Method for refining metal structure in oxide metallurgy by utilizing pulsed magnet field
A technology of pulsed magnetic field and metal structure, which is applied in the field of metal solidification and fine grain, can solve the problems of enhanced grain coarsening and alloy grain size increase, so as to reduce microporosity, expand equiaxed grain proportion, and refine The effect of organizational structure
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[0028] The present invention will be further described below in conjunction with the embodiments, only for the purpose of better understanding the content of the present invention. Therefore, the examples do not limit the protection scope of the present invention.
[0029] In this embodiment, the metal material is 45# steel; the composite alloying elements inducing intragranular ferrite are Ti-O-V-N series alloys. The following are the method steps of using pulsed magnetic field to refine metal structure by oxide metallurgy:
[0030] a. The 45# steel is heated and melted in a resistance furnace, the maximum heating temperature is 1600 °C, the superheat degree is 150 °C, and the temperature is kept for 10 minutes;
[0031]b. Add Ti-O-V-N series alloy to molten 45# molten steel to adjust the chemical composition of 45# molten steel to: C 0.42, Si 0.36, Mn 0.23, S 0.043, P 0.017, Ti 0.013, V 0.09, N 0.014 ;
[0032] c. Apply a pulsed magnetic field with a magnetic induction in...
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