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Relative effect(s) of texture and grain size on magnetic properties in a low silicon non-grain oriented electrical steel

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Title Relative effect(s) of texture and grain size on magnetic properties in a low silicon non-grain oriented electrical steel
 
Creator PREMKUMAR, R
SAMAJDAR, I
VISWANATHAN, NN
SINGAL, V
SESHADRI, V
 
Subject recrystallization texture
lamination steels
sheets
microstructure
permeability
aluminum
growth
losses
model
electrical steel
texture
magnetic properties
cold rolled non-grain oriented (crno)
grain size
watt loss and permeability
 
Description Hot rolled low Si (silicon) non-grain oriented electrical steel was cold rolled to different reductions. Cold rolled material was subsequently recrystallized, 650degreesC and 2 h, and then temper rolled (to 7% reduction) for the final grain growth annealing and decarburization treatment at 850degreesC for 2-24h. The development of texture, grain size and magnetic properties were characterized at different stages of processing. Effect of texture on magnetic properties (watt loss and permeability) was observed to be best represented by the ratio of volume fractions of (I 1 1) /(0 0 1) fibers, as estimated by convoluting X-ray ODFs (orientation distribution functions) with respective model functions. Such a ratio was termed as generalized texture factor (if) for the non-grain oriented electrical steel. An effort was made to delink effects of grain size and texture, as represented by respective tf, on watt loss and permeability by careful analysis of experimental data. In general, low if and/or high grain size were responsible for low watt loss and high permeability. However, individual effect of grain size or if on magnetic properties was less significant at low tf or large grain size, respectively. An attempt was made to fit regression equations, namely-linear, exponential and power, relating magnetic properties with if and grain size, limiting the fitting parameters to 3. Least standard deviations, between experimental and predicted values, were obtained by power regression equations for both magnetic properties. (C) 2003 .
 
Publisher ELSEVIER SCIENCE BV
 
Date 2011-07-26T14:02:53Z
2011-12-26T12:54:39Z
2011-12-27T05:42:48Z
2011-07-26T14:02:53Z
2011-12-26T12:54:39Z
2011-12-27T05:42:48Z
2003
 
Type Article
 
Identifier JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 264(1), 75-85
0304-8853
http://dx.doi.org/10.1016/S0304-8853(03)00142-2
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6923
http://hdl.handle.net/10054/6923
 
Language en