Coordinated deformation behavior of Cu-10wt.% FeC alloys through controlling structure, morphology and distribution of Fe-C phases

The phase transformation and coordinated deformation behaviors of Cu-10wt.%FeC alloys in the different thermo-mechanical treatment conditions were systematically studied. The results reveal that the g-Fe (FCC FeC-rich phase), and a-Fe (BCC FeC-rich phase) are simultaneously formed in the rapidly solidified alloy. Although the martensite transformation can be further induced in the alloy by a solution and quenching treatment, the strength and elongation are all reduced compared with the rapidly solidified alloy. Additionally, the martensite transformation of g-Fe (FCC) /a-Fe (BCC) can be induced in the two alloys during the 80% cold rolling, and resulting in the significantly increased strength. But the alloy without a solution and quenching treatment possesses the higher strength. Particularly, under the same strength conditions, the alloys in the final cold rolling state can still have a higher elongation than those of traditional Cu-based composites strengthened by ceramic particles (no phase transformation). The mechanisms of phase transformation and coordinated deformation of alloys were also deeply discussed in the paper.(c) 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CCBY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).