University of Oulu

Yao, H., Wang, S., Xiong, Y. et al. Enhanced Mechanical Properties and Corrosion Resistance by Minor Gd Alloying with a Hot-Extruded Mg Alloy. J. of Materi Eng and Perform 31, 9997–10009 (2022).

Enhanced mechanical properties and corrosion resistance by minor Gd alloying with a hot-extruded Mg alloy

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Author: Yao, Huai1,2; Wang, Shubo3; Xiong, Yi1;
Organizations: 1School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang, 471023, Henan, China
2Provincial and Ministerial Co-construction of Collaborative Innovation Center for Non-ferrous Metal New Materials and Advanced Processing Technology, Luoyang, 471023, Henan, China
3Nano and Molecular Systems Research Unit, Centre for Advanced Steels Research, University of Oulu, FI-90014, Oulu, Finland
4School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou, 221116, Jiangsu, China
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 2.6 MB)
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Language: English
Published: Springer Nature, 2022
Publish Date: 2023-01-05


The microstructure, mechanical properties, and corrosion resistance to simulated body fluid solution behavior of as-extruded Mg-1.8Zn-0.5Zr alloys with different Gd additions are investigated. It is found that dynamic recrystallization occurs in the alloys during extrusion and the grain size gradually decreases with Gd alloying. The mechanical properties and corrosion resistance to simulated body fluid of the investigated alloys enhance firstly and then weaken with the increase in Gd content. The results reveal that the Mg-1.8Zn-0.5Zr with a 1.5 wt.% Gd addition has optimized mechanical properties and corrosion resistance. A three-stage corrosion mechanism, including sequential stages from hydroxidation, phosphatization and hydroxidation, to formation-dissolution dynamic equilibrium, is proposed through electrochemical measurements and corroded surface analyses. This study reveals the extruded Mg-1.8Zn-0.5Zr-1.5Gd alloy can be regarded as a potential candidate for using as biodegradable magnesium implants.

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Series: Journal of materials engineering and performance
ISSN: 1059-9495
ISSN-E: 1544-1024
ISSN-L: 1059-9495
Volume: 31
Issue: 12
Pages: 9997 - 10009
DOI: 10.1007/s11665-022-07024-8
Type of Publication: A1 Journal article – refereed
Field of Science: 216 Materials engineering
116 Chemical sciences
Funding: This work was financially supported by the Education Department of Henan Province (20A430010), National Natural Science Foundation of China (U1804146, 52111530068), Foreign Experts and Introduction Project of Henan Province (HNGD2020009) and Academy of Finland Grant #311934.
Copyright information: © ASM International. This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: