Abstract:The strength of the deformation-processed Cu-Fe in-situ composite was conducted by material test system(MTS). The results show that the strength increases with the increasing deformation strain and iron content, which is greater than that of the calculated value based on the rule of mixture. The mechanism of strengthening was analysed and evidenced by interface barrier. The correlation between the strength and the thickness of copper phase(t_Cu) obeys Hall-Petch relationship and can be described well by geometrical necessary dislocation model and interface as dislocation source model.

Key words: deformation-processed; Cu-Fe in-situ composite; strength