No abstract

No abstract

No abstract

The influence of crystal orientation on the magnetic properties of 3% Si-Fe single crystals was investigated by measuring iron losses and observing magnetic domain patterns in TiN-coated and chemically polished specimens. The iron loss was reduced in a TiN-coated sample whose β angle was less than 4 degrees and increased in a sample whose β angle was larger than 4 degrees. The improvement in the iron loss was due to a decrease in eddy current loss that corresponded to a decrease in the magnetic domain width caused by the tensile stress effect of the TiN coating. In the sample whose β angle was larger than 4 degrees, the eddy current loss did not change due to the TiN coating because the magnetic domain width was almost the same under alternate magnetization. Additionally, hysteresis loss increased because of increase magnetic coercive force.

The phenomenon of secondary recrystallization in 3%Si-Fe under relatively high cold rolling reduction rate condition has been investigated. The texture of the secondary recrystallized sample under 97.2% cold rolling reduction rate condition consists of {110} orientation, which is quite different from Goss ({110}) orientation obtained under lower cold rolling reduction rate conditions. As a result of Grain Boundary Character Distribution (GBCD) analysis on primary recrystallized texture, {110} orientation has the highest frequency of High Energy (HE) boundary with misorientation angle between 20° and 45°. This result demonstrates that the orientation, which has the highest frequency of HE boundary in primary recrystallized texture, is selected during secondary recrystallization. However, as a result of GBCD analysis based on Coincidence Site Lattice (CSL) boundary, Goss orientation has the highest frequency of S9 (CSL) boundary in the primary recrystallized texture throughout all cold rolling conditions.