magnesium alloy grain refinement in australia

Magnesium Alloys: Types, Properties and Appliions - …

Calcium increases grain refinement, which helps in controlling the metallurgy of the alloy [4]. Appliions Magnesium alloys cover a wide array of appliions, from automotive and aerospace appliions to electronic and biomedical uses. Structural appliions

Grain refinement, texture, and mechanical properties of …

Microstructure (including its uniformity), texture, and mechanical properties of Mg-Al-Zn-Mn alloy billets after radial-shear rolling (RSR) were investigated. RSR with the temperature in the interval 420–140 °C and true strain up to 2.63 was shown to lead to grain refinement down to 1.5–3.5 μm (as determined by optical microscopy).

Grain Refinement of Magnesium Alloys by Mg–Zr …

Abstract Although refinement of the as‐cast grain size of magnesium alloys by Zr is well established commercially, little research has been undertaken to optimize this refinement

Influence of zinc on the soluble zirconium content in …

Most zirconium-containing commercial magnesium alloys also contain zinc, which varies from similar to 0.5% to similar to 6.5% depending upon the given alloy system. Early work has suggested that the presence of zinc in the range from 3% to 5% could significantly increase the solubility of zirconium in magnesium, therefore enhancing the gain refinement of the final alloy by zirconium.

Grain-refinement mechanisms in titanium alloys | …

Grain-refinement mechanisms in titanium alloys - Volume 23 Issue 1 - M.J. Bermingham, S.D. McDonald, M.S. Dargusch, D.H. StJohn Despite the importance of the prior-β grain structure in determining the properties of titanium-based alloys, there are few published

3D Finite Element Modeling of Grains Refinement for Magnesium …

of AZ31 magnesium alloy. The simulation results and calculated Zener-Hollomon parameters showed that the grains of magnesium would be refined gradually during ES process. Keywords: AZ31 magnesium alloy, finite element modeling, grain refinement

The influence of CaO addition on grain refinement of …

The influence of CaO addition on grain refinement of cast magnesium alloys Ali, Y, Qiu, D, Jiang, B, Pan, F and Zhang, M 2016, ''The influence of CaO addition on grain refinement of cast magnesium alloys'', Scripta Materialia, vol. 114, pp. 103-107.

Importance of Grain Refinement and Modifiion of Aluminium …

alloy. 1.3 Grain Refinement of Light Alloys This study involves the grain refinement of light alloys like magnesium and aluminium. The use of this alloy plays an important role in achieving the relative grain size. The resulting grain size varies from few μm on

69.Grain Refinement on AZ31 Magnesium Alloy by …

Grain refinement in AZ31 magnesium alloy has been attempted by hot-rolling and annealing process. Two types of AZ31 alloys were used, in which manganese concentrations were different one another, 0.003 and 0.4 mass%. They are called AZ31 and AZ31.

Extraordinary Superplastic Ductility of Magnesium Alloy …

Extraordinary Superplastic Ductility of Magnesium Alloy ZK60 - Volume 20 Issue 6 - R. Lapovok, R. Cottam, P.F. Thomson, Y. Estrin Skip to main content Accessibility help We use cookies to distinguish you from other users and to provide you with a better experience on our websites.

US Patent Appliion for WROUGHT PROCESSED …

In order to improve the ductility or formability of a magnesium alloy, addition of rare earth elements or refinement of grain size is often used. However, conventional additional elements inhibit the action of grain boundary sliding for complementing plastic deformation.

Grain refinement effect of a pulsed magnetic field on as …

Grain refinement of Sn–Pb alloy under a novel coined pulsed magnetic field during solidifiion. Journal of Materials Processing Technology, Vol. 211, Issue. 3, p. 463. CrossRef

Frontiers | Ultrafine-Grained Magnesium Alloys for …

Magnesium alloys take a special place among the hydrogen storage materials, mainly due to their high gravimetric (7.6 mass %) and volumetric (110 kg m−3) hydrogen storage capacity. Unfortunately, the kinetics of hydrogenation and hydrogen release are rather slow, which limits practical use of magnesium-based materials for hydrogen and heat storage. Refining the microstructure of magnesium

Grain refinement in AZ91 magnesium alloy during …

Request PDF | Grain refinement in AZ91 magnesium alloy during thermomechanical processing | Microstructural changes during high-temperature extrusion and torsion of an AZ91 alloy (Mg–9Al–1Zn

Effect of Grain Refinement on Tensile Ductility in ZK60 …

Magnesium alloys are generally brittle owing to their HCP structure. In this study, improvement of tensile mechanical properties under dynamic loading has been demonstrated for a pure magnesium and a ZK60 magnesium alloy. The solution-treated ZK60 alloy

(PDF) Grain Refinement of Magnesium Alloys by Mg-Zr …

Grain Refinement of Magnesium Alloys by Mg-Zr Master Alloys: The Role of Alloy Chemistry and Zr Particle Nuer Density

Strengthening Mechanisms of Magnesium-Lithium …

Grain refinement only takes place in the aluminium-containing alloys with the grain size of 1 wt.% Al and 3 wt.% Al alloy being reduced to 103 μm and 110 μm, respectively. The aluminium-free alloy had a large grain size of 190 μ m [ 12 , 39 ].

Grain-refinement-of-AZ91D-magnesium-alloy-by-Al-Ti …

Grain-refinement-of-AZ91D-magnesium-alloy-by-Al-Ti-B-master-alloy-and-its-effect-on-mechanical - VIP VIP 100w VIP

Numerical investigation of grain refinement of …

Solidifiion experiment of Mg-4Y-3Nd-1.2Al (wt%) alloy cast in a step-like sand-mold casting shows that a slow cooling rather than a fast cooling leads to grain refinement during solidifiion with in-situ formed nucleant particles (Al2RE) in molten melt. A two

ULTRA FINE-GRAINED AZ31 MAGNESIUM ALLOY …

Results showed that the addition of 0.6% TiBAl had the strongest grain refinement effect, reducing the grain sizes by 54.5 and 48.5% in the extruded and ECAPed conditions, respectively. The observed grain refinement was partly due to the presence of the thermally-stable micron- and submicron-sized particles in the melt which act as nucleation sites during solidifiion.

Magnesium R&D Technology - Solidifiion

A New Analytical Methodology for the Assessment of Grain Refinement in Magnesium Alloys D.H. StJohn, Peng Cao, Ma Qian, M.A. Easton Kainer, KU editor (2006) Magnesium: Proceedings of the 7th International Conference on Magnesium Alloys and Their

A New Method for Grain Refinement in Magnesium …

A New Method for Grain Refinement in Magnesium Alloy- High Speed Extrusion Machining - Free download as PDF File (.pdf), Text File (.txt) or read online for free. grain

Grain refinement of AZ31 magnesium alloy by Al-Ti-C …

Grain refinement of AZ31 magnesium alloy by Al-Ti-C-Y master alloy___ 40|1 Grain refinement of AZ31 magnesium alloy by Al-Ti-C-Y master alloy___。JOURNAL OF RARE EARTHS, Vol. 26, No. 4, Aug

Ultrasonic Degassing & Ultrasonic Grain refinement in …

12/4/2016· Ultrasonic degassing & grain refinement in Molten Aluminium, Magnesium, Copper and Glass metal melts up to 1,800 C, can substantially improve the properties of castings, in particular, their

Grain refining mechanisms in magnesium alloys – An overview

grain refinement, it has been shown by a recent work [7], that fine and spherical primary magnesium crystals are obtained directly from the liquid state by grain refinement without any

Grain refinement of AZ91D alloy by intensive melt …

In this study, intensive melt shearing was achieved in a twin-screw mechanism to investigate its grain refining effect on AZ91D magnesium alloy. The refinement mechanism was discussed and the persistence of grain refinement after remelting and isothermal holding was also studied.

DOI: 10.1590/S1516-14392011005000017 Grain Refinement of AZ91D Magnesium Alloy …

Grain Refinement of AZ91D Magnesium Alloy by MgCO 3 Ti Jun Chen*, Xiang Dong Jiang, Ying Ma, Rui Quan Wang, Yuan Hao Key Laboratory of Gansu Advanced Nonferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China The grain