Abstract
Orientation rotation at grain boundary regions associated with neighboring orientations in Fe-3.0 wt.% Si non-oriented silicon steel has been investigated by crystal plastic simulation. Rotation tendency relative to a certain target orientation is evaluated by deviation angle variation. Taking ideal λ (<001>//ND, normal direction) as the target orientation, the deviation angle of scattered {001} <uv0> orientations at grain boundary regions affected by neighboring orientations during rolling is calculated and verified by experimental measurements. The rotation tendency and rotation velocity field at grain boundary regions are significantly changed by neighboring orientations. According to the neighbor affected orientation rotation, the initial texture can be precisely designed to control the deformation texture at grain boundary regions.
Highlights
Orientation rotation of grains during plastic deformation entails crystallographic texture development in polycrystals
Since grain boundary regions usually act as preferred recrystallization nucleation sites due to their advantages of stored energy and orientation gradient [4,5,6], the orientation rotation adjacent to grain boundary regions is crucial for texture control
From the view of texture control, deformation orientations at grain boundary regions are especially expected to converge to a preferred target orientation for better physical or mechanical properties [23]
Summary
Orientation rotation of grains during plastic deformation entails crystallographic texture development in polycrystals. Controlling the rotation of scattered λ orientations at grain boundary regions is always a challenge to optimize λ texture for non-oriented silicon steel. The previous studies focused on describing the magnitude of orientation gradient and subdivision at a grain boundary region. The detailed rotation direction at a grain boundary region affected by neighboring orientation is usually neglected. From the view of texture control, deformation orientations at grain boundary regions are especially expected to converge to a preferred target orientation for better physical or mechanical properties [23]. Orientation rotation at grain boundary regions associated with neighboring orientations during rolling is investigated in the present study. The present study aims to explore a method to optimize deformation texture at grain boundary regions
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