A boron-containing rare earth-containing high-entropy alloy and its magnetic field treatment method
A rare earth high-entropy and magnetic field processing technology, applied in the field of boron-containing rare-earth high-entropy alloy and its toughening treatment, can solve the problems of limited performance, complicated procedures, difficult operation, etc., and achieves controllable operation process, high energy, The effect of grain refinement
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Embodiment 1
[0047] Put the processed boron-containing rare earth high-entropy alloy products into an alumina crucible and put them into a tube furnace. Set the holding temperature and holding time at 400°C for annealing treatment for 0.5h. After the setting is completed, vacuumize and feed the protective gas , and run the program for heat treatment, after the temperature rises to the treatment temperature, the magnetic field is applied. After the heat treatment, turn off the magnetic field, take the product out and cool it to room temperature in the air, and clean, finish, polish and polish the surface of the product to improve the efficiency of the magnetic field treatment; put the sample into the fixture and clamp it with a strong Magnet, the surface magnetic field strength of the strong magnet is 0.2T, wrap the whole static magnetic field device with thermal insulation fiber felt, immerse in -180~-190°C liquid nitrogen for cryogenic treatment, cryogenic holding time is 5h. The boron-co...
Embodiment 2
[0051] After the surface treatment of the boron-containing rare earth high-entropy alloy products after processing, the alloy is subjected to cryogenic magnetic field treatment according to the operation process of Example 1. It should be noted that in order to improve the treatment effect, the pulse magnetic field annealing treatment time and the static magnetic field The cryogenic treatment time was extended to 2h and 30h, respectively. The prolongation of cryogenic time will help the formation of precipitates, and the prolongation of annealing treatment time will help relieve the internal residual stress generated by the coupling of cryogenic field and magnetic field.
[0052] Figure 4 Shown is FeCoNi after 400℃ pulsed magnetic field annealing treatment for 2h, static magnetic field strength of 0.2T cryogenic treatment for 30h 1.5 CuB 0.5 Y 0.2 Scanning electron microscope electron diffraction pattern, it can be seen that compared with the crystal grains in Example 1, th...
Embodiment 3
[0055] After the surface treatment of the boron-containing rare earth-containing high-entropy alloy products after processing, the alloy was subjected to cryogenic magnetic field treatment according to the operation process of Example 2. It should be noted that, in order to further improve the treatment effect, the annealing temperature and the static magnetic field strength were respectively Increasing to 450℃ and 1T, the increase of magnetic field strength will help the formation of precipitates, and the increase of annealing temperature will help to further effectively relieve the internal stress residue generated by the coupling effect of cryogenic field and magnetic field.
[0056] Figure 6 FeCoNi after 450℃ pulsed magnetic field annealing treatment for 2h, static magnetic field strength of 1T cryogenic treatment for 30h 1.5 CuB 0.5 Y 0.2scanning electron microscope image. It can be seen from the figure that the submicron particle phase is further precipitated and eve...
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Abstract
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