Production of high silicon steel for electrical applications by thermomechanical processing
Production of high silicon steel for electrical applications by thermomechanical processing
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DOI：
10.1016/s0924-0136(03)00247-4
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发表时间：
2003-10
影响因子：
6.3
通讯作者：
T. Yanes;Y. Houbaert;O. Fischer;J. Schneider
中科院分区：
文献类型：
--
作者：
T. Yanes;Y. Houbaert;O. Fischer;J. Schneider
这项工作的目的是研究一种方法，利用热冷加工技术对含硅量高达6.5%的高硅合金进行轧制加工。采用合适的工艺方案，对含硅4.5%和6.3%的合金进行了铸造、热轧和冷轧。热轧后最终厚度为1 mm，冷轧后为0.4 mm。热轧后，在板厚范围内观察到了非均匀的组织：表面有剪切带，中心区有细长的晶粒。再结晶在低温下被强烈抑制，特别是在高硅钢中，可能是由于有序化的原因。由于没有再结晶，冷轧材料的显微组织与热轧组织相似。在900℃退火2小时后，观察到二次再结晶，织构减弱。
The objective of this work is to investigate a method by which high silicon alloys containing up to 6.5% Si can be processed by rolling applying hot–cold working techniques. Alloys with 4.5 and 6.3% Si were cast, hot and cold rolled using an adequate scheme. A final thickness of 1mm after hot rolling and 0.4mm after cold rolling was obtained. After hot rolling a heterogeneous microstructure is observed over the sheet thickness: shear bands in the surface and a central zone with elongated grains. The recrystallisation is strongly retarded at low temperature and specifically in the high Si steel probably because of ordering. The microstructure of the cold rolled material is similar to the hot rolled microstructure, due to the lack of recrystallisation. After annealing for 2h at 900°C secondary recrystallisation is observed and texture is weakened.