When twisted into a cable, reduced, and wrapped, Nb 3 Sn composite superconductors are subject to significant deformation and can sustain damage that will affect their electrophysical properties. This article examines the effect of artificially induced surface damage on the electrophysical characteristics and microstructure of 0.82 and 0.7 mm in diameter Nb 3 Sn superconductors fabricated by the bronze technology and the internal tin source method. It is shown that the critical current of the deformed samples decreases with increasing depth, amount, and extent of the damage. The current-carrying capacity of a superconductor decreases with increasing deformation produced by flattening wire samples to thickness 0.6–0.4 mm.

中文翻译：

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局部损伤对 Nb3Sn 超导体性能影响的研究

Nb 3 Sn 复合超导体在扭成电缆、还原和缠绕时会发生显着变形，并且会受到损坏，从而影响其电物理性能。本文研究了人工诱导表面损伤对采用青铜技术和内部锡源法制造的直径为 0.82 和 0.7 毫米的 Nb 3 Sn 超导体的电物理特性和微观结构的影响。结果表明，变形样品的临界电流随着损伤深度、数量和范围的增加而减小。超导体的载流能力随着将导线样品压平至厚度为 0.6-0.4 毫米而产生的变形增加而降低。