High-modulus magnesium matrix composite material containing SiC particles and preparation method thereof
A technology of composite materials and particles, applied in the field of high-modulus magnesium-based composite materials, can solve the problems of low elastic modulus, poor elastic deformation resistance, and low elastic modulus of Mg-RE alloys, and achieve high room temperature strength and good Plasticity, Effect of High Elastic Modulus
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[0081] Furthermore, the present invention provides a method for preparing a high modulus magnesium-based composite material, including the following steps:
[0082] 1) Punch holes in the pure magnesium ingots with a diameter of 2.0-2.5cm; perform surface modification treatment on the SiC particles, dry them into the holes to obtain pure magnesium ingots with SiC particles;
[0083] 2) Melting and casting: Put the pure magnesium ingot containing SiC particles obtained in step 1) into an iron crucible and heat it to 730-750°C under an Ar atmosphere. After the pure magnesium ingot is melted, the melt is stirred, Raise the temperature to 770-780℃ quickly to melt and stir the pure zinc and other components of the intermediate alloy of the pure magnesium ingot, refine the slagging and casting, and obtain the ingot; control all the intermediate alloys to completely melt and refine the slagging until the casting time is less than or equal to 4 minute.
[0084] In the preparation method of t...
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[0090] Example 1. Preparation and performance identification of magnesium-based composite material of the present invention
[0091] In the embodiment of the present invention, according to Table 1 to Table 4 (X is selected from aluminum (Al), titanium (Ti), silver (Ag), zirconium (Zr), calcium (Ca), scandium (Sc), lanthanum (La) , Cerium (Ce), europium (Eu), praseodymium (Pr), promethium (Pm), samarium (Sm)) to prepare the magnesium-based composite materials respectively. The specific preparation methods are as follows Description:
[0092] 1. According to the designed high-modulus magnesium-based composite material distribution ratio, each component is taken, among which: Mg is added in the form of pure magnesium, and SiC particles are micron-sized β-SiC p (The particle size is 1.0-20μm) is added, Zn is added in the form of pure zinc, and the remaining components are added in the form of magnesium-based master alloy;
[0093] 2. Punch holes in pure magnesium ingots with a diameter...
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