论文标题
在散装金属眼镜的剪切带的剪切影响区域上
On the shear-affected zone of shear bands in bulk metallic glasses
论文作者
论文摘要
散装金属眼镜的切口栏，pd $ _ {40} $ ni $ _ {40} $ p $ _ {20} $和zr $ _ {52.5} $ _ {52.5} $ cu $ _ {17.9.9}条件，导致失败前形成剪切带。使用波动电子显微镜详细研究了剪切带的直接环境，以提取有关应变诱导的中距离阶（MRO）及其侧向延伸的信息。对于样品的拉伸和压缩侧观察到了特征性材料无关的梯度，这表明局部应力状态对MRO的影响。我们的结果揭示了几微米的上限，用于剪切带的剪切影响环境的横向延伸。
Notched bars of bulk metallic glasses, Pd$_{40}$Ni$_{40}$P$_{20}$ and Zr$_{52.5}$Cu$_{17.9}$Ni$_{14.6}$Al$_{10}$Ti$_{5}$, were deformed under 3-point bending conditions, resulting in the formation of shear bands before failure. The immediate environment of shear bands was investigated in detail using fluctuation electron microscopy to extract information on the strain-induced modifications of the medium-range order (MRO) and its lateral extension. Characteristic material-independent gradients were observed for the tensile and compressive sides of the samples indicating the impact of the local stress state on the MRO. Our results reveal an upper limit of a few microns for the lateral extension of the shear-affected environments of shear bands.
