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Direct extrusion of thin Mg wires for biomedical applications
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SYSNO ASEP 0532120 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Direct extrusion of thin Mg wires for biomedical applications Author(s) Tesař, Karel (FZU-D) ORCID
Balík, Karel (USMH-B) RID, ORCID
Sucharda, Zbyněk (USMH-B)
Jäger, A. (CZ)Number of authors 4 Source Title Transactions of Nonferrous Metals Society of China - ISSN 1003-6326
Roč. 30, č. 2 (2020), s. 373-381Number of pages 9 s. Language eng - English Country NL - Netherlands Keywords biomedical materials ; mechanical properties ; fracture ; nonferrous metals ; magnesium Subject RIV JG - Metallurgy OECD category Materials engineering Subject RIV - cooperation Institute of Rock Structure and Mechanics - Metallurgy Method of publishing Limited access Institutional support FZU-D - RVO:68378271 ; USMH-B - RVO:67985891 UT WOS 000518862200008 EID SCOPUS 85080107793 DOI 10.1016/S1003-6326(20)65219-0 Annotation Biodegradable wires are the novel trends in current biomaterial research. A thin 99.92% Mg wire with a diameter of 250 µm was prepared via direct extrusion with an extreme reduction ratio of 1:576. The total imposed strain in a single processing step was 6.36. Extrusion was carried out at elevated temperatures in the range from 230 to 310 °C and with various ram speeds ranging from ∼0.2 to ∼0.5 mm/s. The resulting wires show very good mechanical properties which vary with extrusion parameters. Maximum true tensile stress at room temperature reaches ∼228 MPa and ductility reaches ∼13%. The proposed single-step direct extrusion can be an effective method for the production of Mg wires in sufficient quantities for bioapplications. The fractographic analysis revealed that failure of the wires may be closely connected with inclusions (e.g., MgO particles). The results are essential for determining the optimal processing conditions of hot extrusion for thin Mg wire. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2021 Electronic address https://doi.org/10.1016/S1003-6326(20)65219-0
Number of the records: 1