Influence of Volume Fraction of Long-Period Stacking Ordered Structure Phase on the Deformation Processes during Cyclic Deformation of Mg-Y-Zn Alloys
Deformation mechanisms in extruded Mg-Y-Zn alloys with different volume fractions of the long-period stacking ordered (LPSO) structure have been investigated during cyclic loading, i.e., compression followed by unloading and reverse tensile loading. Electron backscattered diffraction (EBSD) and in s...
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| Format: | Article |
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MDPI AG
2020-12-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/11/1/11 |
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| author | Daria Drozdenko Gergely Farkas Pavol Šimko Klaudia Fekete Jan Čapek Gerardo Garcés Dong Ma Ke An Kristián Máthis |
| author_facet | Daria Drozdenko Gergely Farkas Pavol Šimko Klaudia Fekete Jan Čapek Gerardo Garcés Dong Ma Ke An Kristián Máthis |
| author_sort | Daria Drozdenko |
| collection | DOAJ |
| description | Deformation mechanisms in extruded Mg-Y-Zn alloys with different volume fractions of the long-period stacking ordered (LPSO) structure have been investigated during cyclic loading, i.e., compression followed by unloading and reverse tensile loading. Electron backscattered diffraction (EBSD) and in situ neutron diffraction (ND) techniques are used to determine strain path dependence of the deformation mechanisms. The twinning-detwinning mechanism operated in the α-Mg phase is of key importance for the subsequent hardening behavior of alloys with complex microstructures, consisting of α-Mg and LPSO phases. Besides the detailed analysis of the lattice strain development as a function of the applied stress, the dislocation density evolution in particular alloys is determined. |
| first_indexed | 2024-03-10T13:46:21Z |
| format | Article |
| id | doaj.art-3f7e61aeea0343dcbb403288b7d5a424 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T13:46:21Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-3f7e61aeea0343dcbb403288b7d5a4242023-11-21T02:36:01ZengMDPI AGCrystals2073-43522020-12-011111110.3390/cryst11010011Influence of Volume Fraction of Long-Period Stacking Ordered Structure Phase on the Deformation Processes during Cyclic Deformation of Mg-Y-Zn AlloysDaria Drozdenko0Gergely Farkas1Pavol Šimko2Klaudia Fekete3Jan Čapek4Gerardo Garcés5Dong Ma6Ke An7Kristián Máthis8Department of Physics of Materials, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Prague 2, Czech RepublicThe Czech Academy of Sciences, Nuclear Physics Institute, Hlavní 130, 250 68 Řež, Czech RepublicDepartment of Physics of Materials, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Prague 2, Czech RepublicDepartment of Physics of Materials, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Prague 2, Czech RepublicLaboratory for Neutron Scattering and Imaging, Paul Scherrer Institute, 5232 Villigen PSI, SwitzerlandNational Center for Metallurgical Research (CENIM-CSIC), Department of Physical Metallurgy, Avenida Gregorio del Amo 8, E-28040 Madrid, SpainNeutron Science Platform, Songshan Lake Materials Laboratory, Dongguan 523808, ChinaOak Ridge National Laboratory (ORNL), 1 Bethel Valley Rd, Oak Ridge, TN 37830, USADepartment of Physics of Materials, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Prague 2, Czech RepublicDeformation mechanisms in extruded Mg-Y-Zn alloys with different volume fractions of the long-period stacking ordered (LPSO) structure have been investigated during cyclic loading, i.e., compression followed by unloading and reverse tensile loading. Electron backscattered diffraction (EBSD) and in situ neutron diffraction (ND) techniques are used to determine strain path dependence of the deformation mechanisms. The twinning-detwinning mechanism operated in the α-Mg phase is of key importance for the subsequent hardening behavior of alloys with complex microstructures, consisting of α-Mg and LPSO phases. Besides the detailed analysis of the lattice strain development as a function of the applied stress, the dislocation density evolution in particular alloys is determined.https://www.mdpi.com/2073-4352/11/1/11Mg-LPSO alloysneutron diffractionEBSDdeformation mechanismsdislocation sliptwinning |
| spellingShingle | Daria Drozdenko Gergely Farkas Pavol Šimko Klaudia Fekete Jan Čapek Gerardo Garcés Dong Ma Ke An Kristián Máthis Influence of Volume Fraction of Long-Period Stacking Ordered Structure Phase on the Deformation Processes during Cyclic Deformation of Mg-Y-Zn Alloys Crystals Mg-LPSO alloys neutron diffraction EBSD deformation mechanisms dislocation slip twinning |
| title | Influence of Volume Fraction of Long-Period Stacking Ordered Structure Phase on the Deformation Processes during Cyclic Deformation of Mg-Y-Zn Alloys |
| title_full | Influence of Volume Fraction of Long-Period Stacking Ordered Structure Phase on the Deformation Processes during Cyclic Deformation of Mg-Y-Zn Alloys |
| title_fullStr | Influence of Volume Fraction of Long-Period Stacking Ordered Structure Phase on the Deformation Processes during Cyclic Deformation of Mg-Y-Zn Alloys |
| title_full_unstemmed | Influence of Volume Fraction of Long-Period Stacking Ordered Structure Phase on the Deformation Processes during Cyclic Deformation of Mg-Y-Zn Alloys |
| title_short | Influence of Volume Fraction of Long-Period Stacking Ordered Structure Phase on the Deformation Processes during Cyclic Deformation of Mg-Y-Zn Alloys |
| title_sort | influence of volume fraction of long period stacking ordered structure phase on the deformation processes during cyclic deformation of mg y zn alloys |
| topic | Mg-LPSO alloys neutron diffraction EBSD deformation mechanisms dislocation slip twinning |
| url | https://www.mdpi.com/2073-4352/11/1/11 |
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