CAJ | 학술논문

采用熔铸-中间热处理-形变工艺制备形变Cu-15Cr及Cu-15Cr-0.05Ce原位复合材料。利用光学显微镜、扫描电镜、液晶电子拉力试验机以及往复摩擦磨损试验机研究Cu-15Cr及Cu-15Cr-0.05Ce合金的微观组织、力学性能、导电性能和摩擦磨损性能。结果表明：微量Ce的加入使Cu-15Cr合金铸态组织枝晶臂直径减小，在相同应变量下形成的纤维更加细小均匀，材料的强度显著提高，导电率略有上升，摩擦磨损性能大幅提高。
채용용주-중간열처리-형변공예제비형변Cu-15Cr급Cu-15Cr-0.05Ce원위복합재료。이용광학현미경、소묘전경、액정전자랍력시험궤이급왕복마찰마손시험궤연구Cu-15Cr급Cu-15Cr-0.05Ce합금적미관조직、역학성능、도전성능화마찰마손성능。결과표명：미량Ce적가입사Cu-15Cr합금주태조직지정비직경감소，재상동응변량하형성적섬유경가세소균균，재료적강도현저제고，도전솔략유상승，마찰마손성능대폭제고。
Cu-15Cr and Cu-15Cr-0.05Ce in-situ composites were prepared by the cast, thermo-mechanical treatment process. The microstructure, mechanical properties, conductivity and friction and wear performance of the in-situ composites were investigated by optical microscope, scanning electronic microscope, tensile-testing machine and pin-on-bar reciprocating device. The results indicate that the trace addition of Ce can refine the primary dendrites of Cu-15Cr alloy and deformed Cr fiber, which leads to a significant increase in strength and slight improvement in conductivity. At the same time, the Cu-15Cr-0.05Ce in-situ composite shows better friction and wear performance.