Low anisotropic magnetic alloy material and preparation method thereof

An anisotropic and magnesium alloy technology, applied in the field of magnesium alloy materials and its preparation, can solve the problems that cannot be popularized and used in a large area, the price of rare earth elements is high, and the improvement range is not large, so as to achieve grain refinement and improve mechanical properties , Improve room temperature ductility and deformation effect

Inactive Publication Date: 2013-01-16

CHONGQING UNIV

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Problems solved by technology

However, the above two processes are too complicated compared with ordinary extrusion and rolling processes, which increases the cost to a certain extent, and cannot be widely used

[0004] Another way to improve the plasticity and anisotropy of magnesium alloy...

Method used

The present invention has added Li and Al-5Ti-1B intermediate alloy in AZ31 magnesium alloy, has reached weakening magnesium alloy basal plane texture intensity, reduces magnesium alloy anisotropy, refines crystal grain and improves magnesium alloy mechanical property The purpose of adding Li can play two roles: one is that the addition of Li can reduce the density of the material; the other is that the addition of Li reduces the c/a value of the hexagonal α-Mg, and the atomic distance decreases ...

Abstract

The invention discloses a low anisotropic magnesium alloy material and a preparation method thereof. The low anisotropic magnetic alloy material comprises the following components in percentages by weight: 1.0% of Li, 2.5-3.5% of Al, 0.7-1.3% of Zn, 0.2-0.8% of Mn, 0.3% of Al-5Ti-1B, not more than 0.3% of impurity and the balance of magnesium. The preparation method comprises the following steps of: heating pure lithium at a formula amount, an Al-5Ti-1B intermediate alloy and an AZ31 magnesium alloy to 720 DEG C under the conditions of vacuum and inert gas, after completely smelting the alloy, thermally insulating at 700 DEG C and standing for 15 minutes, and pouring the smelted alloy into a mold. According to the invention, the Li and the Al-5Ti-1B intermediate alloy are added in the AZ31 magnesium alloy, so that the intensity of a magnesium alloy basal plan texture is reduced, the anisotropy of the magnetism alloy is reduced, grains are refined, and the mechanical property of the magnesium alloy is improved.

Technology Topic

Mechanical properties of carbon nanotubesMagnesium alloy +3

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Examples

Experimental program(1)
Effect test(1)

Example Embodiment

[0036] Example 1

[0037] The low anisotropy magnesium alloy material of this embodiment is composed of the following components in terms of mass percentage:

[0038] Li 1.0%;

[0039] Al 3.0%;

[0040] Zn 1.0%;

[0041] Mn 0.3%;

[0042] Al-5Ti-1B 0.3%;

[0043] Impurity ≤0.3%;

[0044] Magnesium balance;

[0045] The mass percentage content of each component in the Al-5Ti-1B is: Ti 5%; B 1%; the balance is Al.

[0046] In the preparation method of the low-anisotropy magnesium alloy material in this embodiment, pure lithium, Al-5Ti-1B master alloy and AZ31 magnesium alloy in formula amounts are heated to 720° C. under the condition of vacuuming and passing inert gas, and then waiting for After the alloy is completely melted, it is kept at 700°C for 15 minutes, and then the molten alloy liquid is poured into the mold to obtain the as-cast magnesium alloy; the as-cast magnesium alloy is kept at 380°C for 3 hours and then extruded into a thickness of 2mm and a thickness of 120mm. Wide magnesium alloy sheet (extruder tonnage 1250T, extrusion barrel diameter 165mm, extrusion ratio: 89).

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