High-performance Mg–Zn alloy achieved by the ultrafine grain and nanoparticle design

Wenhui Wang; Xiyue Zhang; Anke Zhang; Han Yu; Xinbao Kang; Cheng Wang; Yang Song; Jiahua Ni; Mikhail L. Zheludkevich; Xiaonong Zhang

Bioactive Materials (Nov 2024)

High-performance Mg–Zn alloy achieved by the ultrafine grain and nanoparticle design

Wenhui Wang,
Xiyue Zhang,
Anke Zhang,
Han Yu,
Xinbao Kang,
Cheng Wang,
Yang Song,
Jiahua Ni,
Mikhail L. Zheludkevich,
Xiaonong Zhang

Affiliations

Wenhui Wang: State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, China; College of Biological Science and Medical Engineering, Donghua University, Shanghai, China
Xiyue Zhang: State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, China
Anke Zhang: The Second Affiliated Hospital, Zhejiang University, Zhejiang, China; Corresponding author. Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310009, China.
Han Yu: State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, China
Xinbao Kang: State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, China
Cheng Wang: Institute of Surface Science, Helmholtz-Zentrum Hereon, Geesthacht, 21502, Germany; Corresponding autho.
Yang Song: State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, China
Jiahua Ni: College of Biological Science and Medical Engineering, Donghua University, Shanghai, China; Corresponding author. College of Biological Science and Medical Engineering, Donghua University, Shanghai, 200240, China.
Mikhail L. Zheludkevich: Institute of Surface Science, Helmholtz-Zentrum Hereon, Geesthacht, 21502, Germany
Xiaonong Zhang: State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, China; Suzhou Origin Medical Technology Co. Ltd., Jiangsu, China; Corresponding author. State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China.

Journal volume & issue: Vol. 41
pp. 371 – 384

Abstract

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Improving the comprehensive performance of low alloyed Mg is a significant challenge for biomedical applications. This paper developed a high-performance Mg–Zn alloy with uniform ultrafine grains and nano-precipitates through a straightforward, high-temperature reciprocating equal channel angle extrusion (ECAP) process and researched the microstructure, mechanical property, degradation behaviour, and biocompatibility of the developed alloy. Results showed that the lean Mg–2Zn alloy successfully refined grain to about 1 μm and produced plenty of nano-particles with uniform distribution, providing high comprehensive mechanical properties (YS: 235 MPa, UTS: 267 MPa, EL: 15.6 %). Additionally, Zn-riched nano-particles in the matrix could decrease the Zn aggregation at the corrosion layer-matrix interface and form a dense oxide film, achieving a low degradation rate (0.13 mm/year in vivo). Finally, this work realizes the low alloy content, low cost, and good properties of one biodegradable Mg alloy, which will benefit the promotion of future clinical applications.

Published in Bioactive Materials

ISSN: 2452-199X (Online)
Publisher: KeAi Communications Co., Ltd.
Country of publisher: China
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials; Science: Biology (General)
Website: https://www.keaipublishing.com/en/journals/bioactive-materials/

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