A Strengthening Model of Cu-Cr In Situ Fibrous Composites Produced by Equal Channel Angular Pressing

Abstract:

The composite filament structure was produced in the Cu-5.7%Cr and Cu-12.4%Cr as-cast alloy ingots by using equal channel angular pressing (ECAP) at room temperature. Optical and TEM microstructure, micro-hardness, tensile strength and electrical conductivity of ECAPed samples were investigated. The rotation and spreading of Cr particles took place during ECAP, and resulted in long thin in-situ filaments. The tensile strength increased with the number of the ECAP passes. A strengthening model was recommended to predict the enhancement of the tensile strength in Cu-Cr in situ fibrous composites.

• Periodical: Materials Science Forum (Volumes 745-746)
• Pages: 321-326
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.745-746.321
• Online since: February 2013
• Authors: Wei Wei, Kun Xia Wei, Igor V. Alexandrov, Fei Wang, Jing Hu
• Keywords: Cu-Cr Alloys, Equal-Channel Angular Pressing (ECAP), In Situ Composite, Strengthening

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