Method and product for preparing zirconium-based metallic glass by selective laser melting
A technology of zirconium-based metallic glass and selective laser melting, which is applied in the directions of additive manufacturing, process efficiency improvement, additive processing, etc. The effect of neat structural edges and excellent mechanical properties
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Embodiment 1
[0033] Zirconium-based metallic glass Zr 57 Cu 15.4 Ni 12.6 Al 10 Nb 5 The preparation comprises the following steps:
[0034] (1) Weigh Zr, Cu, Ni, Al and Nb with a purity above 99.99 wt% according to the atomic molar ratio of 57:15.4:12.6:10:5.
[0035] In the atomization equipment, the high-speed inert gas argon gas flow is used to impact the alloy in the molten state after pre-alloying, and the molten alloy is broken by the impact of the gas flow, and the metal powder with a small size and a round shape is formed under the action of the surface tension of the liquid.
[0036] Zr prepared by gas atomization method 57 Cu 15.4 Ni 12.6 Al 10 Nb 5 (Vit106a) The metallic glass particles have a typical spherical structure, and the powder morphology is as follows figure 1 As shown, the surface adheres to or surrounds some small particle "satellite" particle powders. According to the results of energy spectrum, the elements are evenly distributed without obvious segregati...
Embodiment 2～5
[0045] The difference between embodiments 2-5 and embodiment 1 is that the laser power in step (3) is different. The laser powers of embodiments 2-5 are: 88w, 92w, 96w and 100w respectively.
[0046] Effect verification
[0047] The bottom surface of the metallic glass sample with a thickness of 2mm printed in Examples 1-5 is roughly ground with #400, #600, #800 sandpaper, and the upper surface is finely ground with #1000, #1200, #1500, #2000 sandpaper , and use the X-ray diffraction analysis method to analyze its phase composition with the finely ground upper surface as the reference plane. ° / min, the metal powder obtained in the embodiment 1 step (1) is carried out X-ray diffraction analysis by the above-mentioned parameters simultaneously, the result is as follows image 3 shown by image 3 It can be seen that a large cooling rate can be achieved by adopting the airflow impact method. According to the X-ray diffraction results (XRD) of the powder, there is an obvious diff...
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Abstract
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