Skip navigation
Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/12774
Title: Effect of stacking fault energy on deformation behavior of cryo-rolled copper and copper alloys
Authors: Bahmanpour H.
Kauffmann A.
Khoshkhoo M.S.
Youssef K.M.
Mula, Suhrit
Freudenberger J.
Eckert J.
Scattergood R.O.
Koch C.C.
Published in: Materials Science and Engineering A
Abstract: Pure copper and Cu-12.1at.%Al-4.1at.%Zn alloy were subjected to rolling in liquid nitrogen. TEM studies showed that dynamic recovery during the deformation process was effectively suppressed and hence microstructures with dislocation substructure and deformation twins were formed. Mechanical properties were assessed via microtensile testing that shows improved yield strength, 520±20MPa, and ductility, 22%, in the case of pure copper. Alloying with Al and Zn results in reduction in stacking fault energy (SFE) which can contribute to enhanced strength and good ductility. Physical activation volume obtained via stress relaxation tests is 26b3, and 8b3 for pure copper, and Cu-12.1at.%Al-4.1at.%Zn, respectively. The effect of SFE on work hardening rate of samples is discussed. Although twinning is observed in the alloy, it is concluded that network dislocation strengthening plays the major role in determining the mechanical properties. © 2011 Elsevier B.V.
Citation: Materials Science and Engineering A (2011), 529(1): 230-236
URI: https://doi.org/10.1016/j.msea.2011.09.022
http://repository.iitr.ac.in/handle/123456789/12774
Issue Date: 2011
Keywords: Activation volume
Cu based alloys
Deformation behavior
Stacking fault energy
Transmission electron microscopy
Work hardening rate
ISSN: 9215093
Author Scopus IDs: 36859235600
35242868700
56976243800
6701480145
12783902100
7004706116
55613237718
7006411003
57203364844
Author Affiliations: Bahmanpour, H., Department of Materials Science and Engineering, North Carolina State University, Engineering Building I, 911 Partner's Way, Raleigh, NC 27695-7907, United States
Kauffmann, A., IFW Dresden, Helmholtzstr. 20, D-01069 Dresden, Germany, TU Dresden, Institute of Materials Science, D-01062 Dresden, Germany
Khoshkhoo, M.S., TU Dresden, Institute of Materials Science, D-01062 Dresden, Germany
Youssef, K.M., Department of Materials Science and Engineering, North Carolina State University, Engineering Building I, 911 Partner's Way, Raleigh, NC 27695-7907, United States
Mula, S., Department of Materials Science and Engineering, North Carolina State University, Engineering Building I, 911 Partner's Way, Raleigh, NC 27695-7907, United States
Freudenberger, J., TU Dresden, Institute of Materials Science, D-01062 Dresden, Germany, TU Bergakademie Freiberg, Institute of Materials Science, Gustav-Zeuner-Str., 5 D-09599 Freiberg, Germany
Eckert, J., IFW Dresden, Helmholtzstr. 20, D-01069 Dresden, Germany, TU Dresden, Institute of Materials Science, D-01062 Dresden, Germany
Scattergood, R.O., Department of Materials Science and Engineering, North Carolina State University, Engineering Building I, 911 Partner's Way, Raleigh, NC 27695-7907, United States
Koch, C.C., Department of Materials Science and Engineering, North Carolina State University, Engineering Building I, 911 Partner's Way, Raleigh, NC 27695-7907, United States
Funding Details: This work is part of the Material World Network project between North Carolina State University, USA and Leibniz Institute for Solid State and Materials Research, Germany. Financial support from National Science Foundation under contract DMR-0806323 as well as from the Deutsche Forschungsgemeinschaft under contract FR 1714/5-1 is gratefully acknowledged.
Corresponding Author: Bahmanpour, H.; Department of Materials Science and Engineering, North Carolina State University, Engineering Building I, 911 Partner's Way, Raleigh, NC 27695-7907, United States; email: hbahman@ncsu.edu
Appears in Collections:Journal Publications [MT]

Files in This Item:
There are no files associated with this item.
Show full item record


Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.