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Metals 2019, 9(2), 186; https://doi.org/10.3390/met9020186

High Performance Fine-Grained Biodegradable Mg-Zn-Ca Alloys Processed by Severe Plastic Deformation

1
Department of Mechanical and Industrial Engineering, Norwegian University of Science and Technology–NTNU, Trondheim N-7491, Norway
2
Institute of Advanced Technologies, Togliatti State University, 445020 Togliatti, Russia
3
Lobachevsky State University of Nizhni Novgorod, 603950 Nizhnij Novgorod, Russia
*
Author to whom correspondence should be addressed.
Received: 29 November 2018 / Revised: 25 January 2019 / Accepted: 1 February 2019 / Published: 5 February 2019
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Abstract

The tensile strength, fatigue, and corrosion fatigue performance of the magnesium alloy ZX40 benefit strongly from hybrid deformation processing involving warm equal-channel angular pressing (ECAP) at the first step and room temperature rotary swaging at the second. The general corrosion resistance improved as well, though to a lesser extent. The observed strengthening is associated with a combined effect of substantial microstructure refinement down to the nanoscale, reducing deformation twinning activity, dislocation accumulation, and texture transformation. The ultimate tensile strength and the endurance limit in the ultrafine-grained material reached or exceeded 380 and 120 MPa, respectively, which are remarkable values for this nominally low strength alloy. View Full-Text
Keywords: magnesium alloys; processing; microstructure; mechanical properties; fatigue magnesium alloys; processing; microstructure; mechanical properties; fatigue
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Vinogradov, A.; Vasilev, E.; Kopylov, V.I.; Linderov, M.; Brilevesky, A.; Merson, D. High Performance Fine-Grained Biodegradable Mg-Zn-Ca Alloys Processed by Severe Plastic Deformation. Metals 2019, 9, 186.

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