Influence of volume fraction of long-period stacking ordered structure phase on the deformation processes during cyclic deformation of mg-y-zn alloys

Daria Drozdenko; Gergely Farkas; Pavol Šimko; Klaudia Fekete; Jan Čapek; Gerardo Garcés; Dong Ma; Ke An; Kristián Máthis

doi:10.3390/cryst11010011

Influence of volume fraction of long-period stacking ordered structure phase on the deformation processes during cyclic deformation of mg-y-zn alloys

Daria Drozdenko, Gergely Farkas, Pavol Šimko, Klaudia Fekete, Jan Čapek, Gerardo Garcés, Dong Ma, Ke An, Kristián Máthis

Materials Engineering

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

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.

Original language	English
Article number	11
Pages (from-to)	1-14
Number of pages	14
Journal	Crystals
Volume	11
Issue number	1
DOIs	https://doi.org/10.3390/cryst11010011
State	Published - Jan 2021

Funding

Funding: 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.

Funders	Funder number
Ministerstvo Školství, Mládeže a Tělovýchovy	CZ.02.1.01/0.0/0.0/16_013/0001794
Grantová Agentura České Republiky	20-07384Y
Ministerio de Economía y Competitividad	MAT2016-78850-R

Keywords

Deformation mechanisms
Dislocation slip
EBSD
Mg-LPSO alloys
Neutron diffraction
Twinning

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10.3390/cryst11010011

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title = "Influence of volume fraction of long-period stacking ordered structure phase on the deformation processes during cyclic deformation of mg-y-zn alloys",

abstract = "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.",

keywords = "Deformation mechanisms, Dislocation slip, EBSD, Mg-LPSO alloys, Neutron diffraction, Twinning",

author = "Daria Drozdenko and Gergely Farkas and Pavol {\v S}imko and Klaudia Fekete and Jan {\v C}apek and Gerardo Garc{\'e}s and Dong Ma and Ke An and Kristi{\'a}n M{\'a}this",

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AU - Drozdenko, Daria

AU - Farkas, Gergely

AU - Šimko, Pavol

AU - Fekete, Klaudia

AU - Čapek, Jan

AU - Garcés, Gerardo

AU - Ma, Dong

AU - An, Ke

AU - Máthis, Kristián

PY - 2021/1

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N2 - 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.

AB - 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.

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KW - Dislocation slip

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Influence of volume fraction of long-period stacking ordered structure phase on the deformation processes during cyclic deformation of mg-y-zn alloys

Abstract

Funding

Keywords

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