High-plasticity two-phase yttrium-containing magnesium-lithium-aluminum alloy and preparation method thereof
An aluminum alloy, high plasticity technology, applied in the field of magnesium alloys and their plastic forming, can solve the problems of reduced corrosion resistance and thermal stability of materials, elongation of only 10-25%, and reduced plasticity of magnesium-lithium alloys. Effects of dispersion strengthening and plasticity, low extrusion force, low density
Examples
Embodiment 1
[0036] Step 1: Casting
[0037] (1) Weigh raw materials according to mass percentage: Li 10.73%, Al 4.49%, Y 0.52%, Zr 0.12%, Mg 84.14%, and put the weighed raw materials into a vacuum induction furnace.
[0038] (2) Put the weighed raw material into a vacuum induction furnace, fill it with argon gas in a vacuum state, and raise the temperature to the melting temperature under the protection of argon gas, and the melting temperature is 680°C; after the metal is completely melted, use Argon gas protection, heat preservation for 15 minutes under stirring, and then pour the melt into a metal mold to obtain an ingot;
[0039] (3) Heat treatment: Homogenize the ingot at 350±10°C for 12 hours.
[0040] Step 2: Equal channel angular extrusion process
[0041] Cut a sample of 22mm×22mm×120mm on the ingot, and at room temperature, coat the mixture lubricant of gasoline and graphite powder on the surface of the sample; the inner angle is φ=90° and the outer angle is Extrude in an eq...
Embodiment 2
[0044] Step 1: Casting
[0045] (1) Weigh raw materials according to mass percentage: Li 10.50%, Al 2.85%, Y 0.57%, Zr 0.18%, Mg 85.90%, and put the weighed raw materials into a vacuum induction furnace.
[0046] (2) Put the weighed raw material into a vacuum induction furnace, fill it with argon gas in a vacuum state, and raise the temperature to the melting temperature under the protection of argon gas, and the melting temperature is 720°C; after the metal is completely melted, use Argon gas protection, heat preservation for 10 minutes under stirring, and then pour the melt into a metal mold to obtain an ingot;
[0047] (3) Heat treatment: Homogenize the ingot at 350±10°C for 12 hours.
[0048] Step 2: Plastic deformation process of traditional extrusion
[0049]Heat the mold with an extrusion ratio of 9.7:1, the heating temperature is 35°C (normal temperature), and keep it warm for 2 hours; coat the surface of the sample with a mixture lubricant of gasoline and graphite p...
Embodiment 3
[0052] Step 1: Casting
[0053] (1) Weigh raw materials according to mass percentage: Li 9.80%, Al 4.50%, Y 0.65%, Zr 0.26%, Mg 84.79%, and put the weighed raw materials into a vacuum induction furnace.
[0054] (2) Put the weighed raw material into a vacuum induction furnace, fill it with argon gas in a vacuum state, and raise the temperature to the melting temperature under the protection of argon gas, and the melting temperature is 700 °C; after the metal is completely melted, use Argon gas protection, heat preservation for 5 minutes under stirring, and then pour the melt into a metal mold to obtain an ingot;
[0055] (3) Heat treatment: Homogenize the ingot at 350±10°C for 16 hours.
[0056] Step 2: Equal channel angular extrusion process
[0057] Cut a sample of 22mm×22mm×120mm from the ingot, and at room temperature, coat the surface of the sample with a mixture lubricant of gasoline and graphite powder, and put it in with an inner angle of φ=90° and an outer angle of ...
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Abstract
Description
Claims
Application Information
- IPC
- C22C23/00; C22C1/02; C22F1/06
- Inventors
- 康志新; 孔晶