Cu-18vol％Nb微观复合材料的热稳定性研究

Research on the thermal stability of a Cu-18vol.%Nb Microcomposites

摘要:

通过高脉冲磁场的捆扎和拉伸工艺制备了具有高强度和高导电性的Cu-18vol.％Nb微复合材料（873*873*873）。 我们报告了我们对多丝Cu-Nb微复合材料的微观结构，强度和磁性的演变的研究。 结果表明，在高达830℃的温度下退火过程中，Nb的（110）衍射峰的强度变得更尖锐和更高。 观察到铌丝的显着球化和粗化现象。 讨论了微观结构变化对Cu-Nb微复合材料力学性能和磁性能的影响。

Abstract:

The high strength and high conductivity Cu-18vol.%Nb microcomposites (8733filaments) were fabricated by bundling and drawing process (ADB) for high pulsed magnets field. The influence of heat treatment on the microstructure、mechanical properties、 and magnetic properties of Cu-18vol.%Nb microcomposites were systematically investigated. The sample were characterized by XRD、 SEM、 and TEM. Results show that the intensity of <110>Nb texture decreased at first and then increased with the increases of annealing temperature. At the same time, the significant spheroidization and coarsening phenomenon of the Nb filaments were observed. The influence of the microstructural changes on the mechanical properties and the magnetic properties of the Cu-Nb microcomposites are discussed.