A kind of magnesium alloy and its structural strength strengthening method
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A technology of structural strength and magnesium alloys, applied in the field of magnesium-based alloys, can solve the problems of high refining difficulty, large proportion of tungsten-titanium alloys, insufficient strength of magnesium alloys, etc., to improve casting performance and machining performance, and stable product quality. , the effect of clear control methods
Active Publication Date: 2018-08-07
ZHEJIANG JUEXIN MICROELECTRONICS CO LTD
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Problems solved by technology
However, the tungsten-titanium alloy used in this patent offsets the outstanding advantages of magnesium-aluminum alloy due to its large specificity and high refining difficulty.
[0006] Therefore, aiming at the shortcomings of insufficient strength of cast magnesium alloys, it is necessary to invent a method for improving the structural strength of magnesium alloys
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Embodiment 1
[0026] A magnesium alloy is prepared from the following raw materials in mass percentage: Al 5.4%, Zn 0.56%, Ca 0.27%, rare earth element 0.1%, and the rest is Mg.
[0027] Further, the rare earth element is prepared from the following raw materials in mass percentage: 25% Nd, 35% Ce, 18% Y, 12% La, 5% Sc, 5% Sm.
Embodiment 2
[0029] A magnesium alloy is prepared from the following raw materials in mass percentage: 9.5% of Al, 4.35% of Zn, 0.83% of Ca, 0.4% of rare earth elements, and the rest is Mg.
[0030] Further, the rare earth element is prepared from the following raw materials in mass percentage: 45% Nd, 25% Ce, 12% Y, 8% La, 7% Sc, 3% Sm.
Embodiment 3
[0032] A magnesium alloy is prepared from the following raw materials in mass percentage: 7.5% of Al, 2.5% of Zn, 0.55% of Ca, 0.25% of rare earth elements, and the rest is Mg.
[0033] Further, the rare earth element is prepared from the following raw materials in mass percentage: 35% Nd, 30% Ce, 13% Y, 8% La, 10% Sc, 4% Sm.
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Abstract
The invention discloses a magnesium alloy and a structural strength improving method thereof. The magnesium alloy is prepared from Al, Zn, Ca, rare earth elements and Mg; and the structural strength improving method comprises the steps: preheating a crucible furnace, preserving the heat, adding an elementary substance of a magnesium alloy raw material and a protecting flux, meanwhile, introducing a protective gas, heating the crucible furnace to completely melt the elementary substance of the magnesium alloy raw material, carrying out filtration to remove the protecting flux floating on the surface of a liquid phase, further heating the crucible furnace, and carrying out refining to obtain a liquid magnesium alloy melt with a bright surface; adding fine magnesium carbonate particles into the liquid magnesium alloy melt to preserve heat, and further heating the crucible furnace to form a bright liquid phase; and rapidly cooling the bright liquid phase, pouring the bright liquid phase into a sand mould to carry out water quenching cooling, and carrying out subsequent forging and processing to obtain the magnesium alloy with improved structural strength. The structural strength improving method of the magnesium alloy, adopted by the invention is clear in control method, standard in technological process, stable in product quality, good in output effect and wide in application range.
Description
technical field [0001] The invention relates to the field of magnesium-based alloys, in particular to a magnesium alloy and a method for enhancing its structural strength. Background technique [0002] Magnesium alloy is an alloy material composed of magnesium element and other elements. It has many excellent properties such as low density, corrosion resistance, high deformation rigidity, high structural strength, large elastic modulus, good heat dissipation performance, and strong impact deformation capacity. Physical and chemical properties and mechanical characteristics. At present, magnesium-aluminum alloy is the most widely used, followed by magnesium-manganese alloy and magnesium-zinc alloy. Due to its light weight and high strength, magnesium alloy is widely used in aerospace technology, automobile manufacturing industry, pharmaceutical and chemical industry and other industrial manufacturing. field. [0003] There are three main classification methods of magnesium ...
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