Paper Title:
Processing of Ultrafine-Grained Cu-Fe-Cr Composite by Equal Channel Angular Pressing
  Abstract

In this study, equal channel angular pressing was carried out on Cu-Fe-Cr composites at room temperature. The microstructure and hardness of Cu-Fe-Cr pressed using different ECAP routes were investigated. All Cu-Fe-Cr specimens showed ultrafine-grained microstructures with the shape and distribution of Fe-Cr phase dependent on the processing routes. As the number of pressing increased by route A, the initial denfrite of Fe-Cr phase were elongated along the shear direction and developed into filaments. On the other hand, as the number of pressing increased by route Bc, the initial dendrite became finer by fragmentation with no pronounced change of the shape. In route C, the shearing of the second phase in the first pass can be reversed by the shearing in the reverse direction in the second pass and the morphological change of Fe-cr particles is minimal. The hardness increased more rapidly in route Bc and route C than in route A. In ECAPed Cu-Fe-Cr, the spacing between Fe-Cr filaments did not decrease appreciably with strain unlike the cold-drawn Cu-Fe-Cr in which the spacing between Fe-Cr filaments decreases rapidly with strain. The higher strength in route C can be associated with the sub-divided microstructure resulting from the activation of various slip systems enhanced by the presence of larger strong particles. This result suggests that the microstructural development in Cu matrix is more important in strengthening than the morphological development of Fe-Cr phase in ECAPed Cu-Fe-Cr.

  Info
Periodical
Materials Science Forum (Volumes 503-504)
Edited by
Zenji Horita
Pages
71-76
DOI
10.4028/www.scientific.net/MSF.503-504.71
Citation
K.H. Joo, K.I. Chang, H. S. Kim, S. I. Hong, "Processing of Ultrafine-Grained Cu-Fe-Cr Composite by Equal Channel Angular Pressing", Materials Science Forum, Vols. 503-504, pp. 71-76, 2006
Online since
January 2006
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Hyung Ha Jin, Chan Sun Shin, Wheung Whoe Kim
Abstract:A change of the mechanical property and microstructure of an Fe ion irradiated polycrystalline Fe-9wt%Cr model alloy to 1 dpa was examined...
119
Authors: Orlando Soriano Vargas, Erika O. Avila Davila, Victor M. Lopez-Hirata, Maribel L. Saucedo-Muñoz
Abstract:The hardening behavior of precipitation was studied during aging of Fe-Cr alloys. This mechanical behavior is associated with the nanometric...
443
Authors: Xin Ming Cao, Wei Wei Guo, Xiao Wu Li
Abstract:The plastic deformation behavior of the and [014] Fe-35wt.%Cr alloy single crystals containing fine Cr-rich precipitates were investigated...
1960
Authors: Li Yan Zou, Zhi Ping Sun, Guo Jun Zhang
Chapter 1: Advanced Materials Science
Abstract:In order to find a way which is low cost in preparation of Ti (C,N)/Fe composites. Ti (C,N)/Fe composites were prepared from TiFe (w...
556
Authors: M. Marina, M.Z.M. Zamzuri, M.N. Derman, M.A. Selamat, W. Rahman, Z. Nooraizedfiza
Abstract:This research is focused on assessing the feasibility of the new and innovative microwave sintering technology for fabricating iron-chromium...
43