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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 15    No. 3    June 2005

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Strength of deformation-processed Cu-Fe in-situ composites
GE Ji-ping(葛继平), ZHAO Hong(赵 红), YAO Zai-qi(姚再起)

Department of Materials Science and Engineering,  Dalian Jiaotong University, Dalian 116028, China

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(tCu) 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

ISSN 1672-7029
CN 43-1423/U

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