Influence of Phosphorous and Boron on the Recrystallization, Grain Growth and Mechanical Properties of 3% Si Steel

Abstract:

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A new approach to obtain high strength of non-oriented electrical steel by addition of phosphorus is proposed. The method includes B-additions which suppress grain boundary P segregation, strengthen the grain boundary cohesion and enhance the P solid solution hardening. Two 3% Si steels, a B-free 0.1%P steel and a 20 ppm B-added 0.1%P steel were analyzed. The microstructures were studied by EBSD. The B-addition resulted in a pronounced rotated cube component, {100}<011>, after a hot-band annealing treatment. A -fiber texture was developed in the B-free steel. The B-addition caused a retardation of the recrystallization, allowing for the growth of grains with a lower stored energy, such as rotated cube oriented grains. The steels were further cold rolled and recrystallization annealed to observe a similar effect after large cold reductions. The present contribution focuses on the potential of this concept to obtain high strength 3% Si steels with low core losses.

Info:

Periodical:

Materials Science Forum (Volumes 654-656)

Main Theme:

Edited by:

Jian-Feng Nie and Allan Morton

Pages:

302-305

DOI:

10.4028/www.scientific.net/MSF.654-656.302

Citation:

S. I. Lee and B. C. De Cooman, "Influence of Phosphorous and Boron on the Recrystallization, Grain Growth and Mechanical Properties of 3% Si Steel", Materials Science Forum, Vols. 654-656, pp. 302-305, 2010

Online since:

June 2010

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$35.00

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