ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Transformations and Microstructures
Role of Inclusion, Microstructure and Texture Evolution in Soft Magnetic Properties of Fe–6.9 wt%Si Alloy with Yttrium Doping
Guojun CaiYing LiYanru Huang Raja Devesh Kumar Misra
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2020 Volume 60 Issue 11 Pages 2541-2548

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Abstract

The role of inclusion, microstructure and texture evolution in soft magnetic properties of Fe–6.9 wt%Si alloy with yttrium doping was studied. The results demonstrated that rare earth Y played a crucial role in the soft magnetic properties of Fe–6.9 wt%Si alloy. Adding Y suppressed the nucleation of {110} orientation grains at {111} in-grain shear bands during warm rolling, and refined the grain size after annealing. Meanwhile, the average size and number of inclusions showed a similarly decreasing trend because of Y doping, and the maximum interface energy between fine Y-inclusions and {100} grains possibly induced the grain growth of {100} grains. In the measurement of magnetic properties, B8 value increased from 1.295 T to 1.493 T, and P10/1000 value was reduced from 19.165 W/kg to 17.328 W/kg due to Y doping.

Orientation images of warm-rolled sheets: (a) sample A1 and (b) sample A2. (Online version in color.) Fullsize Image
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© 2020 The Iron and Steel Institute of Japan.

This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs license.
https://creativecommons.org/licenses/by-nc-nd/4.0/
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