Twinning Evolution as a Function of Loading Direction in Magnesium

Čapek, Jan; Stráská, Jitka; Clausen, B.; Máthis, Kristián

doi:10.12693/aphyspola.128.762

Cited by 10 publications

(3 citation statements)

References 11 publications

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“…Grain preferential orientation of wrought magnesium and its alloys has been reported by many studies, since it can influence the mechanical properties and corrosion behavior, as well as many other material characteristics . In fact, in an extruded bar, a large fraction of grains oriented roughly perpendicularly to the extrusion direction has been reported, whereas in an extruded plate basal planes are inclined about 45° to the transverse direction .…”

Section: Resultsmentioning

confidence: 97%

Design of tailored biodegradable implants: The effect of voltage on electrodeposited calcium phosphate coatings on pure magnesium

et al. 2018

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Magnesium, as a biodegradable metal, offers great potential for use as a temporary implant material, which dissolves in the course of bone tissue healing. It can sufficiently support the bone and promote the bone healing process. However, the corrosion resistance of magnesium implants must be enhanced before its application in clinical practice. A promising approach of enhancing the corrosion resistance is deposition of bioactive coating, which can reduce the corrosion rate of the implants and promote bone healing. Therefore, a well-designed substrate-coating system allowing a good control of the degradation behavior is highly desirable for tailored implants for specific groups of patients with particular needs. In this contribution, the influence of coating formation conditions on the characteristics of potentiostatically electrodeposited CaP coatings on magnesium substrate was evaluated. Results showed that potential variation led to formation of coatings with the same chemical composition, but very different morphologies.Parameters that mostly influence the coating performance, such as the thickness, uniformity, deposits size, and orientation, varied from produced coating to coating. These characteristics of CaP coatings on magnesium were controlled by coating formation potential, and it was demonstrated that the electrodeposition could be a promising coating technique for production of tailored magnesium-CaP implants.

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Section: Resultsmentioning

confidence: 97%

Design of tailored biodegradable implants: The effect of voltage on electrodeposited calcium phosphate coatings on pure magnesium

et al. 2018

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“…The experimental data presented in Fig. 1 reported for different materials for high manganese austenitic TWIP steels ([59, 60] (a), Titanium [61] and Zirconium [62] (b), Mg and its alloys [63][64][65][66] (c), and a low stacking fault Cu-33Ni alloy [67] and high entropy CoCrFeMnNi alloy [68,69] (d) -see the cited papers for experimental details) are matched by the proposed model, Eq. ( 7), very well.…”

Section: Model Validation and Discussionmentioning

confidence: 55%

A phenomenological model of deformation twinning kinetics

Vinogradov

2021

Materials Science and Engineering: A

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“…Čapek et al observed that even a very small strain of 0.1% in Mg can lead to a formation of twins. [ 31 ] In other words, the twins observed in the LPBF Mg foam are formed due to thermal stress caused by rapid solidification. However, there is a need to conduct additional studies to identify the formation mechanism of twin‐like microstructures resulting from solidification.…”

Section: Resultsmentioning

confidence: 99%

A New Approach for Manufacturing Stochastic Pure Magnesium Foam by Laser Powder Bed Fusion: Fabrication, Geometrical Characteristics, and Compressive Mechanical Properties

et al. 2021

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Herein, stochastic pure magnesium foam using laser powder bed fusion (LPBF) is fabricated and its geometric characteristics and mechanical properties are investigated. As volumetric energy density (VED) increased from 20 to 40 J mm−3 by controlling process parameters, porosity changed to 42.7 and 40.5%, respectively. Furthermore, the average sizes of interior consolidated/pore areas were 154.6 μm/142.9 μm (20 J mm−3 VED) and 230.8 μm/182.2 μm (40 J mm−3 VED), respectively. Magnesium foam induces lack‐of‐fusion defects through variable control of the LPBF process, and as such defects are connected, open pore structures are suggested to be formed. Stochastic pure Mg foam is composed of a main α‐Mg phase and a small amount of MgO phases. Room temperature compression test results obtained compressive yield strengths of 37 MPa (20 J mm−3) and 46 MPa (40 J mm−3). Compared with conventional pure Mg foam with similar relative density, LPBF Mg foam had relatively greater mechanical properties. This is considered to be due to the fine twin‐like microstructure formed by rapid solidification during LPBF. In conclusion, with LPBF, a biocompatible Mg foam with an open pore structure and outstanding mechanical properties was manufactured efficiently.

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Twinning Evolution as a Function of Loading Direction in Magnesium

Cited by 10 publications

References 11 publications

Design of tailored biodegradable implants: The effect of voltage on electrodeposited calcium phosphate coatings on pure magnesium

Design of tailored biodegradable implants: The effect of voltage on electrodeposited calcium phosphate coatings on pure magnesium

A phenomenological model of deformation twinning kinetics

A New Approach for Manufacturing Stochastic Pure Magnesium Foam by Laser Powder Bed Fusion: Fabrication, Geometrical Characteristics, and Compressive Mechanical Properties

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