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Evolution of Mechanical Twinning during Cyclic Deformation of Mg-Zn-Ca Alloys

1
Department of Engineering Design and Materials, Norwegian University of Science and Technology—NTNU, N-7491 Trondheim, Norway
2
Institute of Advanced Technologies, Togliatti State University, Belorusskaya str., 14, Togliatti 445667, Russia
*
Author to whom correspondence should be addressed.
Academic Editors: Victor Hugo C. de Albuquerque and João Manuel R. S. Tavares
Metals 2016, 6(12), 304; https://doi.org/10.3390/met6120304
Received: 19 October 2016 / Revised: 24 November 2016 / Accepted: 29 November 2016 / Published: 2 December 2016
The present study clarifies the complex interplay between mechanical twinning and dislocation slip during low-cycle fatigue testing of Mg-Zn-Ca alloys. Temporal details of these mechanisms are studied non-destructively by in situ monitoring of the acoustic emission (AE) response powered by a robust signal categorization. Through the analysis of AE time series, the kinetics of deformation twinning per cycle and the overall accumulation of twinning during cyclic loading is described and its effect on fatigue life is highlighted. View Full-Text
Keywords: magnesium; twinning; dislocation slip; cyclic deformation; acoustic emission magnesium; twinning; dislocation slip; cyclic deformation; acoustic emission
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Vinogradov, A.; Vasilev, E.; Linderov, M.; Merson, D. Evolution of Mechanical Twinning during Cyclic Deformation of Mg-Zn-Ca Alloys. Metals 2016, 6, 304.

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