Stress annealing (SA) induced magnetic anisotropy is known in iron, nickel and cobaltbased ferromagnetic metallic glass ribbons and it has already been used in commercial processes. Uniaxial elastic strain is introduced by SA and is quenched into the ribbons even after cooling and removing the external stress. The release of the uniaxial quenched strains is clearly observed as an anomaly in the linear thermal expansion coefficient, LTEC, when the ribbon is re-heated without stress The rate of strain release corresponding to the LTEC anomaly, reaches a maximum at the temperature at which the original SA was performed. We have observed this temperature memory effect for the first time over the whole temperature range from 280 to 400C which is below the crystallization temperature, T${}_x$ The observed results are explained well by the existence of a localized "flow unit’’ embedded in an elastic matrix which is accepted as the origin of the shear band formation and rejuvenation of metallic glasses with T${}_g$(glass transition temperature) T${}_x)$, the results here indicate that the same important structural feature is common to metallic glasses with both T${}_g$ T${}_x$. Because magnetization behavior is very sensitive to the existence of residual elastic strain which is difficult to evaluate in most of the metallic glasses, detailed studies and a revival of interest in ferromagnetic ribbons will help us to understand more about the nature of the localized flow unit as well as non-affine deformations.

中文翻译：

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金属玻璃中应力退火引起的各向异性的温度记忆效应

应力退火（SA）引起的磁各向异性在铁，镍和钴基铁磁金属玻璃带中是已知的，并且已经在商业过程中使用。SA引入单轴弹性应变，甚至在冷却并消除了外部应力后，也将其淬火到带中。当带材在没有应力的情况下重新加热时，可以清楚地观察到单轴淬火应变的释放是线性热膨胀系数LTEC的异常。对应于LTEC异常的应变释放速率在该温度下达到最大值。执行原始的SA。我们首次在低于结晶温度T的280至400℃的整个温度范围内观察到这种温度记忆效应${}_X$ 观察结果可以很好地解释，因为存在嵌入弹性矩阵中的局部“流动单元”，该流动矩阵被认为是剪切带形成和T形金属玻璃恢复活力的起源。${}_G$（玻璃化转变温度）T${}_X）$，这里的结果表明，相同的重要结构特征对于具有两种T${}_G$ Ť${}_X$。由于磁化行为对残留弹性应变的存在非常敏感，而残留弹性应变在大多数金属玻璃中很难评估，因此对铁磁带的详细研究和兴趣的复兴将有助于我们进一步了解局部流动单元的性质，因为以及非仿射变形。