A kind of preparation method of multi-element high-entropy alloy
A multi-element high-entropy alloy technology, applied in the field of preparation of multi-element high-entropy alloys, can solve problems such as difficulty in obtaining medium and large-sized ingots, inability to scale up applications, and small alloy sizes, so as to achieve uniform mixing and uniformity control , size control uniform effect
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[0029] A method for preparing a multi-element high-entropy alloy, the multi-element high-entropy alloy is composed of at least five elements among the eight elements of Al, Cr, Fe, Nb, Ni, V, Ti, and Zr, and any two elements in the multi-element high-entropy alloy The atomic ratio between is 1:1, and the preparation steps are as follows:
[0030] Step 1: Prepare the raw materials, and select the specifications and types of the required raw materials according to the elements in the multivariate high-entropy alloy;
[0031] The raw material is a pure metal or an alloy composed of two elements in the multivariate high-entropy alloy.
[0032] The type of raw material is crumb or granular, and the size of the crumb is required to be ≤30mm in length, ≤8mm in width, and ≤1mm in thickness; the particle size of the granular material is required to be ≤12mm. In order to ensure the purity of the material, no bonding can be added during the preparation of the electrode block. The agent ...
Embodiment 1
[0048] A kind of AlCrFeNbTi quinary high-entropy alloy, its chemical composition is that the atomic ratio of each element is 1:1:1:1:1, take preparation 100kg this alloy as example, its preparation steps are as follows:
[0049] Step 1: The raw materials required to prepare 100 kg of AlCrFeNbTi five-element high-entropy alloy are as follows: 9.98 kg of Al beans, 18.87 kg of metal Cr particles, 20.26 kg of Fe scraps, 33.71 kg of Nb scraps, and 17.37 kg of titanium sponge.
[0050] Step 2: After weighing the raw materials according to the calculation result of Step 1, mix them evenly in a V-shaped mixer, and then divide them into 10 parts, each weighing 10kg.
[0051]Step 3: Press the mixture obtained in step 2 into electrode blocks, each weighing 10kg, 10 in total.
[0052] Step 4: Use the plasma arc welding method in the vacuum welding box to assemble and weld the electrode blocks prepared in Step 3 into consumable electrodes. The welding method is 5×1, and there are two piece...
Embodiment 2
[0063] A kind of AlCrFeNbNiVTiZr octanary high-entropy alloy, its chemical composition is that the atomic ratio of each element is 1:1:1:1:1:1:1:1, take preparation 100kg this alloy as example, its preparation steps are as follows:
[0064] Step 1: The raw materials required to prepare 100kg AlCrFeNbNiVTiZr eight-element high-entropy alloy are as follows: Al beans: 5.78kg, metal Cr particles 10.91kg, Fe scraps 11.72kg, Nb scraps 19.50kg, Ni scraps 12.32kg, high-purity vanadium 10.70kg , titanium sponge 10.05kg, zirconium sponge 19.15kg.
[0065] Step 2: After weighing the raw materials according to the calculation result of Step 1, mix them evenly in a V-shaped mixer, and then divide them into 10 parts, each weighing 10kg.
[0066] Step 3: Press the mixture obtained in step 2 into electrode blocks, each weighing 10kg, 10 in total.
[0067] Step 4: Use the plasma arc welding method in the vacuum welding box to assemble and weld the electrode blocks prepared in Step 3 into cons...
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