Magnesium alloy with special extruded bar texture and preparation method thereof
A magnesium alloy and rod technology, which is applied in the field of magnesium alloy materials, can solve the problems of the huge difference between tensile and compressive yield strength, etc., and achieve the effects of improving mechanical properties, reasonable process design, and improving anisotropy
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[0025] A method for preparing a magnesium alloy with a special extruded rod texture, comprising the following steps:
[0026] S1. According to the above metal content, the prepared billet is subjected to solution treatment and water quenching;
[0027] S2. Carry out extrusion pretreatment to the ingot after solid solution treatment, and heat it to a specified temperature in a heating furnace;
[0028] S3. Back-extruding and cooling the obtained pretreated sample to obtain a special magnesium alloy rod texture.
[0029] Preferably, the solution treatment temperature in the step S1 is 500-550° C., and the time is 8-16 hours.
[0030] Preferably, the heating temperature in the step S2 is 400-460°C.
[0031] Preferably, the extrusion speed in the step S3 is 0.1-1.0 m / s, and the extrusion temperature is 400-450°C.
[0032] Preferably, the extrusion ratio in the step S3 is 1:30-80. If the extrusion ratio is less than 1:30, the specific texture cannot be formed. If the extrusion r...
Embodiment 1
[0035] A magnesium alloy with a special extruded bar texture, the components and their mass percentages in the magnesium alloy are: Gd: 13%; the balance is Mg.
[0036] A method for preparing a magnesium alloy with a special extruded rod texture, comprising the following steps:
[0037] (1) Solid solution treating the prepared original ingot at 530° C. for 8 hours, and water quenching;
[0038] (2) Carry out extrusion pretreatment to the billet after solid solution treatment, heat in the electromagnetic induction heating furnace, the electromagnetic induction heating temperature is 440 ℃;
[0039] (3) Back-extrude the billet after pretreatment, the extrusion temperature is 450°C, the extrusion speed is 0.6m / s, the extrusion ratio is 1:60, and it is naturally cooled in the air.
[0040] Depend on figure 1 and figure 2 It is known that the grain refinement of the magnesium alloy sheet after extrusion is from 500 μm to below 30 μm, by image 3 It is known that the texture of...
Embodiment 2
[0042] A magnesium alloy with a special extruded bar texture. The components and their mass percentages in the magnesium alloy are: Gd: 18%, Nd: 5%, Zr: 1%, and the balance is Mg.
[0043] A method for preparing a magnesium alloy with a special extruded rod texture, comprising the following steps:
[0044] (1) Solid solution treating the prepared original ingot at 530° C. for 16 hours, and water quenching;
[0045] (2) Carry out extrusion pretreatment to the billet after solid solution treatment, heat in the electromagnetic induction heating furnace, the electromagnetic induction heating temperature is 440 ℃;
[0046] (3) Back-extrude the billet after pretreatment, the extrusion temperature is 450°C, the extrusion speed is 0.8m / s, the extrusion ratio is 1:60, and it is naturally cooled in the air.
[0047] After extrusion, the grain refinement of the magnesium alloy sheet is from 200 μm to below 30 μm. The alloy texture is (0002) plane perpendicular to the extrusion direction...
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