中文摘要：

研究了单辊旋铸CuCr25合金的显微组织和性能。结果表明，单辊旋铸CuCr25舍金的显微组织呈现出球状富Cr相与枝晶状富Cr并存于Cu基体中的形貌，且富Cr相的大小随务带厚度的变化而变化，分析表明，单辊旋铸合金的快速凝固过程中发生了亚稳态的液相分离。与真空感应熔炼CuCr25舍金的显微硬度相比，单辊旋铸CuCr25合金的显微硬度增大了57％，这主要是由于固溶度增加和晶粒细化的缘故。

英文摘要：

The microstructure and properties of melt spun CuCr25 alloys are investigated. The results show that the microstructure of melt-spun CuCr25 alloys appears both Cr-rich spheroids and Cr-rieh dendrites in the Cu-rich matrix. The morphology and size of the Cvrich phase vary with the thickness. The results have been attributed to the metastable liquid phase separation during rapid solidification. Due to the grain refinement and solid solution increasing, the microhardness of melt-spun CuCr25 ribbons is increased by 57% compared with the inducing melted CuCr25 alloys.