Effect of extrusion and rotary swaging on the microstructural evolution and properties of Mg-5Li-5.3Al-0.7Si alloy

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Effect of extrusion and rotary swaging on the microstructural evolution and properties of Mg-5Li-5.3Al-0.7Si alloy. / Chen, Hao; Zhang, Meng; Kong, Fanxiao et al.
In: Materials Science & Engineering A, Vol. 885, 145627, 03.10.2023.

Research output: Journal contributionsJournal articlesResearchpeer-review

Harvard

APA

Chen, H., Zhang, M., Kong, F., Li, B., Cui, X., Huang, Y., Hort, N., Willumeit-Römer, R., Xie, W., & Wei, G. (2023). Effect of extrusion and rotary swaging on the microstructural evolution and properties of Mg-5Li-5.3Al-0.7Si alloy. Materials Science & Engineering A, 885, Article 145627. https://doi.org/10.1016/j.msea.2023.145627

Vancouver

Chen H, Zhang M, Kong F, Li B, Cui X, Huang Y et al. Effect of extrusion and rotary swaging on the microstructural evolution and properties of Mg-5Li-5.3Al-0.7Si alloy. Materials Science & Engineering A. 2023 Oct 3;885:145627. doi: 10.1016/j.msea.2023.145627

Bibtex

@article{55a34f50c2f04aabaac372f3f75d5c9c,
title = "Effect of extrusion and rotary swaging on the microstructural evolution and properties of Mg-5Li-5.3Al-0.7Si alloy",
abstract = "High-strength Mg–5Li-5.3Al-0.7Si alloys were prepared by applying a combination of conventional extrusion with an extrusion ratio of 25:1 at 320 °C and subsequent rotary swaging (RS) with 0.2 mm reduction per pass in diameter at room temperature. The microstructural evolution was characterized and mechanical properties were investigated by tensile tests. The EBSD results showed that the grain size of the alloy decreased remarkably after extrusion and RS. Meanwhile, the yield strength (YS) of the as-extruded alloy was significantly improved from 161 MPa to 301 MPa by 2 passes RS, with only a slight reduction in ductility. The grain refinement during RS should be attributed to the activation of twins and continuous dynamic recrystallization (CDRX). The texture evolution during RS was investigated by EBSD. The number of grains with <0001> parallel to extrusion direction (ED) decrease significantly after RS. These grains are subjected to multi-directional stress and deformation, which rotate and develop a stronger texture component with <101‾0> - <112‾0> parallel to ED during RS, leading to the optimization of grain orientation. The phase evolution was investigated by SEM, EDS and TEM. Extrusion and RS effectively crush and disperse the second-phase particles of Mg2Si and Al0.89Li0.11, leading to their homogenization and refinement. The main mechanisms for strengthening the as-swaged alloy include grain refinement strengthening, dislocation strengthening, and second-phase strengthening. Grain refinement strengthening plays a dominant role in the as-swaged alloy.",
keywords = "Conventional extrusion, Mg-Li alloy, Microstructural evolution, Rotary swaging, Strengthening mechanism, Engineering",
author = "Hao Chen and Meng Zhang and Fanxiao Kong and Bin Li and Xiaofei Cui and Yuanding Huang and Norbert Hort and Regine Willumeit-R{\"o}mer and Weidong Xie and Guobing Wei",
note = "Publisher Copyright: {\textcopyright} 2023 Elsevier B.V.",
year = "2023",
month = oct,
day = "3",
doi = "10.1016/j.msea.2023.145627",
language = "English",
volume = "885",
journal = "Materials Science & Engineering A",
issn = "0921-5093",
publisher = "Elsevier Ltd",

}

RIS

TY - JOUR

T1 - Effect of extrusion and rotary swaging on the microstructural evolution and properties of Mg-5Li-5.3Al-0.7Si alloy

AU - Chen, Hao

AU - Zhang, Meng

AU - Kong, Fanxiao

AU - Li, Bin

AU - Cui, Xiaofei

AU - Huang, Yuanding

AU - Hort, Norbert

AU - Willumeit-Römer, Regine

AU - Xie, Weidong

AU - Wei, Guobing

N1 - Publisher Copyright: © 2023 Elsevier B.V.

PY - 2023/10/3

Y1 - 2023/10/3

N2 - High-strength Mg–5Li-5.3Al-0.7Si alloys were prepared by applying a combination of conventional extrusion with an extrusion ratio of 25:1 at 320 °C and subsequent rotary swaging (RS) with 0.2 mm reduction per pass in diameter at room temperature. The microstructural evolution was characterized and mechanical properties were investigated by tensile tests. The EBSD results showed that the grain size of the alloy decreased remarkably after extrusion and RS. Meanwhile, the yield strength (YS) of the as-extruded alloy was significantly improved from 161 MPa to 301 MPa by 2 passes RS, with only a slight reduction in ductility. The grain refinement during RS should be attributed to the activation of twins and continuous dynamic recrystallization (CDRX). The texture evolution during RS was investigated by EBSD. The number of grains with <0001> parallel to extrusion direction (ED) decrease significantly after RS. These grains are subjected to multi-directional stress and deformation, which rotate and develop a stronger texture component with <101‾0> - <112‾0> parallel to ED during RS, leading to the optimization of grain orientation. The phase evolution was investigated by SEM, EDS and TEM. Extrusion and RS effectively crush and disperse the second-phase particles of Mg2Si and Al0.89Li0.11, leading to their homogenization and refinement. The main mechanisms for strengthening the as-swaged alloy include grain refinement strengthening, dislocation strengthening, and second-phase strengthening. Grain refinement strengthening plays a dominant role in the as-swaged alloy.

AB - High-strength Mg–5Li-5.3Al-0.7Si alloys were prepared by applying a combination of conventional extrusion with an extrusion ratio of 25:1 at 320 °C and subsequent rotary swaging (RS) with 0.2 mm reduction per pass in diameter at room temperature. The microstructural evolution was characterized and mechanical properties were investigated by tensile tests. The EBSD results showed that the grain size of the alloy decreased remarkably after extrusion and RS. Meanwhile, the yield strength (YS) of the as-extruded alloy was significantly improved from 161 MPa to 301 MPa by 2 passes RS, with only a slight reduction in ductility. The grain refinement during RS should be attributed to the activation of twins and continuous dynamic recrystallization (CDRX). The texture evolution during RS was investigated by EBSD. The number of grains with <0001> parallel to extrusion direction (ED) decrease significantly after RS. These grains are subjected to multi-directional stress and deformation, which rotate and develop a stronger texture component with <101‾0> - <112‾0> parallel to ED during RS, leading to the optimization of grain orientation. The phase evolution was investigated by SEM, EDS and TEM. Extrusion and RS effectively crush and disperse the second-phase particles of Mg2Si and Al0.89Li0.11, leading to their homogenization and refinement. The main mechanisms for strengthening the as-swaged alloy include grain refinement strengthening, dislocation strengthening, and second-phase strengthening. Grain refinement strengthening plays a dominant role in the as-swaged alloy.

KW - Conventional extrusion

KW - Mg-Li alloy

KW - Microstructural evolution

KW - Rotary swaging

KW - Strengthening mechanism

KW - Engineering

UR - http://www.scopus.com/inward/record.url?scp=85171322613&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/d33f1caa-7703-3704-821c-1d59e3d46f4d/

U2 - 10.1016/j.msea.2023.145627

DO - 10.1016/j.msea.2023.145627

M3 - Journal articles

AN - SCOPUS:85171322613

VL - 885

JO - Materials Science & Engineering A

JF - Materials Science & Engineering A

SN - 0921-5093

M1 - 145627

ER -

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