발간논문

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Vol.39, No.4, 394 ~ 399, 2001
Title
Study of Condition of Disappearance of Ordered Phase in High Silicon Steels
유지형J . H . Yu,신제식J . S . Shin,배준수J . S . Bae,이진형Z . H . Lee,이택동T . D . Lee,이혁모H . M . Lee
Abstract
The ordered phase was tried to disappear in 6.5% Si steel to reduce the power loss and enhance the economic interests. They were prepared by the conventional casting or spray forming method, and they were investigated using the transmission electron microscopy(TEM). The variation in the methods of preparing the specimen did not result in any difference in suppressing the ordered B2 phase in the Fe-Si binary system. It was almost impossible to suppress this ordered phase keeping the silicon level as high as 6.5% even after the heat treatment at 1000℃ for 24 hr or after hot rolling. It was necessary to change the silicon level and control the cooling rate to prevent the ordering reaction, especially, in cooling after heat treatments. The silicon level of 5.8% was obtained as a maximum desirable value.
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