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Article

Hot Deformation Treatment of Grain-Modified Mg–Li Alloy

1
Department of Engineering Materials and Biomaterials, Faculty of Mechanical Engineering, Silesian University of Technology, 44-100 Gliwice, Poland
2
Center of 3D Printing Protolab, Department of Machining, Assembly and Engineering Technology, Faculty of Mechanical Engineering, VSB Technical University Ostrava, 17. listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic
*
Author to whom correspondence should be addressed.
Materials 2020, 13(20), 4557; https://doi.org/10.3390/ma13204557
Received: 15 September 2020 / Revised: 9 October 2020 / Accepted: 12 October 2020 / Published: 14 October 2020
(This article belongs to the Special Issue Progress in Plastic Deformation of Metals and Alloys)
In this work, a systematic analysis of the hot deformation mechanism and a microstructure characterization of an as-cast single α-phase Mg–4.5 Li–1.5 Al alloy modified with 0.2% TiB addition, as a grain refiner, is presented. The optimized constitutive model and hot working terms of the Mg–Li alloy were also determined. The hot compression procedure of the Mg–4.5 Li–1.5 Al + 0.2 TiB alloy was performed using a DIL 805 A/D dilatometer at deformation temperatures from 250 °C to 400 °C and with strain rates of 0.01–1 s−1. The processing map adapted from a dynamic material model (DMM) of the as-cast alloy was developed through the superposition of the established instability map and power dissipation map. By considering the processing maps and microstructure characteristics, the processing window for the Mg–Li alloy were determined to be at the deformation temperature of 590 K–670 K and with a strain rate range of 0.01–0.02 s−1. View Full-Text
Keywords: magnesium alloy; hot compression test; flow stress; microstructure evolution; constitutive model; processing map magnesium alloy; hot compression test; flow stress; microstructure evolution; constitutive model; processing map
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MDPI and ACS Style

Król, M.; Snopiński, P.; Pagáč, M.; Hajnyš, J.; Petrů, J. Hot Deformation Treatment of Grain-Modified Mg–Li Alloy. Materials 2020, 13, 4557. https://doi.org/10.3390/ma13204557

AMA Style

Król M, Snopiński P, Pagáč M, Hajnyš J, Petrů J. Hot Deformation Treatment of Grain-Modified Mg–Li Alloy. Materials. 2020; 13(20):4557. https://doi.org/10.3390/ma13204557

Chicago/Turabian Style

Król, Mariusz, Przemysław Snopiński, Marek Pagáč, Jiří Hajnyš, and Jana Petrů. 2020. "Hot Deformation Treatment of Grain-Modified Mg–Li Alloy" Materials 13, no. 20: 4557. https://doi.org/10.3390/ma13204557

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