Microstructure and Wear Behavior of Heat-Treated Mg-1Zn-1Ca Alloy for Biomedical Applications
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Published:2023-12-22
Issue:1
Volume:17
Page:70
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ISSN:1996-1944
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Container-title:Materials
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language:en
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Short-container-title:Materials
Author:
Pulido-González Nuria1, García-Rodríguez Sonia1, Torres Belén1ORCID, Rams Joaquin1ORCID
Affiliation:
1. Departamento de Matemática Aplicada, Ciencia e Ingeniería de Materiales y Tecnología Electrónica, Escuela Superior de Ciencias Experimentales y Tecnología, Universidad Rey Juan Carlos, C/Tulipán s/n, Móstoles, 28933 Madrid, Spain
Abstract
The microstructure and wear properties of a Mg-1wt.% Zn-1wt.% Ca (ZX11) alloy with different heat treatments have been investigated. The ZX11 alloy was tested in the as-cast state and after different heat treatment conditions: solution-treated (at 450 °C for 24 h), peak-aged (solution-treated + aged at 180 °C for 3 h), and over-aged (solution-treated + aged at 180 °C for 24 h). The microstructure of the as-cast sample showed a continuous intermetallic phase at the grain boundaries, while the heat-treated samples exhibited discrete precipitated particles within the grains. To evaluate the wear behavior, the samples were tested using a pin-on-disc configuration, where the wear rates and friction coefficients were measured at different loads and sliding speeds. An AZ31 magnesium alloy was used as the counterbody. The worn surfaces and the wear debris were studied to identify the main wear mechanisms corresponding to each test condition. The results indicated the presence of abrasion, oxidation, and adhesive wear mechanisms in all testing conditions. In the as-cast state, delamination and plastic deformation were the dominant wear mechanisms, while they were less relevant in the heat-treated conditions. The peak-aged samples exhibited the lowest wear rates, suggesting that modifying the distribution of intermetallic precipitates contributed to enhancing the wear resistance of the alloy.
Funder
Agencia Estatal de Investigación Comunidad de Madrid Ministerio de Educación, Cultura y Deporte
Subject
General Materials Science
Reference39 articles.
1. Magnesium Alloys: Fundamentals and Recent Advances;Rams;Encycl. Mater. Met. Alloy.,2022 2. Kumar, A., Kumar, S., Mukhopadhyay, N.K., Yadav, A., Kumar, V., and Winczek, J. (2021). Effect of variation of sic reinforcement on wear behaviour of az91 alloy composites. Materials, 14. 3. Effect of TiC Reinforcement on Mechanical and Wear Properties of AZ91 Matrix Composites;Kumar;Int. J. Met.,2022 4. Metals for bone implants. Part 1. Powder metallurgy and implant rendering;Andani;Acta Biomater.,2014 5. Shayesteh Moghaddam, N., Taheri Andani, M., Amerinatanzi, A., Haberland, C., Huff, S., Miller, M., Elahinia, M., and Dean, D. (2016). Metals for bone implants: Safety, design, and efficacy. Biomanufacturing Rev., 1.
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