Formation mechanism of the abnormal texture during extrusion in Mg-Y-Sm-Zn-Zr alloy

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Formation mechanism of the abnormal texture during extrusion in Mg-Y-Sm-Zn-Zr alloy. / Lyu, Shaoyuan; Xiao, Wenlong; Li, Guodong et al.
in: Journal of Alloys and Compounds, Jahrgang 821, 153477, 25.04.2020.

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

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Lyu S, Xiao W, Li G, Xia D, Huang Y, Gavras S et al. Formation mechanism of the abnormal texture during extrusion in Mg-Y-Sm-Zn-Zr alloy. Journal of Alloys and Compounds. 2020 Apr 25;821:153477. doi: 10.1016/j.jallcom.2019.153477

Bibtex

@article{be80f2b889d4410eb080f917ac1e1816,
title = "Formation mechanism of the abnormal texture during extrusion in Mg-Y-Sm-Zn-Zr alloy",
abstract = "An abnormal texture with c axis of the grains parallel to extrusion direction (ED) was found in extruded Mg–Y-Sm-Zn-Zr alloy. The mechanisms for the formation of this abnormal texture were investigated based on the dynamic recrystallization (DRX) mechanisms and deformation modes during extrusion using electron backscatter diffraction (EBSD) and a viscoplastic self-consistent (VPSC) model. The microstructure evolution during extrusion indicated that the abnormal <0001>//ED texture was dominated by DRX grains. With the strain increasing, the intensity of this texture enhanced. Based on the EBSD results analysis, discontinuous dynamic recrystallization (DDRX) played the dominated role in nucleation of the new grains at the initial stage and then continuous dynamic recrystallization (CDRX) was activated at high strain. The formation of abnormal <0001>//ED texture was attributed to the activation of slips and it could promote the rotation of c-axis of grains to ED, which contributed to the formation of <0001>//ED texture. The simulated texture predicated that the CRSS of basal slip was higher than that of pyramidal slip, which played an important role in contributing the formation of the <0001>//ED texture component.",
keywords = "Dislocation, Mg alloy, Recrystallization, Simulation, Texture, Engineering",
author = "Shaoyuan Lyu and Wenlong Xiao and Guodong Li and Dabiao Xia and Yuanding Huang and Sarkis Gavras and Norbert Hort and Ruixiao Zheng and Chaoli Ma",
year = "2020",
month = apr,
day = "25",
doi = "10.1016/j.jallcom.2019.153477",
language = "English",
volume = "821",
journal = "Journal of Alloys and Compounds",
issn = "0925-8388",
publisher = "Elsevier B.V.",

}

RIS

TY - JOUR

T1 - Formation mechanism of the abnormal texture during extrusion in Mg-Y-Sm-Zn-Zr alloy

AU - Lyu, Shaoyuan

AU - Xiao, Wenlong

AU - Li, Guodong

AU - Xia, Dabiao

AU - Huang, Yuanding

AU - Gavras, Sarkis

AU - Hort, Norbert

AU - Zheng, Ruixiao

AU - Ma, Chaoli

PY - 2020/4/25

Y1 - 2020/4/25

N2 - An abnormal texture with c axis of the grains parallel to extrusion direction (ED) was found in extruded Mg–Y-Sm-Zn-Zr alloy. The mechanisms for the formation of this abnormal texture were investigated based on the dynamic recrystallization (DRX) mechanisms and deformation modes during extrusion using electron backscatter diffraction (EBSD) and a viscoplastic self-consistent (VPSC) model. The microstructure evolution during extrusion indicated that the abnormal <0001>//ED texture was dominated by DRX grains. With the strain increasing, the intensity of this texture enhanced. Based on the EBSD results analysis, discontinuous dynamic recrystallization (DDRX) played the dominated role in nucleation of the new grains at the initial stage and then continuous dynamic recrystallization (CDRX) was activated at high strain. The formation of abnormal <0001>//ED texture was attributed to the activation of slips and it could promote the rotation of c-axis of grains to ED, which contributed to the formation of <0001>//ED texture. The simulated texture predicated that the CRSS of basal slip was higher than that of pyramidal slip, which played an important role in contributing the formation of the <0001>//ED texture component.

AB - An abnormal texture with c axis of the grains parallel to extrusion direction (ED) was found in extruded Mg–Y-Sm-Zn-Zr alloy. The mechanisms for the formation of this abnormal texture were investigated based on the dynamic recrystallization (DRX) mechanisms and deformation modes during extrusion using electron backscatter diffraction (EBSD) and a viscoplastic self-consistent (VPSC) model. The microstructure evolution during extrusion indicated that the abnormal <0001>//ED texture was dominated by DRX grains. With the strain increasing, the intensity of this texture enhanced. Based on the EBSD results analysis, discontinuous dynamic recrystallization (DDRX) played the dominated role in nucleation of the new grains at the initial stage and then continuous dynamic recrystallization (CDRX) was activated at high strain. The formation of abnormal <0001>//ED texture was attributed to the activation of slips and it could promote the rotation of c-axis of grains to ED, which contributed to the formation of <0001>//ED texture. The simulated texture predicated that the CRSS of basal slip was higher than that of pyramidal slip, which played an important role in contributing the formation of the <0001>//ED texture component.

KW - Dislocation

KW - Mg alloy

KW - Recrystallization

KW - Simulation

KW - Texture

KW - Engineering

UR - http://www.scopus.com/inward/record.url?scp=85077059301&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2019.153477

DO - 10.1016/j.jallcom.2019.153477

M3 - Journal articles

AN - SCOPUS:85077059301

VL - 821

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

M1 - 153477

ER -

DOI