Low thermal neutron absorption cross-section medium entropy alloy with nano-precipitated phase and preparation method
A technology of nano-precipitated phases and entropy alloys, which is applied in the field of low-thermal neutron absorption cross-section entropy alloys and its preparation, and can solve the problems of unusable core cladding materials and other issues
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Embodiment 1
[0052] Use pure metals with a purity of more than 99.9% as raw materials. After removing scale from the metal raw materials, they are accurately weighed according to the ratio of Fe: 35%, Ni: 35%, Cr: 24%, Ti: 2%, and Al: 4%. Proceed to the ingredients. Melting is carried out in a vacuum induction melting furnace, and after the melting is completed, the melt is poured into a mold for cooling to obtain a medium-entropy alloy ingot. After the ingot is sealed, solution treatment is carried out, and after 10 hours of isothermal at 1200° C., it is water quenched to obtain a solid solution alloy. After removing scale, it is cold rolled, and the cold rolling deformation is 30%. Then keep it at 1000°C for 2 hours and then water quench to obtain the recrystallized structure. Finally, the recrystallized material was kept at 600°C or 800°C for 1 hour, 10 hours and 48 hours to obtain medium-entropy alloys containing dispersed nano-precipitated phases with different volume fractions and s...
Embodiment 2
[0055] Use pure metals with a purity of more than 99.9% as raw materials. After removing scale from the metal raw materials, they are accurately weighed according to the ratio of Fe: 33.5%, Ni: 33.5%, Cr: 24%, Ti: 2%, and Al: 7%. Proceed to the ingredients. Melting is carried out in a vacuum induction melting furnace, and after the melting is completed, the melt is poured into a mold for cooling to obtain a medium-entropy alloy ingot. After the ingot is sealed, solution treatment is carried out, and after 10 hours of isothermal at 1100° C., it is water quenched to obtain a solid solution alloy. After removing scale, it is cold rolled, and the cold rolling deformation is 80%. Then, the rolled plate is directly kept at 700° C. for 1 hour to obtain a medium-entropy alloy containing dispersed nano-precipitated phases.
Embodiment 3
[0057] Use pure metal with a purity of more than 99.9% as the raw material. After the metal raw material is descaled, it is accurately weighed according to the ratio of Fe: 25%, Ni: 40%, Cr: 25%, Ti: 4%, Al: 6%. Proceed to the ingredients. Melting is carried out in a vacuum induction melting furnace, and after the melting is completed, the melt is poured into a mold for cooling to obtain a medium-entropy alloy ingot. After the ingot is sealed, it is subjected to solid solution treatment, and isothermally held at 1200°C for 10 hours, then water quenched to obtain a solid solution alloy. The solid-dissolved material is kept at 600° C. for 1 hour to obtain a medium-entropy alloy containing dispersed nano-precipitated phases.
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