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ISSN: 2213-9567

Ameliorating the re/dehydrogenation behaviour of MgH2 by zinc titanate addition

Magnesium hydride (MgH2) is the most feasible and effective solid-state hydrogen storage material, which has excellent reversibility but initiates decomposing at high temperatures and has slow kinetics...

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Assessment of a two-surface plasticity model for hexagonal materials

A computationally efficient two-surface plasticity model is assessed against crystal plasticity. Focus is laid on the mechanical behavior of magnesium alloys in the presence of ductility-limiting defects,...

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Regulating local coordination environment of Mg−Co single atom catalyst for improved direct methanol fuel cell cathode

Fuel cells operated with a reformate fuel such as methanol are promising power systems for portable electronic devices due to their high safety, high energy density and low pollutant emissions. However,...

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Effects of temperature on critical resolved shear stresses of slip and twining in Mg single crystal via experimental and crystal plasticity modeling

•Effect of temperature on the CRSSs of slips and twinning is evaluated in Mg single crystals.•Slips traces are used specially to define various deformation modes of Mg.•VPSC-GA modeling is proved to...

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The misalignment between degradation rate and mechanical integrity of Mg-Zn-Y-Nd alloy during the degradation evaluation in modified Hanks' solutions

The degradation behavior of biodegradable Mg alloys has become a research hotspot in the fields about biodegradable metallic materials. While the most of the related publications mainly focused on the...

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TiO2@C catalyzed hydrogen storage performance of Mg-Ni-Y alloy with LPSO and ternary eutectic structure

A designed Mg88.7Ni6.3Y5 hydrogen storage alloy containing 14H type LPSO (long-period stacking ordered) and ternary eutectic structure was prepared by regulating the alloy composition and casting. The...

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Comparison of the effects of submerged laser peening, cavitation peening and shot peening on the improvement of the fatigue strength of magnesium alloy AZ31

•Fatigue strength of magnesium alloy AZ31B was improved by peening methods.•AZ31B was treated by submerged laser peening, cavitation peening and shot peening.•At submerged LP (SLP), laser ablation impact...

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Formation and transformation of metastable LPSO building blocks clusters in Mg-Gd-Y-Zn-Zr alloys by spinodal decomposition and heterogeneous nucleation

To study the formation and transformation mechanism of long-period stacked ordered (LPSO) structures, a systematic atomic scale analysis was conducted for the structural evolution of long-period stacked...

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Interfacial microstructure evolution for coordinated deformation of Mg/Al composite plates by asymmetrical rolling with differential temperature rolls

•Composite plates of AZ31B and 6061Al alloy with different thickness ratios were prepared by asymmetrical rolling with differential temperature rolls.•Differences in microstructural evolution of intermetallic...

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One developed finite element model used in nano-layered flaky Ti2AlC MAX ceramic particles reinforced magnesium composite

As one novel reinforcement used in magnesium composite, nano-layered flaky ternary MAX particle exhibits interesting anisotropic ceramic and metal properties. In order to accurately simulate the mechanical...

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Maximizing precipitation hardening effect enables ultrahigh strength in a coarse-grained Mg-13Gd forging alloy

In this work, a new strategy for achieving ultrahigh strength in the coarse-grained Mg-Gd binary alloy via utilizing recrystallization texture hardening and maximizing precipitation strengthening has...

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Effect of multifunction cavitation using phosphoric acid on fatigue and surface properties of AZ31 magnesium alloy

Magnesium alloy is attractive for lightweight construction but often suffers from poor corrosion resistance and low strength. Cavitation processing with chemicals, i.e., multifunction cavitation (MFC),...

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Corrosion resistance of a calcium carbonate coating prepared by ultrasound-assisted chemical conversion in calcium disodium edetate solution

•An anticorrosive CaCO3 coating via ultrasound treatment on AZ41 Mg alloy was prepared.•The compact CaCO3+(Mg,Ca)CO3 dual layer possesses a thickness of ∼3 um.•(Mg,Ca)CO3 inner layer plays an important...

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Enhanced oxidation and overheating resistance of the extruded Mg–Zn–Al–Mn magnesium alloy by Calcium addition

The effects of Ca addition on the microstructure and oxidation properties of a new Mg alloy were studied. The oxidation behavior of the alloys was analyzed by thermal analysis and material characterization...

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Lithium mapping in a Mg-9Li-4Al-1Zn alloy using electron energy-loss spectroscopy

Magnesium-lithium alloys with high lithium content have been attracting significant attention because of their low density, high formability and corrosion resistance. These properties are dependent...

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Corrosion and corrosion-fatigue behavior of magnesium metal matrix composites for bio-implant applications: A review

Recently, the topic of bioresorbable metals, with much focus on magnesium for bone implant applications, has been an area of considerable investigation. Indeed, it could be argued that magnesium is...

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Hydrogen absorption/desorption cycling performance of Mg-based alloys with in-situ formed Mg2Ni and LaHx (x = 2, 3) nanocrystallines

Aiming to elucidate the hydrogen absorption/desorption cycling properties of Mg-based alloys with in-situ formed Mg2Ni and LaHx (x = 2, 3) nanocrystallines, the hydrogen storage cycle stability, hydriding/dehydriding...

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Developing super-hydrophobic and corrosion-resistant coating on magnesium-lithium alloy via one-step hydrothermal processing

Formation of super-hydrophobic and corrosion-resistant coatings can provide significant corrosion protection to magnesium alloys. However, it remains a grand challenge to produce such coatings for magnesium-lithium...

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Finite element analysis using elasto-visco-plastic self-consistent polycrystal model for E-form Mg sheet subjected to bending

The mechanical behavior of a magnesium alloy E-form under bending was investigated using the elasto-visco-plastic polycrystal model (ΔEVPSC) and its finite element (FE) implementation (ΔEVPSC-FE) developed...

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Influence of second phase precipitates on mechanical and in-vitro corrosion behaviour of Mg-4Zn-0.5Ca-0.8Mn alloy in optimum homogenized conditions

•Homogenization parameters are optimized through thermodynamic-kinetic calculations.•24 h of homogenization at 633 K sufficiently disrupts precipitate interconnectivity.•Dissolution of coarse Ca2Mg6Zn3...

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Generating micro/nanostructures on magnesium alloy surface using ultraprecision diamond surface texturing process

•The ultraprecision diamond surface texturing process was proposed to generate the micro/nanostructures on the magnesium surfaces.•The finite element model was established to simulate the machining...

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Production of high-purity Mg metal from dolomite through novel molten salt electrolysis and vacuum distillation

In this study, a novel Mg production process for producing high-purity Mg metal from dolomite was developed. When the electrolysis of calcined dolomite was conducted using Cu cathode and C anode in...

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Microstructures and electrochemical behaviors of casting magnesium alloys with enhanced compression strengths and decomposition rates

nMg-xZn-Zr-SiC alloys are designed and fabricated with casting process.nAlloys display floccules, matrixes and second phases with discontinuous reticular structures.nMaterials guarantee fast decomposition...

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Dissolution and reprecipitation of 14H-LPSO structure accompanied by dynamic recrystallization in hot-extruded Mg89Y4Zn2Li5 alloy

We investigate the variation induced in long-period stacking ordered (LPSO) structures, dynamic recrystallization (DRX), and mechanical performance of hot-extruded Mg89Y4Zn2Li5 alloys fabricated at...

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Twin-twin geometric structure effect on the twinning behavior of an Mg-4Y-3Nd-2Sm-0.5Zr alloy traced by quasi-in-situ EBSD

We studied the microstructure evolution of Mg-4Y-3Nd-2Sm-0.5Zr alloy by quasi-in-situ electron backscatter diffraction (EBSD) along with several strains under compression tests, which provided direct...

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