Effect of In on Fe phase morphology and properties of Cu-Fe alloy

ABSTRACT

In this paper, Cu-6.2Fe-xIn (x = 0, 0.2, 0.4) alloy was prepared by melting casting and mechanical heat treatment. The Fe phase morphology of Cu-6.2Fe-xIn alloy was observed by SEM, EBSD and TEM. The results show that the addition of In element refines the primary Fe phase and optimises its distribution. After large plastic deformation, the Fe phase was fibrillated and the addition of In refines the Fe fibre and increases its density. The strength of Cu-6.2Fe-0.4In alloy with strain of 7 were 901 MPa, which was 201 MPa higher than that of Cu-6.2Fe alloy. The refining effect of In on the primary Fe phase was the main reason for the significant improvement of the strength of Cu-Fe-In alloy.

KEYWORDS:

• Cu-Fe-In alloy
• solidification behaviour
• tensile strength
• conductivity

Acknowledgements

This work was supported by the Science and Technology Research Project of Jiangxi Provincial Department of Education (No. 204201400853), and the Scientific Research Starting Foundation for Advanced Talents of Jiangxi University of Science and Technology (No. 205200100570) and Project of research and development of copper smelting and process in new technique, new process and new equipment supported by National Center for Copper Smelting and Process Engineering Technology Research (No. 20231ZDD0205), and the Science and Technology Major Special Project of Jiangxi Province (No. 20213AAE01007).

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by Science and Technology Research Project of Jiangxi Provincial Department of Education [grant number 204201400853]; the Science and Technology Major Special Project of Jiangxi Province [grant number 20213AAE01007]; Project of research and development of copper smelting and process in new technique, new process and new equipment supported by National Center for Copper Smelting and Process Engineering Technology Research [grant number 20231ZDD0205]; Scientific Research Starting Foundation for Advanced Talents of Jiangxi University of Science and Technology [grant number 205200100570].