Dual-phase Mg-Li-Zn-Y magnesium-lithium alloy enhanced by effectively utilizing rare earth element Y and preparation method
A rare earth element, magnesium-lithium alloy technology, applied in the field of magnesium-lithium alloys, can solve the problems of low absolute strength, large quasi-crystalline phase volume fraction, low-density strength and other problems of magnesium-lithium alloys, and achieve low cost, good plasticity, and stress concentration elimination Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0024] Ⅰ), the composition of the magnesium-lithium alloy used
[0025] Use quasi-crystal strengthened dual-phase Mg-Li-Zn-Y alloy, its chemical composition (weight percentage composition) is: lithium content is 8%; Zinc content is 3%; Yttrium content is 0.5%; Magnesium balance; Alloy The Zn / Y ratio is 6.
[0026] Ⅱ), alloy smelting
[0027] The alloy is smelted in a vacuum smelting furnace under the protection of argon, and after being kept at 770°C for 4 hours, it is cast in the furnace.
[0028] Ⅲ), homogenization treatment
[0029] The as-cast quasicrystalline strengthened dual-phase Mg-Li-Zn-Y alloy was kept at 400°C for 8 hours, and tightly wrapped with aluminum foil to prevent the alloy from burning due to high temperature oxidation.
[0030] Ⅳ), plastic deformation
[0031] The homogenized alloy was hot-extruded at 350°C with an extrusion ratio of 10.
[0032] Ⅴ) Microstructure characterization
[0033] The preparation process of the sample for tissue observation...
Embodiment 2
[0037] Ⅰ), the composition of the magnesium-lithium alloy used
[0038] Use quasi-crystal strengthened dual-phase Mg-Li-Zn-Y alloy, its chemical composition (weight percentage composition) is: lithium content is 8%; Zinc content is 6%; Yttrium content is 1%; Magnesium balance; Alloy The Zn / Y ratio is 6.
[0039] Ⅱ), alloy smelting
[0040] Same as Example 1.
[0041] Ⅲ), homogenization treatment
[0042] Same as Example 1.
[0043] Ⅳ), plastic deformation
[0044] Same as Example 1.
[0045] Ⅴ) Microstructure characterization
[0046] The tissue observation method is the same as in Example 1. Optical observation results show that the volume fraction of the quasi-crystalline phase formed in the sample of Example 2 is 8.3%, and the corresponding photo is shown in Figure 1(b).
[0047] Ⅵ), mechanical performance test
[0048] Tensile sample processing and tensile performance testing methods are the same as in Example 1. The measured yield and tensile strengths of the al...
Embodiment 3
[0050] Ⅰ), the composition of the magnesium-lithium alloy used
[0051] Use quasi-crystal strengthened dual-phase Mg-Li-Zn-Y alloy, its chemical composition (weight percentage composition) is: lithium content is 8%; Zinc content is 8%; Yttrium content is 1%; Magnesium balance; Alloy The Zn / Y ratio was 8.
[0052] Ⅱ), alloy smelting
[0053] Same as Example 1.
[0054] Ⅲ), homogenization treatment
[0055]Same as Example 1.
[0056] Ⅳ), plastic deformation
[0057] Same as Example 1.
[0058] Ⅴ) Microstructure characterization
[0059] The tissue observation method is the same as in Example 1. Optical observation results show that the volume fraction of the quasi-crystalline phase formed in the sample of Example 3 is 12.5%, and the corresponding photo is shown in Figure 1(c).
[0060] Ⅵ), mechanical performance test
[0061] Tensile sample processing and tensile performance testing methods are the same as in Example 1. The measured yield and tensile strengths of the a...
PUM
| Property | Measurement | Unit |
|---|---|---|
| Strain rate | aaaaa | aaaaa |
| Tensile strength | aaaaa | aaaaa |
| Tensile strength | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More