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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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Orlov, Dmytro
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (41/41 displayed)
- 2024Corrosion Rates by Immersion and Calorimetry on the Example of Extruded Mg10Gd(1Nd)1La
- 2022High-temperature oxidation behaviour of nanostructure surface layered austenitic stainless steelcitations
- 2022Mechanics of accelerated strain hardening in harmonic-structure materialscitations
- 2022Mechanics of accelerated strain hardening in harmonic-structure materialscitations
- 2022Oxygen-sensitive nanoparticles reveal the spatiotemporal dynamics of oxygen reduction during magnesium implant biodegradationcitations
- 2022Separation of XRD peak profiles in single-phase metals with bimodal grain structure to analyze stress partitioningcitations
- 2022Separation of XRD peak profiles in single-phase metals with bimodal grain structure to analyze stress partitioningcitations
- 2022Harmonic structure, a promising microstructure designcitations
- 2021Multimodal ex vivo methods reveal that Gd-rich corrosion byproducts remain at the implant site of biodegradable Mg-Gd screwscitations
- 2021Non-monotonic evolution of surface roughness in a stainless steel during cold deformationcitations
- 2021Operando Reflectance Microscopy on Polycrystalline Surfaces in Thermal Catalysis, Electrocatalysis, and Corrosioncitations
- 2021Enhancing the Mechanical Properties of Biodegradable Mg Alloys Processed by Warm HPT and Thermal Treatmentscitations
- 2021Evolution of gradient structured layer on AZ91D magnesium alloy and its corrosion behaviourcitations
- 2020The effects of severe plastic deformation and/or thermal treatment on the mechanical properties of biodegradable mg-alloyscitations
- 2020Nanotomographic evaluation of precipitate structure evolution in a Mg–Zn–Zr alloy during plastic deformationcitations
- 2020Critical Assesment 37: Harmonic-structure materials - idea, status and perspectivescitations
- 2020Advanced Immersion Testing of Model Mg-Alloys for Biomedical Applicationscitations
- 2019Advantages of architectured harmonic structure in structural performancecitations
- 2019Effect of Alloying with Rare-Earth Metals on the Degradation of Magnesium Alloys Studied Using a Combination of Isothermal Calorimetry and Pressure Measurementscitations
- 2018Adding dimensions to the immersion testing of magnesium corrosioncitations
- 2018Strengthening of a biodegradable Mg–Zn–Ca alloy ZX50 after processing by HPT and heat treatmentcitations
- 2017Microstructure, crystallographic texture and mechanical behaviour of friction stir processed Mg-Zn-Ca-Zr alloy ZKX50citations
- 2014Asymmetric Rolling of Interstitial-Free Steel Using Differential Roll Diameters. Part II: Microstructure and Annealing Effectscitations
- 2014Improvement of mechanical properties in SUS304L steel through the control of bimodal microstructure characteristicscitations
- 2014Particle evolution in Mg-Zn-Zr alloy processed by integrated extrusion and equal channel angular pressingcitations
- 2013Effect of grain size on the mechanisms of plastic deformation in wrought Mg-Zn-Zr alloy revealed by acoustic emission measurementscitations
- 2013Asymmetric Rolling of Interstitial-Free Steel Using Differential Roll Diameters. Part I: Mechanical Properties and Deformation Texturescitations
- 2012Asymmetric rolling of interstitial-free steel using one idle rollcitations
- 2012Improvement of fatigue strength of a Mg-Zn-Zr alloy by integrated extrusion and equal-channel angular pressingcitations
- 2012Analysis of texture and R value variations in asymmetric rolling of if steelcitations
- 2012Development of Asymmetric Rolling for the Better Control over Structure and Mechanical Properties in IF Steelcitations
- 2011The control of texture to improve high-cyclic fatigue performance in copper after equal channel angular pressingcitations
- 2011Enhanced corrosion resistance of Mg alloy ZK60 after processing by integrated extrusion and equal channel angular pressingcitations
- 2010Severe plastic deformation processes for thin samplescitations
- 2009Useful properties of twist extrusioncitations
- 2007Grain refinement response during twist extrusion of an Al-0.13 % Mg alloycitations
- 2005Refinement of microstructure and mechanical properties of titanium processed by twist extrusion and subsequent rolling
- 2005Refinement of microstructure and mechanical properties of titanium processed by twist extrusion and subsequent rolling
- 2004Microstructure, mechanical properties and anysotropy of pure ti processed by twist extrusion and cold rolling
- 2004Destabilization of fcc stable materials during SPD under high pressure
- 2002Microstructural evolution of titanium under twist extrusion
Places of action
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article
The effects of severe plastic deformation and/or thermal treatment on the mechanical properties of biodegradable mg-alloys
Abstract
In this study, five MgZnCa alloys with low alloy content and high biocorrosion resistance were investigated during thermomechanical processing. As documented by microhardness and tensile tests, high pressure torsion (HPT)-processing and subsequent heat treatments led to strength increases of up to 250%; as much as about 1/3 of this increase was due to the heat treatment. Microstructural analyses by electron microscopy revealed a significant density of precipitates, but estimates of the Orowan strength exhibited values much smaller than the strength increases observed. Calculations using Kirchner’s model of vacancy hardening, however, showed that vacancy concentrations of 10−⁵ could have accounted for the extensive hardening observed, at least when they formed vacancy agglomerates with sizes around 50‒100 nm. While such an effect has been suggested for a selected Mg-alloy already in a previous paper of the authors, in this study the effect was substantiated by combined quantitative evaluations from differential scanning calorimetry and X-ray line profile analysis. Those exhibited vacancy concentrations of up to about 10−3 with a marked percentage being part of vacancy agglomerates, which has been confirmed by evaluations of defect specific activation migration enthalpies. The variations of Young’s modulus during HPT-processing and during the subsequent thermal treatments were small. Additionally, the corrosion rate did not markedly change compared to that of the homogenized state.