The influence of the cool rolling on the structure and texture of the electrotechnical silicon steel, hardened from the liquid state (English)

In: Metallurgy and Magnetism, 2004   ;  4-9  ;  2004

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In this investigation we produced in-plane cubic texture (100) [OVW] by primary and collecting recrystallization in the electro-technical steel hardened from the liquid state (HLS) Electro-technical steel with the silicon abundance of 3.9 and 4.66 mass % is plastic after HLS and may be easily rolled with the squeezing 70-80% down to the 0.5 mm thickness. The cold rolling of the investigated steels with the squeezing 7% after HLS reduced the strip poly-thickness down to +- 2 micron. There was selected the optimal regime of annealing with 800 deg C, 7 h in vacuum after cold rolling with Epsilon=7% after HLS, this regime leads to the formation of the pronounced (100) [OVW] texture component up to 65%. Steel with the 4.66 % of silicon after such a processing has a high induction B (Ind 2500)=1.7 T, P1/400=8.7 W/kg and may be used as a core of high frequency devices. The cold rolling with the squeezing 30-80% of the steel with initial texture (100) [OVW] about 65% leads to the formation the same texture in the squeezing texture. The fraction of this component increases with the increase of squeezing during the rolling. The fraction of the cubic (100) [001] component of the texture increases with the increase of squeezing as well. The maximum quantity of this component is observed after the cold rolling with the 70% squeezing.

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