Stress relief by annealing under external stress in Fe-based metallic glasses
Stress relief by annealing under external stress in Fe-based metallic glasses
复制标题
铁基金属玻璃在外应力下退火消除应力
DOI：
10.1063/1.5052708
复制
发表时间：
2018-10-28
影响因子：
3.2
通讯作者：
Wang, W. H.
中科院分区：
文献类型：
--
作者：
Ri, M. C.;Ding, D. W.;Wang, W. H.
研究了在外加应力作用下，不同退火处理对铁基金属玻璃（MG）薄带磁特性的影响。我们发现，长时间的退火处理有利于使更软的磁性MG下施加弯曲应力。结果表明，M-H曲线中的不可逆畴壁运动区和不可逆畴壁旋转区代表应力释放，而磁各向异性的减小可以很好地反映应力释放的程度。在较低频率范围内的磁导率和有效磁导率的变化也代表了应力释放状态。这些观察结果对于理解磁性MG中应力消除、微结构变化和磁性软度之间的关系具有重要意义，可能有助于铁磁玻璃材料性能的改善。通过不同的退火处理，研究了应力消除对Fe基金属玻璃（MG）薄带在外加应力作用下磁性的影响。我们发现，长时间的退火处理有利于使更软的磁性MG下施加弯曲应力。结果表明，M-H曲线中的不可逆畴壁运动区和不可逆畴壁旋转区代表应力释放，而磁各向异性的减小可以很好地反映应力释放的程度。在较低频率范围内的磁导率和有效磁导率的变化也代表了应力释放状态。这些观察结果对于理解磁性MG中应力释放、微结构变化和磁性软度之间的关系具有意义，并且可能有助于铁磁玻璃材料的性能改进。
The effects of stress relief on the magnetic characteristics of Fe-based metallic glass (MG) ribbons are investigated under external stress through various annealing treatments. We found that long-time annealing treatments benefit for making softer magnetic MGs under applied bending stress. We show that the irreversible domain wall movement region and the irreversible domain wall rotation region in the M-H curve represent the stress relief, which can be well reflected by the demagnified magnetic anisotropy. The magnetic coercivity and effective permeability variations in the lower frequency regime also represent the stress relief state. These observations have implications for understanding the relationship between the stress relief, microstructure change, and magnetic softness in magnetic MGs and might be helpful for the performance improvement of the ferromagnetic glassy materials.The effects of stress relief on the magnetic characteristics of Fe-based metallic glass (MG) ribbons are investigated under external stress through various annealing treatments. We found that long-time annealing treatments benefit for making softer magnetic MGs under applied bending stress. We show that the irreversible domain wall movement region and the irreversible domain wall rotation region in the M-H curve represent the stress relief, which can be well reflected by the demagnified magnetic anisotropy. The magnetic coercivity and effective permeability variations in the lower frequency regime also represent the stress relief state. These observations have implications for understanding the relationship between the stress relief, microstructure change, and magnetic softness in magnetic MGs and might be helpful for the performance improvement of the ferromagnetic glassy materials.