Austenitic stainless steel as well as preparation method thereof and application thereof
An austenitic stainless steel, mass percentage technology, applied in the field of austenitic stainless steel and its preparation, can solve the problems of the rise of irradiated DBTT, the corrosion and embrittlement of liquid lead and bismuth, and the difficulty of technical improvement, and achieves the removal of inclusions, microstructures and other problems. The effect of good stability, excellent resistance to lead and lead-bismuth liquid metal corrosion and radiation resistance
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[0033] The method for preparing austenitic stainless steel of the present invention can adopt vacuum induction smelting and vacuum arc consumable remelting process to obtain consumable remelted ingots, and then use forging to obtain the consumable remelted ingots.
[0034] Specifically, the preparation method may include the following steps:
[0035] S1. The raw materials of austenitic stainless steel are remelted by vacuum induction melting and vacuum arc consumable to obtain consumable remelted ingots.
[0036] Step S1 may further include the following steps:
[0037] S1.1. Choose polysilicon, nickel plate, pure iron, metallic molybdenum strip, metallic chromium, carbon, boron-iron alloy, metallic manganese and sponge titanium as raw materials. Wherein, the mass percentage of boron element in the boron-iron alloy is 15-20%.
[0038] Weigh each raw material according to the content of each component in austenitic stainless steel.
[0039] S1.2. Vacuum induction smelting: Put polysilico...
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[0073] Table 4. Example 1-3 alloy forging deformation process parameters
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[0075]
[0076] Table 5. Chemical composition (%) of austenitic stainless steel obtained in Examples 1-3
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[0078]
[0079] The austenitic stainless steel of Examples 1-3 was subjected to multiple cold rolling deformation and intermediate annealing treatments, and finally retained 20% of the cold deformation. The room temperature, 450°C and 550°C tensile properties of each example are shown in Table 6. . The austenitic stainless steel components of the three embodiments all have higher strength and good plasticity, and meet the performance requirements of the present invention.
[0080] Table 6. Room temperature and medium temperature tensile properties of the austenitic stainless steel of Examples 1-3
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