Cu-Fe复合材料中铁纤维对其性能的影响

采用液固两相铸造复合工艺制备了铁纤维增强铜基复合材料，研究了深度变形过程中铁组元纤维化对复合材料性能的影响．结果发现，在冷拔过程中，复合材料的强度随着形变量的增加而增大，但只有当中间退火后的形变量高于O．5时，复合材料中铁纤维的强化作用才比较明显，并且形变量越大，强化作用越大．纤维与基体之间是一种弱界面结合，复合材料的断裂韧性能良好．

Effect of iron fiber onthe properties of the Cu-Fe composite

Cu-17? composite was prepared with a new method, in which copper melt was cast into the module containing iron wires in a vacuum furnace. The influence of the fibration of iron during the cold deep drawing on the mechnical properities of the composite was studied. It's shown that the tensile strength of the composit increases during the cold drawing, but the strengthening effect of iron fiber became remarkable only when the true strain of the composite after the last mid-annealing was larger than 0.5. The present result shows also that the composite has a toughness and plasticity good enough for deep drawing. The break analysis indicates that the interface binding between iron fiber and copper matrix is weak.