A method for compensating heating assisted free forging to produce difficult-to-deform nickel-based superalloys
A technology of nickel-based superalloy and compensatory heating, which is applied in the field of superalloy manufacturing, can solve the problems of narrow thermal processing temperature range, and achieve the effects of facilitating recrystallization, increasing the opening/final forging temperature, and improving the forgeability
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Embodiment 1
[0046] 1. Specifications of finished bar: Φ250mm
[0047] 2. Mechanical properties: The heat treatment parameters of all mechanical properties test samples are as follows:
[0048] Solution treatment: 995℃~1035℃, heat preservation for 4 hours, water cooling;
[0049] Stabilization heat treatment: 845°C±10°C, heat preservation for 4±0.5 hours, air cooling;
[0050] Aging heat treatment: 760°C±10°C, heat preservation for 16±1 hours, air cooling.
[0051] The mechanical property of bar head / tail in the embodiment 1 of table 1
[0052]
[0053]
[0054] 3. Ultrasonic inspection
[0055] The bars are subjected to 100% ultrasonic inspection one by one, which meets the requirements of Φ1.5mm flat-bottomed holes in GB / T4162-2008.
[0056] 4. High-magnification tissue
[0057] See grain size Figure 5 . The overall grain size is 6 grades, and the difference is less than or equal to 2 grades.
Embodiment 2
[0059] 1. Specifications of finished bar: Φ250mm
[0060] 2. Mechanical properties:
[0061] Heat treatment system for all mechanical properties testing samples:
[0062] Solution treatment: 995℃~1035℃, heat preservation for 4 hours, water cooling;
[0063] Stabilization heat treatment: 845°C±10°C, heat preservation for 4±0.5 hours, air cooling;
[0064] Aging heat treatment: 760°C±10°C, heat preservation for 16±1 hours, air cooling.
[0065] The mechanical property of bar head / tail in the embodiment 2 of table 2
[0066]
[0067] 3. Ultrasonic inspection
[0068] The bars are subjected to 100% ultrasonic inspection one by one, which meets the requirements of Φ1.5mm flat-bottomed holes in GB / T4162-2008.
[0069] 4. High-magnification tissue
[0070] See grain size Figure 6 . The overall grain size is 6.5 grades, and the grade difference is less than or equal to 2 grades.
Embodiment 3
[0072] 1. Specifications of finished bar: Φ250mm
[0073] 2. Mechanical properties:
[0074] Heat treatment system for all mechanical properties testing samples:
[0075] Solution treatment: 995℃~1035℃, heat preservation for 4 hours, water cooling;
[0076] Stabilization heat treatment: 845°C±10°C, heat preservation for 4±0.5 hours, air cooling;
[0077] Aging heat treatment: 760°C±10°C, heat preservation for 16±1 hours, air cooling.
[0078] The mechanical property of bar head / tail in the embodiment 3 of table 3
[0079]
[0080] 3. Ultrasonic inspection
[0081] The bars are subjected to 100% ultrasonic inspection one by one, which meets the requirements of Φ1.5mm flat-bottomed holes in GB / T4162-2008.
[0082] 4. High-magnification tissue
[0083] See grain size Figure 7 . The overall grain size is 6 grades, and the difference is less than or equal to 2 grades.
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