Novel FeCrMnVSix high-entropy alloy coating and preparation method thereof

[0037] (1) The FeCrMnVSix (x=0) high-entropy alloy powder ratio is carried out according to the molar ratio: Fe 25%, Cr 25%, Mn 25%, V 25%, and each metal powder is weighed by an electronic balance.

[0038] The sources of each metal element powder are listed in the table below

[0039]

[0040]

[0041] (2) The pretreatment process of the substrate is as follows: the metallographic grinding and polishing machine grinds the cladding surface of the substrate 410 steel (1Cr13) to 800# to achieve the purpose of removing oxides on the surface of the substrate, and then cleans it with ethanol and puts it into a vacuum oven for use. .

[0042] (3) After drying the metal powder weighed in step (1), spread it on a surface such as figure 1 In the mold, the substrate processed in step (2) is embedded in the mold and compacted, such as figure 2 As shown, a prefabricated high-entropy alloy powder layer is formed on the surface of the substrate, and the thickness of the prefabricated

[0050] The difference in this example from Example 1 is: (1) In accordance with the molar ratio, FeCrMnVSix (x=0.5) high-entropy alloy powder ratio: Fe 22.2%, Cr 22.2%, Mn 22.2%, V 22.2%, Si 11.2 %; (4) the scanning speed is 5mm / s. The rest of the operation process and parameter setting are the same as in Example 1, and a FeCrMnVSi x (x=0.5) high-entropy alloy coating is obtained, which is referred to as FeCrMnVSi0.5 for short.

[0051] Characterization and Testing:

[0052] ①XRD test, the results are as follows image 3 Medium Si 0.5 As shown in the curve, it is proved that the obtained coating is a high-entropy alloy, and the high-entropy alloy coating FeCrMnVSi0.5 is a single solid solution phase.

[0053] ②Hardness test, the microhardness of the laser cladding high-entropy alloy coating was measured by a digital display hardness tester. The results are as follows Figure 5 (a) Si 0.5 curve and Figure 5 As shown in (d), the average hardness of the alloy coating is 329

[0056] The difference in this example from Example 1 is: (1) FeCrMnVSi is carried out according to the molar ratio 1 (x=1) High-entropy alloy powder ratio: Fe 20%, Cr 20%, Mn 20%, V 20%, Si 20%; (4) The scanning speed is 5 mm / s. The rest of the operation process and parameter setting are the same as in Example 1, and a FeCrMnVSix (x=1) high-entropy alloy coating is obtained, which is referred to as FeCrMnVSi1 for short.

[0057] Characterization and Testing:

[0058] ①XRD test, the results are as follows image 3 Medium Si 1 As shown in the curve, it is proved that the obtained coating is a high-entropy alloy, and the high-entropy alloy coating FeCrMnVSi1 is a single solid solution phase.

[0059] ②SEM test, results Figure 4 shown, by Figure 4 It can be seen that the high-entropy alloy coating is dense, almost free of cracks and pores, and the alloy is of high quality, and the EDS characterization results show that the distribution of alloy elements is uniform.

[0060]