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Mechanical properties and uniformity of Fe-MgB_2 wires upon various wire drawing steps

机译:不同拉丝步骤下Fe-MgB_2导线的力学性能和均匀性

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Effect of drawing process on the mechanical properties and cross-sectional uniformity of Fe/MgB2mono-filamentary wires were investigated in this study. Successive cold drawing steps were applied with and without intermediate strain relief annealing steps. Micro-hardness measurements of the drawn wires were taken from the polished cross-sections. Tensile tests were performed on the 120 mm long wires samples. Microstructural properties of the sheathing material and that of the superconducting core were studied using SEM. Uniformity of the cross-sectional area in final mono filamentary wires was studied on SEM images of the polished cross-sections. Excessive mechanical deformation of the soft iron sheathing metal via drawing was assessed and discussed.
机译:研究了拉拔工艺对Fe / MgB2单丝的力学性能和截面均匀性的影响。在有和没有中间应变消除退火步骤的情况下,进行连续的冷拔步骤。从抛光的横截面测量拉丝的显微硬度。在120 mm长的线材样品上进行了拉伸试验。使用SEM研究了护套材料和超导芯的微观结构特性。在抛光的横截面的SEM图像上研究了最终单丝线横截面的均匀性。评估并讨论了软铁护套金属通过拉伸产生的过度机械变形。

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