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The Influence of Cr on 50W800 Silicon Steel Hot-Rolled Microstructure

The influence of Cr on the hot-rolled structure, the 50W800 Silicon steel of the sample is mainly the recovery structure of the surface layer and the deformed fiber structure of the center layer, of which 1/3 of the surface layer of the 0CrNb sample has recovered, while the surface layer of the 0.5CrNb sample has only occurred. Slight replies, reply organization is not obvious.

The Si mass fraction of the 50W800 Silicon steel used this time is 3%, and there is no phase transformation during thermal deformation (all in the ferrite region). Generally, only the softening process of dynamic recovery occurs, so the surface layer will recover, while the center layer will occur. It is a fibrous structure with a higher dislocation density. Therefore, it can be seen from the hot-rolled microstructure results that the addition of Cr has an inhibitory effect on the recovery process of hot-rolled silicon steel containing Nb50W800 Silicon steel.

The effect of Cr on the normalized structure of 50W800 Silicon steel, the main purpose of normalizing treatment is to make the structure of 50W800 Silicon steel more uniform, and the recrystallization occurs to increase the recrystallized grains, so as to prevent the shingle defect of 50W800 Silicon steel and improve the 50W800 Silicon steel. At the same time, the grains are coarsened, and the distribution of texture is affected, which in turn affects the magnetic properties of 50W800 Silicon steel.