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Metals 2019, 9(2), 186;

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

Department of Mechanical and Industrial Engineering, Norwegian University of Science and Technology–NTNU, Trondheim N-7491, Norway
Institute of Advanced Technologies, Togliatti State University, 445020 Togliatti, Russia
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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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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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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