形变Cu-13．2vol．％Fe原位复合材料导线研究

研究了采用感应加热熔炼和室温变形制备Cu-13．2vol．％Fe原位复合材料导线的工艺过程，并探讨了降低电阻率的中间热处理作用，用光学显微镜、SEM和TEM观察分析了变形过程中组织结构的变化，结果指出，Fe树枝晶的变形是不均匀的，中间热处理有利于均匀变形，在较大变形量下，Fe树枝晶形成纤维，空间形态为薄片状，相结构为α-Fe，测定了力学性能和电阻率，结果是变形量越大，强度越高，电阻率越大。经中间热处理，可在不降低强度的同时，大大降低电阻率，几个较好的电导率／极限拉伸强度组合为：70．6％IACS/659MPa、64．6％/752MPa和51.9％IACS/880MPa。

Study of A Deformation Processed Cu-13.2 vol.% Fe in Situ Composites

Cu-13.2vol. % Fe in situ composites are prepared from as-cast alloys. The alloys are subsequently room-temperature drawn to various strains when Fe dendrites are drawn into fine ribbons. The Fe ribbon is curl and fold in cross-section. The tensile strength and electrical resistivity increase with the increase in wiredrawn content. A series of heat treatments arelondacted at various stages of wire-drawn to promote precipitation of iron from copper, and the good combination of tensile strength and electrical conductivity are achieved.