Abstract

The effects of rolling with different reductions at room temperature, a temperature of 300°C, and the temperature of boiling of liquid nitrogen on the surface structure of the Zr_62.5Cu_22.5Fe₅Al₁₀ alloy on the evolution of shear bands and microhardness of this alloy have been investigated. Scanning electron microscopy, transmission electron microscopy, and X-ray structural analysis methods were used to study the changes in the structure after mechanical processing. To study the effect of rolling on the mechanical properties of ribbons, the Vickers microhardness is measured. Based on the results, conclusions on the hardness changes depending on the mode of rolling of the Zr_62.5Cu_22.5Fe₅Al₁₀ alloy ribbons are drawn. It is found that after rolling, the microhardness of the ribbons decreases with an increase in the degree of deformation at both room temperature and elevated and lowered temperatures, which is associated with the formation of shear bands in the structure and an increase in the amount of free volume (the greater the volume, the greater the degree of deformation). The microhardness of the alloy decreases to the greatest extent upon rolling at the temperature of liquid nitrogen.

中文翻译：

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锆基非晶合金在不同温度下轧制过程中剪切带的演变

摘要

Zr _62.5 Cu _22.5 Fe ₅ Al ₁₀合金在室温，300℃和液氮沸腾温度下不同压下量的轧制对剪切带演变和显微硬度的影响已经对该合金进行了研究。扫描电子显微镜，透射电子显微镜和X射线结构分析方法用于研究机械加工后结构的变化。为了研究轧制对带材机械性能的影响，测量了维氏显微硬度。根据结果​​，硬度的结论取决于Zr _62.5 Cu _22.5的轧制方式拉伸Fe ₅ Al ₁₀合金带。发现在轧制后，带材的显微硬度在室温下以及在升高的和降低的温度下都随着变形程度的增加而降低，这与结构中剪切带的形成以及碳纤维数量的增加有关。自由体积（体积越大，变形程度越大）。在液氮温度下轧制后，合金的显微硬度最大程度地降低。