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Achieving enhanced mechanical properties in Mg-Gd-Y-Zn-Mn alloy by altering dynamic recrystallization behavior via pre-ageing treatment

Research output: Journal contributions › Journal articles › Research › peer-review

Standard

Achieving enhanced mechanical properties in Mg-Gd-Y-Zn-Mn alloy by altering dynamic recrystallization behavior via pre-ageing treatment. / Wang, Kui; Dou, Xiaoxu; Wang, Jingfeng et al.
In: Materials Science and Engineering A, Vol. 790, 139635, 14.07.2020.

Research output: Journal contributions › Journal articles › Research › peer-review

Harvard

Wang, K, Dou, X, Wang, J, Huang, Y, Gavras, S, Hort, N, Liu, S, Hu, H, Wang, J & Pan, F 2020, 'Achieving enhanced mechanical properties in Mg-Gd-Y-Zn-Mn alloy by altering dynamic recrystallization behavior via pre-ageing treatment', Materials Science and Engineering A, vol. 790, 139635. https://doi.org/10.1016/j.msea.2020.139635

APA

Wang, K., Dou, X., Wang, J., Huang, Y., Gavras, S., Hort, N., Liu, S., Hu, H., Wang, J., & Pan, F. (2020). Achieving enhanced mechanical properties in Mg-Gd-Y-Zn-Mn alloy by altering dynamic recrystallization behavior via pre-ageing treatment. Materials Science and Engineering A, 790, Article 139635. https://doi.org/10.1016/j.msea.2020.139635

Vancouver

Wang K, Dou X, Wang J, Huang Y, Gavras S, Hort N et al. Achieving enhanced mechanical properties in Mg-Gd-Y-Zn-Mn alloy by altering dynamic recrystallization behavior via pre-ageing treatment. Materials Science and Engineering A. 2020 Jul 14;790:139635. doi: 10.1016/j.msea.2020.139635

Bibtex

@article{78adf2fcf2ac45dca519bd9d8aa131a8,
title = "Achieving enhanced mechanical properties in Mg-Gd-Y-Zn-Mn alloy by altering dynamic recrystallization behavior via pre-ageing treatment",
abstract = "The effects of pre-ageing treatment on the microstructure and mechanical properties of the Mg-9.2Gd-4.4Y-1.0Zn-0.8Mn (wt.%) alloy were investigated. Microstructural analysis indicated that the ageing treatment before extrusion led to the formation of dense prismatic β′ and basal γ′ precipitates in heat treated alloys. The presence of these precipitates and their solution obstructed the dynamic recrystallization process during hot extrusion. The lamellar long-period stacking ordered (LPSO) phases restrained the recrystallization through forming the kink band and releasing the stress concentration, and the fine β-Mg5(Gd, Y) particles suppressed the recrystallization by the particle pinning effect. The block-shaped LPSO phases and coarse β-Mg5(Gd, Y) particles promoted the recrystallization following the particle stimulated nucleation (PSN) mechanism. The combined effects led to the formation of the bimodal microstructure, which shows fine recrystallized grains with random grain orientation and deformed grains with strong fiber texture. The bimodal microstructure with lower recrystallization fraction provides the alloy higher strength and lower ductility. With solid-solution and pre-ageing treatments, the as-extruded alloy shows the best strength-ductility balance with an ultimate tensile strength (UTS) of 455 MPa, tensile yield strength (TYS) of 382 MPa and elongation to failure (EL) of 11.0%. The outstanding mechanical properties are mainly attributed to the bimodal microstructure, strong fiber texture, β-Mg5(Gd, Y) particles, lamellar and block-shaped LPSO phases.",
keywords = "Heat treatments, Long-period stacking ordered phase, Mechanical properties, Mg-Gd-Y-Zn-Mn alloy, Morphology, Engineering",
author = "Kui Wang and Xiaoxu Dou and Jingfeng Wang and Yuanding Huang and Sarkis Gavras and Norbert Hort and Shijie Liu and Hao Hu and Jinxing Wang and Fusheng Pan",
year = "2020",
month = jul,
day = "14",
doi = "10.1016/j.msea.2020.139635",
language = "English",
volume = "790",
journal = "Materials Science and Engineering A",
issn = "0921-5093",
publisher = "Elsevier Ltd",

}

RIS

TY - JOUR

T1 - Achieving enhanced mechanical properties in Mg-Gd-Y-Zn-Mn alloy by altering dynamic recrystallization behavior via pre-ageing treatment

AU - Wang, Kui

AU - Dou, Xiaoxu

AU - Wang, Jingfeng

AU - Huang, Yuanding

AU - Gavras, Sarkis

AU - Hort, Norbert

AU - Liu, Shijie

AU - Hu, Hao

AU - Wang, Jinxing

AU - Pan, Fusheng

PY - 2020/7/14

Y1 - 2020/7/14

N2 - The effects of pre-ageing treatment on the microstructure and mechanical properties of the Mg-9.2Gd-4.4Y-1.0Zn-0.8Mn (wt.%) alloy were investigated. Microstructural analysis indicated that the ageing treatment before extrusion led to the formation of dense prismatic β′ and basal γ′ precipitates in heat treated alloys. The presence of these precipitates and their solution obstructed the dynamic recrystallization process during hot extrusion. The lamellar long-period stacking ordered (LPSO) phases restrained the recrystallization through forming the kink band and releasing the stress concentration, and the fine β-Mg5(Gd, Y) particles suppressed the recrystallization by the particle pinning effect. The block-shaped LPSO phases and coarse β-Mg5(Gd, Y) particles promoted the recrystallization following the particle stimulated nucleation (PSN) mechanism. The combined effects led to the formation of the bimodal microstructure, which shows fine recrystallized grains with random grain orientation and deformed grains with strong fiber texture. The bimodal microstructure with lower recrystallization fraction provides the alloy higher strength and lower ductility. With solid-solution and pre-ageing treatments, the as-extruded alloy shows the best strength-ductility balance with an ultimate tensile strength (UTS) of 455 MPa, tensile yield strength (TYS) of 382 MPa and elongation to failure (EL) of 11.0%. The outstanding mechanical properties are mainly attributed to the bimodal microstructure, strong fiber texture, β-Mg5(Gd, Y) particles, lamellar and block-shaped LPSO phases.

AB - The effects of pre-ageing treatment on the microstructure and mechanical properties of the Mg-9.2Gd-4.4Y-1.0Zn-0.8Mn (wt.%) alloy were investigated. Microstructural analysis indicated that the ageing treatment before extrusion led to the formation of dense prismatic β′ and basal γ′ precipitates in heat treated alloys. The presence of these precipitates and their solution obstructed the dynamic recrystallization process during hot extrusion. The lamellar long-period stacking ordered (LPSO) phases restrained the recrystallization through forming the kink band and releasing the stress concentration, and the fine β-Mg5(Gd, Y) particles suppressed the recrystallization by the particle pinning effect. The block-shaped LPSO phases and coarse β-Mg5(Gd, Y) particles promoted the recrystallization following the particle stimulated nucleation (PSN) mechanism. The combined effects led to the formation of the bimodal microstructure, which shows fine recrystallized grains with random grain orientation and deformed grains with strong fiber texture. The bimodal microstructure with lower recrystallization fraction provides the alloy higher strength and lower ductility. With solid-solution and pre-ageing treatments, the as-extruded alloy shows the best strength-ductility balance with an ultimate tensile strength (UTS) of 455 MPa, tensile yield strength (TYS) of 382 MPa and elongation to failure (EL) of 11.0%. The outstanding mechanical properties are mainly attributed to the bimodal microstructure, strong fiber texture, β-Mg5(Gd, Y) particles, lamellar and block-shaped LPSO phases.

KW - Heat treatments

KW - Long-period stacking ordered phase

KW - Mechanical properties

KW - Mg-Gd-Y-Zn-Mn alloy

KW - Morphology

KW - Engineering

UR - http://www.scopus.com/inward/record.url?scp=85086066236&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/324f705f-fa7b-3e1f-a771-1f003b1d651e/

U2 - 10.1016/j.msea.2020.139635

DO - 10.1016/j.msea.2020.139635

M3 - Journal articles

AN - SCOPUS:85086066236

VL - 790

JO - Materials Science and Engineering A

JF - Materials Science and Engineering A

SN - 0921-5093

M1 - 139635

ER -

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