High-plasticity non-necking high-entropy alloy and preparation method thereof
A high-entropy alloy and high-plastic technology, which is applied in the field of high-plasticity non-necked high-entropy alloy and its preparation, can solve the problem of tensile data hindering the practical application of high-entropy alloy, less attention to tensile properties, high-entropy alloy retention, etc. problem, to achieve the effect of excellent room temperature plasticity, improved strength and plasticity, and uniform distribution of strain field
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Embodiment 1
[0043] This embodiment discloses a high plasticity, no necking high entropy alloy, its general formula is: CoFeNi 2 V 0.5 Mo 0.2 , wherein, a=1, b=1, c=2, d=0.5, e=0.2, and the ratio is mole percent. The alloy was solidified without electromagnetic stirring. The purity of the Co, Fe, Ni, V and Mo raw materials are all higher than 99.5wt.%.
[0044] The CoFeNi 2 V 0.5 Mo 0.2 The preparation method of high entropy alloy is:
[0045] S1: Batching, mechanically remove the scale on the surface of each metal raw material before batching, and clean it with alcohol in an ultrasonic instrument; the total weight of each alloy ingot is 2.5kg, of which Co 532.24g, Fe 504.37g, Ni 1060.08g, V230.03g, Mo 173.29g. Place the prepared metal raw materials inside the pre-dried BN furnace, place the high melting point and volatile Mo and V metals in the lower part of the crucible, and place other Co, Fe and Ni metals with relatively low melting points and good fluidity Place on top of the...
Embodiment 2
[0053] This embodiment discloses a high plasticity, no necking high entropy alloy, its general formula is: CoFeNi 2 V 0.5 Mo 0.2 , wherein, a=1, b=1, c=2, d=0.5, e=0.2, and the ratio is mole percent. The purity of the Co, Fe, Ni, V and Mo raw materials are all higher than 99.5wt.%.
[0054] During the pouring process, when the molten metal is completely poured into the MgO mold covered with coils, the 50Hz AC power supply is turned on, and the electromagnetic induction effect caused by it acts to stir the molten metal, and the power is turned off after the molten metal is completely solidified.
[0055] The CoFeNi 2 V 0.5 Mo 0.2 The preparation method of high entropy alloy is:
[0056] S1: Batching. Before batching, use mechanical method to remove the oxide skin on the surface of each metal raw material, and clean it with alcohol in an ultrasonic instrument. The total weight of each alloy ingot is 2.5kg, including Co 532.24g, Fe504.37g, Ni 1060.08g, V230.03g, Mo 173.29g...
Embodiment 3
[0066] This embodiment discloses a high plasticity, no necking high entropy alloy, its general formula is: CoFeNi 2 V 0.5 Mo 0.6 , wherein, a=1, b=1, c=2, d=0.5, e=0.6, and the ratio is mole percent. The purity of the Co, Fe, Ni, V and Mo raw materials are all higher than 99.5wt.%.
[0067] The CoFeNi 2 V 0.5 Mo 0.6 The preparation method of high entropy alloy is:
[0068] S1: Batching. Before batching, use mechanical method to remove the oxide skin on the surface of each metal raw material, and clean it with alcohol in an ultrasonic instrument. The total weight of each alloy ingot is 2.5kg, including 445.02g of Co, 421.72g of Fe, 886.37g of Ni, 384.67g of V, and 362.23g of Mo. Place the prepared raw materials inside the pre-dried BN furnace, place the Mo and V metals with high melting points and volatiles in the lower part of the crucible, and place other Co, Fe and Ni metals with relatively low melting points and good fluidity. on top of the crucible.
[0069] S2: P...
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