Mg-Li magnesium alloy and preparation method thereof
A technology of magnesium alloys and polymers, applied in prosthetics, coatings, medical science, etc., can solve the problems of increased strength of alloys at room temperature, reduced strength of alloys and corrosion resistance, etc., to improve low plasticity, make up for strength and Insufficient effect of corrosion resistance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0046] Embodiment 1, preparation Mg-Li-(Al, RE) alloy
[0047] The test materials used pure Mg (99.9wt.%), Li (99.9wt.%), Al (99.95wt.%) and RE (99.8wt.%).
[0048] Weigh the materials according to the following proportions:
[0049] (a) Li 3.3% and the balance of Mg; (b) Li 3.3%, Al 1% and the balance of Mg; (c) Li 8.5% and the balance of Mg; (d) Li 8.5%, Al 1% and the balance of Mg; (e) Li 3.5%, Al 2%, RE 2% and the balance of Mg; (f) Li 3.5%, Al 4%, RE 2% and the balance of Mg; (g) Li 8.5%, Al 2%, RE 2% and the balance of Mg; (h) Li 8.5%, Al 2%, RE 3.5% and the balance of Mg;
[0050] Put the fine magnesium ingot in a crucible and melt it under the protection of argon, then add the rest of the components weighed above to the molten Mg, stir for 5 minutes, rapidly heat the melt to about 720°C, keep it warm and statically After standing for 30 minutes, pour the molten material into a mold preheated to 300°C, grind the gate, anneal at 250°C for 12 hours, and extrude at 280°...
Embodiment 2
[0053] Example 2, Room temperature tensile properties of Mg-Li-(Al, RE) alloy
[0054] The Mg-Li-(Al, RE) alloy prepared in Example 1 was prepared as a tensile sample according to the ASTM-E8-04 tensile test standard, and the SiC water-resistant sandpaper was polished to 2000#, and the room temperature tensile test was carried out using a general tensile testing machine , the stretching speed is 1mm / min.
[0055] The tensile properties at room temperature of the Mg-Li-(Al, RE) alloy prepared by the present invention are as follows: figure 2 shown by figure 2 It can be seen that with the increase of Li content, the yield strength and tensile strength of the alloy decreased, and the elongation was greatly improved. The addition of aluminum element improves the mechanical strength and elongation of the alloy, and the addition of rare earth element improves the yield strength and tensile strength of the alloy, but has little effect on the elongation.
Embodiment 3
[0056] Example 3, Corrosion resistance of Mg-Li-(Al, RE) alloy
[0057] The Mg-Li-(Al, RE) alloy prepared in Example 1 was processed by wire cutting into Grinding and polishing to 2000# with sandpaper. Electrochemical experiments were then performed in Hank's simulated body fluid at 37°C.
[0058] The corrosion potential-corrosion current curve of the Mg-Li-(Al, RE) alloy obtained by the present invention is as follows image 3 shown.
[0059] The corrosion potential-corrosion current curve of the Mg-Li-(Al, RE) alloy prepared by the present invention is as follows image 3 It can be seen from the analysis of the figure that, for the alloy without RE element, the corrosion resistance of the alloy decreases with the increase of Li element content, which is manifested by the decrease of corrosion potential and the increase of corrosion current; the addition of Al element causes The decrease of the corrosion current of the alloy improves the corrosion resistance of the alloy...
PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| density | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More