Severe plastic deformation method for grain refinement
A technology for large plastic deformation and grain refinement, which is applied in the field of large plastic deformation processing for the preparation of ultra-fine grained materials, can solve the problems of reducing large plastic deformation, limited material size, and low life, and achieves uniform grain refinement, Ease of industrial application, the effect of expanding the range of materials
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[0032] The following preparation of ultra-fine grained IF steel sheet is taken as an example to further illustrate the present invention.
[0033] See Figure 1 ~ Figure 4 , The large plastic deformation extrusion channel used in the present invention adopts three modules 1, 2, 3, where the first module 1 is located below, the working surface 101 is flat, and the second module 2 is located on the working surface of the first module 1. Above 101, a gap is maintained with the working surface 101 of the first module 1 to form the first channel 4; the front end surface 201 of the second module 2 is an inclined surface; the third module 3 is arranged on the working surface of the first module 1 101, located on the side of the inclined plane 201 of the second module 2, the opposite side 301 of the third module 3 and the inclined plane 201 of the second module 2 is also an inclined plane, and a gap is maintained between the inclined plane 201 of the second module 2 to form The second ch...
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