Showing papers in "Journal of Magnesium and Alloys in 2016"

TL;DR: A comprehensive summary of state-of-the-art in fabricating magnesium-based composites by FSP is provided in this article, where the influence of the secondary phase particles and grain refinement resulted from FSP on the properties of these composites is also discussed.

TL;DR: In this article, the development and characterisation of magnesium-SiC-Gr hybrid composites through powder metallurgy route has been discussed, which exhibit increased hardness when compared to base material, attributed to the presence of hard SiC.

TL;DR: A review of hot tearing of magnesium alloys can be found in this paper, where the hot tearing criteria including recently developed Kou's criterion are summarized and compared, as well as the numeric simulation and assessing methods for hot tearing, factors influencing hot tearing and hot tearing susceptibility.

TL;DR: In this paper, the effect of grain refinement and grain size distribution on the corrosion behavior of alloy sheets was investigated by friction stir processing (FSP) to investigate the influence of grain size and grain refinement on corrosion behavior.

TL;DR: In this paper, the composites were fabricated by stir-casting method and GNPs were added in 1.5 and 3.0 wt.% into Mg-3wt.% Al-1.% Zn (AZ31) magnesium alloy.

TL;DR: In this paper, the effects of pre-homogenizing treatment on microstructure evolution, deformation mechanism, mechanical properties and tensile fracture morphology of hot-rolled AZ91 magnesium alloy were studied.

TL;DR: In this article, the effect of secondary phase amount and distribution on machining characteristics of Mg alloys has been investigated and it can be clearly understood that the presence of the secondary phase has a significant influence on cutting forces.

TL;DR: In this article, composite layers containing 0.8 %vol Al 2 O 3 nanoparticles were produced on AZ91 magnesium alloy by friction stir processing (FSP), and the treated layers were characterized using optical and scanning electron microscopes, as well as microhardness and wear testing units.

TL;DR: In this article, the influence of cerium nitrate in vanadate solutions on the properties of Ce-V conversion coatings on AZ31 magnesium alloys, and evaluated the self-healing behavior of the Ce−V conversion coating for AZ31nesium alloy.

TL;DR: In this article, the effect of strontium addition on hot deformation of AZ61 alloy was investigated by hot compression tests, and it was revealed that dynamic recrystallization phenomenon had occurred and controlled the thermomechanical behaviour of the alloys.

TL;DR: In this article, a low-cost method for melt purification of magnesium alloys, the melt self-purifying technology (MSPT), has been developed successfully based on a low temperature melt treatment (LTMT) without adding any fluxes.

TL;DR: The Mg97-xZn1Y2Gdx alloys were prepared by as-casting method by using potentiodynamic polarization, hydrogen evolution rate and mass loss measurements in 3% sodium chloride solution at room temperature as mentioned in this paper.

TL;DR: In this article, the influence of cutting parameters on microstructure, surface roughness and machining hardening were investigated by using the methods of single factor and orthogonal experiment.

TL;DR: In this article, four Mg-Gd-Y-Nd-Zr alloys were prepared by mold casting to investigate the effects of Nd/Gd ratios on microstructures and mechanical properties.

TL;DR: Cerium-based conversion coatings were formed on AZ91D magnesium alloy by immersion of the substrate in solutions containing Ce(NO3)3, H2O2 and ascorbic acid (HAsc) as mentioned in this paper.

TL;DR: In this paper, the hot workability behavior of cast-extruded AZ31B magnesium alloy is studied through hot compression testing, numerical modeling and microstructural analyses, and the authors use Johnson-Cook damage model in a 3D finite element simulation.

TL;DR: In this paper, the tensile deformation behavior and corresponding microstructure evolution of the Mg-4.7Gd-3.4Y-1.2Zn-0.5Zr (at. %) magnesium alloy with long period stacking structure (LPSO) were studied by electron backscatter diffraction (EBSD) and slip lines methods.

TL;DR: In this paper, the formation of hydride REH 2 is attributed to the surface reaction of Mg-RE alloys with water and the part of RE in solid solution in Mg matrix plays an important role in influencing the formation.

TL;DR: In this article, an overview about one thermodynamic database of multi-component Mg alloys is given, which includes thermodynamic descriptions for 145 binary systems and 48 ternary systems in 23-component (Mg,Ag,Al,Ca,Ce,Cu,Fe,Gd,K,La,Li,Mn,Na,Nd,Ni,Pr,Si,Sn,Sr,Th,Y,Zn,Zr) systems.

TL;DR: In this article, the corrosion behavior of extruded AZ61 magnesium alloy with different addition of yttrium ranging from 0 to 0.9% was investigated, and the electrochemical results showed that the pitting potential, time to pitting initiation, film and charge transfer resistances of the AZ61 specimens increased with the increase of Yttrium content.

TL;DR: In this article, a correlation between microstructure and wear behavior of AZX915 Mg-alloy reinforced with 12 wt% of TiC particles by stir-casting process is discussed.

TL;DR: In this article, the corrosion behavior of Mg-8Li-3Zn-Al alloy was investigated in neutral 3.5% NaCl aqueous solution by morphology observation and electrochemical tests.

TL;DR: In this paper, a new Mg-Al-Sn-RE alloy with high ductility at room temperature has been developed, and the microstructures were characterized as fully recrystallized grains with a lot of fragmented fine particles along the rolling direction.

TL;DR: In this article, a liquid state settling method was applied to fabricate TC4 spherical particle reinforced AZ91 alloy matrix composites, in which TC4 particles would settle down under the force of gravity.

TL;DR: In this article, the products of the reaction between MgO or Al 2 O 3 and 2 varieties of carbon (graphite, carbon black) in flowing argon atmosphere at a total pressure of around 1000 to 1600 Pa were studied using X-ray diffraction, and microstructure observations revealed the formation of metallic nanopowders with some by-products.

TL;DR: In this article, the authors investigated the properties of Mg Li nanowire under tension and compression to elicit property alteration due to Li alloying in Mg within hexagonal range.

TL;DR: In this article, the effect of strain and strain rate on texture evolution of an extruded Mg-6Al-3Zn alloy was assessed by compression tests with different strain rates.

TL;DR: In this article, the authors used electrodynamic treatment to reduce the level of residual stresses in repair welds, and as a consequence, the cost of the welding repair in restoring aircraft structures.

TL;DR: In this paper, low cycle fatigue behavior of extruded AZ80 magnesium alloy was investigated under uniaxial tension-compression at different strain amplitudes and strain rates, and the relationship between total strain energy density and fatigue life can also be described by the modified Morrow model.