Heat-treatment technology of high-plasticity nickel base alloy
A nickel-based alloy, high plasticity technology, applied in the field of heat treatment of high-plasticity nickel-based alloys, can solve the problems of increased alloy elongation, increased section shrinkage, poor alloy plasticity, etc., to reduce process time, increase strength, and improve The effect of production efficiency
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Embodiment 1
[0029] In this example, 1) The nickel-based powder alloy was prepared according to the following mass percentages: Co: 15.3%, Cr: 9.4%, Al: 4.7%, Ti: 1.8%, W: 5.2%, Mo: 4.1%, C: 0.43 %, Nb: 2.6, Hf: 0.23%, B: 0.010, Ni balance;
[0030] 2) The above-mentioned nickel-based powder alloy is treated by solid solution and aging process, and is subjected to vacuum induction melting and electroslag remelting to obtain 800*Ф80 bar with surface roughness Ra <1.6, use PREP powder milling equipment to process metal powder, put it into the sheath, and perform hot isostatic pressing;
[0031] 3) The hot isostatic pressing alloy tape sheath obtained in step 2) is heat treated, solution treated at 1040°C, kept in a muffle furnace for 2 hours, then taken out and cooled to room temperature in air, and then at 780°C The aging time is 8 hours; then the temperature is reduced to 680°C at a rate of 0.6°C / min, and the heat preservation is 8 hours. The entire heat treatment time is 22 hours. Table 3 sho...
Embodiment 2
[0033] In this embodiment, 1) The nickel-based powder alloy is prepared according to the following mass percentages: Co: 15.4%, Cr: 9.6%, Al: 4.8%, Ti: 1.7%, W: 5.5%, Mo: 3.8%, C: 0.36 %, Nb: 2.5, Hf: 0.26%, B: 0.008, Ni balance;
[0034] 2) The above-mentioned nickel-based powder alloy is subjected to vacuum induction melting and electroslag remelting to obtain a 700*Ф70 bar with a surface roughness of Ra <1.6, use PREP powder milling equipment to process into metal powder, and then put it into the sheath for hot isostatic pressing;
[0035] 3) The nickel-based powder alloy hot isostatically pressed in step 2) is subjected to heat treatment, solution treatment at 1060°C, and heat preservation in a muffle furnace for 5 hours, after which it is taken out and air-cooled to room temperature. , Aging at 750°C, the aging time is 7 hours; then the temperature is reduced to 610°C at a rate of 0.3°C / min, and the heat preservation is 7 hours. The entire heat treatment time is 25 hours. Tab...
Embodiment 3
[0037] In this example, 1) The nickel-based powder alloy was prepared according to the following mass percentages: Co: 15.6%, Cr: 9.1%, Al: 4.9%, Ti: 1.8%, W: 5.3%, Mo: 3.8%, C: 0.35 %, Nb: 2.5, Hf: 0.22%, B: 0.011, Ni balance;
[0038] 2) The above-mentioned nickel-based powder alloy is treated by solid solution and aging process, and is subjected to vacuum induction melting and electroslag remelting to obtain 800*Ф80 bar with surface roughness Ra <1.6, use PREP powder milling equipment to process into metal powder, and then put it into the sheath for hot isostatic pressing;
[0039] 3) The hot isostatic pressing alloy tape sheath obtained in step 2) is heat-treated, solution-treated at 1070°C, kept in a muffle furnace for 1 hour, then taken out and air-cooled to room temperature, and then at 800°C The aging time is 8 hours; then the temperature is reduced to 680°C at a rate of 1°C / min, and the heat preservation is 8 hours. The entire heat treatment time is 21 hours.
[0040] Table...
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