Composite powders made up of 1 vol. %Ag nanowires (NW) dispersed in Cu were prepared and consolidated into cylinders by spark plasma sintering. One cylinder was sintered at only 400 °C resulting in a nanocomposite sample with no dissolution of the Ag NW into the Cu matrix. The second cylinder was sintered at 600 °C and the Ag NW are dissolved forming Ag/Cu alloy NW. The cylinders served as starting materials for room temperature wire-drawing, enabling the preparation of wires of decreasing diameters. The microstructure of the cylinders and the wires was investigated by electron microscopy and associated techniques. The tensile strength and electrical resistivity were measured at 293 K and 77 K. The nanocomposite and alloy wires show similar UTS values (1100 MPa at 77 K), but alloying, although spatially limited, provoked a significant increase in electrical resistivity (0.56 µΩ cm at 77 K) compared to the nanocomposite wires (0.49 µΩ cm at 77 K).

中文翻译：

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合金化对银纳米线抗拉强度和电阻率的影响：铜复合宏观线

复合粉末由 1 卷组成。制备分散在 Cu 中的 %Ag 纳米线 (NW) 并通过放电等离子烧结将其固结成圆柱体。一个圆柱体仅在 400 °C 下烧结，从而得到纳米复合材料样品，其中 Ag NW 没有溶解到 Cu 基质中。第二个圆柱体在 600 °C 下烧结，Ag NW 溶解形成 Ag/Cu 合金 NW。圆柱体用作室温拉丝的起始材料，能够制备直径减小的线材。通过电子显微镜和相关技术研究圆柱体和线的微观结构。在 293 K 和 77 K 下测量拉伸强度和电阻率。 纳米复合材料和合金线显示出相似的 UTS 值（77 K 时为 1100 MPa），但合金化，尽管空间有限，