallel to the numerical calculations the results were verified experimentally. The results of FEM analysis for the tube made of stainless EN 16CrMn5 subjected to three processes of thermochemical treatment have also been presented in the paper. The experimental results were compared with the numerical simulations and a satisfactory convergence has been achieved.
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Lipa S., Sawicki J., Wołowiec-Korecka E., Dybowski K., Kula P.: Method of determining the strain hardening of carburized elements in Ansys environment, Solid State Phenomena 240 (2016) 74-80.