A Multistep Processing of Fe-Si Steel

Electric motors consume about 70% of generated §electricity worldwide. With an increase in power §consumption the improvements in the efficiency of AC §motors will have major energy savings. Higher §efficiency can be achieved in thin sheet of Fe-Si §steel with ~150 microns grain size and a 100 fiber §texture normal to the sheet, which maximizes the §easy magnetization direction in the sheet. The Goss §texture with a single easy magnetization direction §in the Fe-Si sheet has been produced for §transformers for many years by multistage §processing, but the desired texture for motors has §not yet been produced by any multistage processing. §This technological challenge is addressed in the §book through detailed studies of the deformation and §recrystallization processes in continuously cast and §directionally solidified Fe-Si alloys, with columnar §grain structure with the desired fiber texture. A §multistep thermomechanical processing has been §successfully developed for recovery of preferred 100 fiber texture. This book should be useful to §senior students of metallurgy, materials science and §engineering and to researchers in laboratories and §industry. Electric motors consume about 70% of generated §electricity worldwide. With an increase in power §consumption the improvements in the efficiency of AC §motors will have major energy savings. Higher §efficiency can be achieved in thin sheet of Fe-Si §steel with ~150 microns grain size and a 100 fiber §texture normal to the sheet, which maximizes the §easy magnetization direction in the sheet. The Goss §texture with a single easy magnetization direction §in the Fe-Si sheet has been produced for §transformers for many years by multistage §processing, but the desired texture for motors has §not yet been produced by any multistage processing. §This technological challenge is addressed in the §book through detailed studies of the deformation and §recrystallization processes in continuously cast and §directionally solidified Fe-Si alloys, with columnar §grain structure with the desired fiber texture. A §multistep thermomechanical processing has been §successfully developed for recovery of preferred §100 fiber texture. This book should be useful to §senior students of metallurgy, materials science and §engineering and to researchers in laboratories and §industry.