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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Zhou, Jie
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (31/31 displayed)
- 2024Biodegradation-affected fatigue behavior of extrusion-based additively manufactured porous iron–manganese scaffoldscitations
- 2023Biomechanical evaluation of additively manufactured patient-specific mandibular cage implants designed with a semi-automated workflowcitations
- 2023Extrusion-based 3D printing of biodegradable, osteogenic, paramagnetic, and porous FeMn-akermanite bone substitutescitations
- 2023Quality of AM implants in biomedical applicationcitations
- 2022Extrusion-based additive manufacturing of Mg-Zn alloy scaffoldscitations
- 2022Additive manufacturing of bioactive and biodegradable porous iron-akermanite composites for bone regenerationcitations
- 2022Poly(2-ethyl-2-oxazoline) coating of additively manufactured biodegradable porous ironcitations
- 2022Additive Manufacturing of Biomaterialscitations
- 2021Extrusion-based 3D printing of ex situ-alloyed highly biodegradable MRI-friendly porous iron-manganese scaffoldscitations
- 2021Additively Manufactured Biodegradable Porous Zinc Implants for Orthopeadic Applications
- 2021Extrusion-based 3D printed biodegradable porous ironcitations
- 2021Biocompatibility and Absorption Behavior in Vitro of Direct Printed Porous Iron Porous Implants
- 2021Lattice structures made by laser powder bed fusioncitations
- 2020Additively manufactured biodegradable porous zinccitations
- 2020Multi-material additive manufacturing technologies for Ti-, Mg-, and Fe-based biomaterials for bone substitutioncitations
- 2019Additively manufactured functionally graded biodegradable porous ironcitations
- 2019Modeling high temperature deformation characteristics of AA7020 aluminum alloy using substructure-based constitutive equations and mesh-free approximation methodcitations
- 2019Biodegradation-affected fatigue behavior of additively manufactured porous magnesiumcitations
- 2018Additively manufactured biodegradable porous ironcitations
- 2018A comprehensive investigation of the strengthening effects of dislocations, texture and low and high angle grain boundaries in ultrafine grained AA6063 aluminum alloycitations
- 2018Biodegradation and mechanical behavior of an advanced bioceramic-containing Mg matrix composite synthesized through in-situ solid-state oxidationcitations
- 2017Advanced bredigite-containing magnesium-matrix composites for biodegradable bone implant applicationscitations
- 2017Improvement of mechanical properties of AA6063 aluminum alloy after equal channel angular pressing by applying a two-stage solution treatmentcitations
- 2017Additively manufactured biodegradable porous magnesiumcitations
- 2017Fabrication of novel magnesium-matrix composites and their mechanical properties prior to and during in vitro degradationcitations
- 2016Simultaneous improvements of the strength and ductility of fine-grained AA6063 alloy with increasing number of ECAP passescitations
- 2016An investigation on the properties of injection-molded pure iron potentially for biodegradable stent applicationcitations
- 2015Analysis of the densification behaviour of titanium/carbamide powder mixtures in the preparation of biomedical titanium scaffolds.
- 2015In vitro degradation of magnesium metal matrix composites containing bredigite
- 2015Evolution of macro- and micro-pores in the porous structures of biomedical titanium scaffolds during isothermal sintering
- 2010Preliminary investigation on creep-fatigue regime in extrusion dies
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article
Biodegradation-affected fatigue behavior of additively manufactured porous magnesium
Abstract
<p>Additively manufactured (AM) biodegradable metals with topologically ordered porous structures hold unprecedented promise as potential bone substitutes. The first reports on this type of biomaterials have just recently appeared in the literature. There is, however, no information available in the literature regarding their mechanical performance under cyclic loading or the interactions between biodegradation and cyclic loading. We therefore used selective laser melting (SLM) to fabricate porous magnesium alloy (WE43) scaffolds based on diamond unit cells. The microstructure of the resulting material was examined using electron back-scattered diffraction, scanning transmission electron microscopy, and X-ray diffraction. The fatigue behaviors of the material in air and in revised simulated body fluid (r-SBF) were evaluated and compared. Biodegradation decreased the fatigue strength of the porous material from 30% to 20% of its yield strength. Moreover, cyclic loading significantly increased its biodegradation rate. The mechanistic aspects of how biodegradation and cyclic loading interacted with each other on different scales were revealed as well. On the micro-scale, cracks initiated at biodegradation pits and propagated transgranularly. In addition, dislocations became more tangled after the fatigue tests. On the macro-scale, cracks preferred initiating at the strut junctions where tensile stress concentrations were present, as revealed by the finite element analysis of the porous material under compressive loading. Most of the cracks initiated in the struts were positioned on the periphery of the specimens. Furthermore, the biodegradation pattern was found to be location-dependent with more localized biodegradation occurring in the center of the specimens. Further improvements in the biodegradation-affected fatigue performance of the AM porous Mg alloy may therefore be realized by optimizing both the topological design of the porous structure and the laser-processing parameters that determine the microstructure of the SLM porous material.</p>