The influence of γ-fibre texture on the grain boundary character distribution of an IF-steel
The influence of γ-fibre texture on the grain boundary character distribution of an IF-steel
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γ纤维织构对IF钢晶界特征分布的影响
DOI：
10.1016/j.scriptamat.2022.115042
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发表时间：
2023
影响因子：
6
通讯作者：
G. Rohrer
中科院分区：
文献类型：
--
作者：
H. Beladi;V. Tari;A. Rollett;G. Rohrer
目前的研究表明，IF钢通过静态再结晶形成的γ纤维织构改变了晶界取向和平面取向的分布。在初始相变条件下，晶界面沿(110)晶面分布最大。然而，随着γ纤维织构强度的增加，最大值向(111)方向移动并增强。此外，γ-Fibre织构的存在以牺牲高角度边界为代价，逐渐增加了低角度边界布居，导致了近乎均匀的偏向角分布。对沿γ纤维随机取向的取向分布的计算表明，在0-60°的区域内呈平坦分布，这与观测结果一致。γ纤维织构的存在改变了∑晶界分布的强度，但没有改变晶界分布的形状，在低能对称倾斜晶界出现极大值。
The current study revealed that the development of γ-fibre texture in IF-steel through static recrystallisation alters the distribution of grain boundary misorientations and plane orientations. In the initial transformed condition, the grain boundary plane distribution has a maximum at the (110) orientation. However, as the intensity of the γ-fibre texture increased, the maximum shifted to (111) and intensified. Furthermore, the presence of γ-fibre texture gradually increased the low angle boundary population at the expense of high angle boundaries, leading to a nearly uniform misorientation angle distribution. A calculation of the disorientation distribution assuming random orientations along the γ-fibre showed a flat distribution in the domain from 0 to 60°, consistent with the observations. The presence of γ-fibre texture changed the intensity, but not the shape of the grain boundary distribution at ∑3 = 60°/[111], which displayed maxima at low energy {112} symmetric tilt boundaries.