Influence of Volume Fraction of Long-Period Stacking Ordered Structure Phase on the Deformation Processes during Cyclic Deformation of Mg-Y-Zn Alloys
| Autor: | Pavol Šimko, Kristián Máthis, Ke An, Gerardo Garcés, Gergely Farkas, Daria Drozdenko, Klaudia Fekete, Jan Čapek, Dong Ma |
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| Přispěvatelé: | Czech Science Foundation, Ministerio de Economía y Competitividad (España) |
| Rok vydání: | 2020 |
| Předmět: |
Twinning
Materials science EBSD General Chemical Engineering Neutron diffraction twinning 02 engineering and technology 01 natural sciences Mg-LPSO alloys deformation mechanisms Inorganic Chemistry neutron diffraction Deformation mechanisms 0103 physical sciences Ultimate tensile strength lcsh:QD901-999 General Materials Science Composite material Dislocoation slip 010302 applied physics dislocation slip 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure Deformation mechanism Volume fraction Hardening (metallurgy) lcsh:Crystallography 0210 nano-technology Crystal twinning Electron backscatter diffraction |
| Zdroj: | Crystals, Vol 11, Iss 11, p 11 (2021) Digital.CSIC. Repositorio Institucional del CSIC instname Crystals Volume 11 Issue 1 |
| ISSN: | 2073-4352 |
| DOI: | 10.3390/cryst11010011 |
| Popis: | 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. This research was funded by the Czech Science Foundation under grant 20-07384Y (D.D., G.F., K.F.); by Spanish Ministry of Economy and Competitiveness under project number MAT2016-78850-R; and by the Operational Programme Research, Development and Education, The Ministry of Education, Youth and Sports (OP RDE, MEYS) under the grant CZ.02.1.01/0.0/0.0/16_013/0001794. |
| Databáze: | OpenAIRE |
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