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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

3D thixo-printing: A novel approach for additive manufacturing of biodegradable Mg-Zn alloys

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Author(s):
Lima, Dalton Daniel [1] ; Campo, Kaio Niitsu [1] ; Button, Sergio Tonini [1] ; Caram, Rubens [1]
Total Authors: 4
Affiliation:
[1] Univ Campinas UNICAMP, Sch Mech Engn, BR-13083860 Campinas, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: MATERIALS & DESIGN; v. 196, NOV 2020.
Web of Science Citations: 0
Abstract

A simple and widely used additive manufacturing technique for polymeric materials is fused filament fabrication (FFF). In the semi-solid state, metallic materials may show rheological features comparable to those of polymers. Thus, they can be processed accordingly. The use of biodegradable Mg-based materials is an interesting approach to avoid removal surgeries and release of toxic corrosion products and wear debris. Therefore, in this study, the FFF technique was applied using a biodegradable Mg-Zn alloy in the semi-solid state. Some preliminary compositions were investigated through thermodynamic simulations to verify their compatibility with the process. Among them, Mg-38Zn was selected to be experimentally evaluated. Metallic filaments were produced via hot extrusion, which also aided in obtaining a globular microstructure in the semi-solid state. FFF was performed at 420 degrees C without any obstruction at the nozzle channel, which allowed the production of sound parts with acceptable welding between the deposited layers. This indicated that this technique (termed as ``3D thixoprinting{''}) provides a promising additive manufacturing route to produce biodegradable Mg-based implants. (c) 2020 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http:// creativecommons.org/licenses/by-nc-nd/4.0/). (AU)

FAPESP's process: 18/10190-5 - Design and Semisolid Processing of High-Entropy Alloys Based on the CrCuFeMnNi System
Grantee:Kaio Niitsu Campo
Support type: Scholarships in Brazil - Post-Doctorate