Magnesium-based composite material reinforced with titanium or titanium alloy fibers and its preparation method
A composite material and fiber reinforced technology, which is applied in the field of skeleton-reinforced magnesium or magnesium alloy-based composite materials and their preparation, can solve the problem of the lack of designability and controllability of the microstructure of the composite material, and the easy introduction of pores, impurities, and organization. Coarse structure and other problems, to achieve the effects of strong designability, improved room temperature and high temperature strength, and simple preparation process
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Embodiment 1
[0034] In this example, a magnesium-based composite material reinforced with titanium fibers having a directional braided structure was prepared. The raw materials used in this embodiment are pure titanium wire (diameter 70 μm, purity 99.5wt%) and pure magnesium (purity 99.5wt%). Concrete preparation process is as follows:
[0035] 1) The titanium wires are hand-woven into a titanium mesh according to the orientation angles perpendicular to each other, and the titanium mesh is cut into a circular mesh with a diameter of 6 cm, and the mesh is tiled and stacked according to the same orientation angle, and the number of stacked layers is 24 Layer, fix the stacked titanium mesh with titanium wire, compact the skeleton with a pressure of 10 MPa along the direction perpendicular to the mesh, unload after holding the pressure for 10 minutes, and obtain a titanium fiber reinforced body skeleton with a directional weaving structure. Such as figure 1 As shown, the diameter of the tita...
Embodiment 2
[0040] In this example, an AZ91D magnesium alloy-based composite material reinforced with TC4 titanium alloy fibers having a helical braided structure was prepared. The raw materials used in this embodiment are TC4 titanium alloy wire (70 μm in diameter, 99.9 wt% in purity) and AZ91D magnesium alloy (99.5 wt% in purity). Concrete preparation process is as follows:
[0041] 1) Manually weave TC4 titanium alloy wires into a titanium alloy mesh according to the orientation angles perpendicular to each other, cut the titanium alloy mesh into a circular mesh with a diameter of 6cm, and align the mesh according to the orientation difference of 7.5° between adjacent layers The slices are tiled and stacked, and the number of stacked layers is 36 layers. The stacked titanium alloy mesh was fixed with TC4 titanium alloy wire, and the skeleton was compacted with a pressure of 20 MPa along the direction perpendicular to the mesh sheet, and unloaded after holding the pressure for 10 minut...
Embodiment 3
[0046] In this example, a magnesium-based composite material reinforced with titanium fibers having a three-dimensional braided structure was prepared. The raw materials used in this embodiment are pure titanium wire (diameter 70 μm, purity 99.5wt%) and pure magnesium (purity 99.5wt%). The specific preparation process is as follows
[0047] 1) Using the three-dimensional overall weaving method, the pure titanium wire is fed into the weaving machine, and the machine is controlled to intersperse in sequence according to the warp direction-weft direction-normal direction, and the pure titanium wire is woven into a whole prefabricated cuboid with a three-dimensional interwoven structure The size of the preform is 70mm×60mm×50mm, the diameter of the pure titanium fiber in the preform is 70 μm, and the porosity is 59.8%.
[0048] 2) The operation is the same as step 2) in Example 1.
[0049] 3) The operation is the same as step 3) in Example 1 to obtain a magnesium-based composite...
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Abstract
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