Effects of Ga on the corrosion behaviors of severe plastic deformation strengthened biodegradable Mg-2Zn-xGa alloys

Donglei He; Mengran Zhou; Zhenhai Dai; Ziyue Zhang; Qingyu Shi; Xinze Dong; Gaoqiang Chen; Yuxiang Han; Yuru Zha; Haoye Meng; Fan Ye; Li Zhong; Fan Liu; Hao Gong; Yang Zheng; Weikang Zhao; Timo Lehtonen; Yan Li; Yake Liu

doi:10.1016/j.corsci.2025.113265

Effects of Ga on the corrosion behaviors of severe plastic deformation strengthened biodegradable Mg-2Zn-xGa alloys

Donglei He, Mengran Zhou^*, Zhenhai Dai, Ziyue Zhang, Qingyu Shi, Xinze Dong, Gaoqiang Chen, Yuxiang Han, Yuru Zha, Haoye Meng, Fan Ye, Li Zhong, Fan Liu, Hao Gong, Yang Zheng, Weikang Zhao, Timo Lehtonen, Yan Li^*, Yake Liu

^*Corresponding author for this work

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

Abstract

Friction stir processing (FSP) was performed on as-cast biodegradable Mg-2Zn-xGa (x = 3, 5, 7 wt%) alloys and the effects of Ga on the corrosion behaviors of FSPed Mg-2Zn-xGa were systematically investigated in this work. Increasing Ga content in the alloys could remarkably refine the microstructure and weaken the texture of FSPed Mg-2Zn-xGa due to stimulated recrystallization and grain-growth hindrance induced by increasing Mg₅Ga₂ precipitates. FSPed Mg-2Zn-3Ga had the lowest corrosion rate (0.23 mm/y) due to the almost complete dissolution of Mg₅Ga₂ precipitates, strongest (0001) basal texture, and largest number fraction of low angular grain boundary induced by FSP. With increasing Ga content, FSPed Mg-2Zn-xGa showed finer grains but faster corrosion rate due to the existence of increasing Mg₅Ga₂ precipitates, weaker (0001) basal texture, and lower number fraction of low angular grain boundary. The corrosion products presented a double-layer structure with an outer layer dominated by Ca₃(PO₄)₂ and an inner layer dominated by Mg(OH)₂.

Original language	English
Article number	113265
Journal	Corrosion Science
Volume	257
DOIs	https://doi.org/10.1016/j.corsci.2025.113265
Publication status	Published - Dec 2025
Externally published	Yes

Keywords

Biomaterial
Corrosion behavior
Friction stir processing
Magnesium alloy

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10.1016/j.corsci.2025.113265

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He, D., Zhou, M., Dai, Z., Zhang, Z., Shi, Q., Dong, X., Chen, G., Han, Y., Zha, Y., Meng, H., Ye, F., Zhong, L., Liu, F., Gong, H., Zheng, Y., Zhao, W., Lehtonen, T., Li, Y., & Liu, Y. (2025). Effects of Ga on the corrosion behaviors of severe plastic deformation strengthened biodegradable Mg-2Zn-xGa alloys. Corrosion Science, 257, Article 113265. https://doi.org/10.1016/j.corsci.2025.113265

@article{1da0c02c9c7b46769c4f9063795ea06b,

title = "Effects of Ga on the corrosion behaviors of severe plastic deformation strengthened biodegradable Mg-2Zn-xGa alloys",

abstract = "Friction stir processing (FSP) was performed on as-cast biodegradable Mg-2Zn-xGa (x = 3, 5, 7 wt\%) alloys and the effects of Ga on the corrosion behaviors of FSPed Mg-2Zn-xGa were systematically investigated in this work. Increasing Ga content in the alloys could remarkably refine the microstructure and weaken the texture of FSPed Mg-2Zn-xGa due to stimulated recrystallization and grain-growth hindrance induced by increasing Mg5Ga2 precipitates. FSPed Mg-2Zn-3Ga had the lowest corrosion rate (0.23 mm/y) due to the almost complete dissolution of Mg5Ga2 precipitates, strongest (0001) basal texture, and largest number fraction of low angular grain boundary induced by FSP. With increasing Ga content, FSPed Mg-2Zn-xGa showed finer grains but faster corrosion rate due to the existence of increasing Mg5Ga2 precipitates, weaker (0001) basal texture, and lower number fraction of low angular grain boundary. The corrosion products presented a double-layer structure with an outer layer dominated by Ca3(PO4)2 and an inner layer dominated by Mg(OH)2.",

keywords = "Biomaterial, Corrosion behavior, Friction stir processing, Magnesium alloy",

author = "Donglei He and Mengran Zhou and Zhenhai Dai and Ziyue Zhang and Qingyu Shi and Xinze Dong and Gaoqiang Chen and Yuxiang Han and Yuru Zha and Haoye Meng and Fan Ye and Li Zhong and Fan Liu and Hao Gong and Yang Zheng and Weikang Zhao and Timo Lehtonen and Yan Li and Yake Liu",

note = "Publisher Copyright: {\textcopyright} 2025",

year = "2025",

month = dec,

doi = "10.1016/j.corsci.2025.113265",

language = "English",

volume = "257",

journal = "Corrosion Science",

issn = "0010-938X",

publisher = "Elsevier Ltd.",

}

He, D, Zhou, M, Dai, Z, Zhang, Z, Shi, Q, Dong, X, Chen, G, Han, Y, Zha, Y, Meng, H, Ye, F, Zhong, L, Liu, F, Gong, H, Zheng, Y, Zhao, W, Lehtonen, T, Li, Y & Liu, Y 2025, 'Effects of Ga on the corrosion behaviors of severe plastic deformation strengthened biodegradable Mg-2Zn-xGa alloys', Corrosion Science, vol. 257, 113265. https://doi.org/10.1016/j.corsci.2025.113265

TY - JOUR

T1 - Effects of Ga on the corrosion behaviors of severe plastic deformation strengthened biodegradable Mg-2Zn-xGa alloys

AU - He, Donglei

AU - Zhou, Mengran

AU - Dai, Zhenhai

AU - Zhang, Ziyue

AU - Shi, Qingyu

AU - Dong, Xinze

AU - Chen, Gaoqiang

AU - Han, Yuxiang

AU - Zha, Yuru

AU - Meng, Haoye

AU - Ye, Fan

AU - Zhong, Li

AU - Liu, Fan

AU - Gong, Hao

AU - Zheng, Yang

AU - Zhao, Weikang

AU - Lehtonen, Timo

AU - Li, Yan

AU - Liu, Yake

PY - 2025/12

Y1 - 2025/12

N2 - Friction stir processing (FSP) was performed on as-cast biodegradable Mg-2Zn-xGa (x = 3, 5, 7 wt%) alloys and the effects of Ga on the corrosion behaviors of FSPed Mg-2Zn-xGa were systematically investigated in this work. Increasing Ga content in the alloys could remarkably refine the microstructure and weaken the texture of FSPed Mg-2Zn-xGa due to stimulated recrystallization and grain-growth hindrance induced by increasing Mg5Ga2 precipitates. FSPed Mg-2Zn-3Ga had the lowest corrosion rate (0.23 mm/y) due to the almost complete dissolution of Mg5Ga2 precipitates, strongest (0001) basal texture, and largest number fraction of low angular grain boundary induced by FSP. With increasing Ga content, FSPed Mg-2Zn-xGa showed finer grains but faster corrosion rate due to the existence of increasing Mg5Ga2 precipitates, weaker (0001) basal texture, and lower number fraction of low angular grain boundary. The corrosion products presented a double-layer structure with an outer layer dominated by Ca3(PO4)2 and an inner layer dominated by Mg(OH)2.

AB - Friction stir processing (FSP) was performed on as-cast biodegradable Mg-2Zn-xGa (x = 3, 5, 7 wt%) alloys and the effects of Ga on the corrosion behaviors of FSPed Mg-2Zn-xGa were systematically investigated in this work. Increasing Ga content in the alloys could remarkably refine the microstructure and weaken the texture of FSPed Mg-2Zn-xGa due to stimulated recrystallization and grain-growth hindrance induced by increasing Mg5Ga2 precipitates. FSPed Mg-2Zn-3Ga had the lowest corrosion rate (0.23 mm/y) due to the almost complete dissolution of Mg5Ga2 precipitates, strongest (0001) basal texture, and largest number fraction of low angular grain boundary induced by FSP. With increasing Ga content, FSPed Mg-2Zn-xGa showed finer grains but faster corrosion rate due to the existence of increasing Mg5Ga2 precipitates, weaker (0001) basal texture, and lower number fraction of low angular grain boundary. The corrosion products presented a double-layer structure with an outer layer dominated by Ca3(PO4)2 and an inner layer dominated by Mg(OH)2.

KW - Biomaterial

KW - Corrosion behavior

KW - Friction stir processing

KW - Magnesium alloy

UR - https://www.scopus.com/pages/publications/105013783639

U2 - 10.1016/j.corsci.2025.113265

DO - 10.1016/j.corsci.2025.113265

M3 - Article

AN - SCOPUS:105013783639

SN - 0010-938X

VL - 257

JO - Corrosion Science

JF - Corrosion Science

M1 - 113265

ER -

Effects of Ga on the corrosion behaviors of severe plastic deformation strengthened biodegradable Mg-2Zn-xGa alloys

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Keywords

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