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Experimental and Molecular Dynamic Study of Grain Refinement and Dislocation Substructure Evolution in HSLA and IF Steels after Severe Plastic Deformation

Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, 30 Mickiewicza Ave., 30-059 Krakow, Poland
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Metals 2020, 10(9), 1122; https://doi.org/10.3390/met10091122
Received: 3 August 2020 / Revised: 18 August 2020 / Accepted: 19 August 2020 / Published: 21 August 2020
(This article belongs to the Section Metal Casting, Forming and Heat Treatment)
In this study, large-scale molecular dynamic simulations were performed to analyze the dislocation substructure interaction with various types of obstacles present in microalloyed steels during severe plastic deformation. Specifically, fully functional numerical models of the atomic upsetting test were developed, with particular emphasis on the presence of precipitates inside the microstructure grains. The obtained results compared with the microstructural tests, performed using Electron Backscatter Diffraction (EBSD) and Transmission Electron Microscope (TEM) techniques, allowed for a more accurate assessment of the microstructure refinement mechanisms by means of the in-situ recrystallization effect in the deformed samples subjected to the multi-axis compression using the MaxStrain system (Dynamic Systems Inc., New York, NY, USA). View Full-Text
Keywords: microalloyed steel; interstitial free steel; severe plastic deformation; molecular dynamic simulation microalloyed steel; interstitial free steel; severe plastic deformation; molecular dynamic simulation
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MDPI and ACS Style

Muszka, K.; Zych, D.; Lisiecka-Graca, P.; Madej, L.; Majta, J. Experimental and Molecular Dynamic Study of Grain Refinement and Dislocation Substructure Evolution in HSLA and IF Steels after Severe Plastic Deformation. Metals 2020, 10, 1122. https://doi.org/10.3390/met10091122

AMA Style

Muszka K, Zych D, Lisiecka-Graca P, Madej L, Majta J. Experimental and Molecular Dynamic Study of Grain Refinement and Dislocation Substructure Evolution in HSLA and IF Steels after Severe Plastic Deformation. Metals. 2020; 10(9):1122. https://doi.org/10.3390/met10091122

Chicago/Turabian Style

Muszka, Krzysztof, Dawid Zych, Paulina Lisiecka-Graca, Lukasz Madej, and Janusz Majta. 2020. "Experimental and Molecular Dynamic Study of Grain Refinement and Dislocation Substructure Evolution in HSLA and IF Steels after Severe Plastic Deformation" Metals 10, no. 9: 1122. https://doi.org/10.3390/met10091122

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