The authors wish to thank the Servei de Microscòpia of the Universitat Autònoma de Barcelona and Mrs. C. Mickel for their technical support during electron-microscopy characterization. We also acknowledge Dr. W. H. Li and Mr. H. Klauss for their assistance with sample preparation and the compression tests. This work has been partially financed by the 2009-SGR-1292 and MAT2007-61629 research projects. J.F. acknowledges a Ph.D. Fellowship from the Spanish Ministry of Science and Innovation. M.D.B. acknowledges partial financial support from an ICREA-Academia Award.
The Influence of Deformation-Induced Martensitic Transformations on the Mechanical Properties of Nanocomposite Cu-Zr-(Al) Systems†
Article first published online: 16 NOV 2010
Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Advanced Engineering Materials
Volume 13, Issue 1-2, pages 57–63, February, 2011
How to Cite
Fornell, J., Baró, M. D., Suriñach, S., Gebert, A. and Sort, J. (2011), The Influence of Deformation-Induced Martensitic Transformations on the Mechanical Properties of Nanocomposite Cu-Zr-(Al) Systems. Adv. Eng. Mater., 13: 57–63. doi: 10.1002/adem.201000169
- Issue published online: 26 JAN 2011
- Article first published online: 16 NOV 2010
- Manuscript Accepted: 17 SEP 2010
- Manuscript Received: 19 MAY 2010
The microstructure and mechanical properties of Cu46.5Zr48.5Al5 and Cu50Zr50 rods are investigated. Cu50Zr50 is composed of nanostructured martensitic phases, while the Cu46.5Zr48.5Al5 alloy comprises micrometer-sized dendrites (mainly austenitic phase) in an amorphous matrix. Both samples show considerable plasticity under compression and a work-hardening ability. Martensitic phase transformations during deformation play a significant role with regard to the mechanical properties. Nanoindentation tests on the different phases comprising the alloys indicate that the amorphous matrix in Cu46.5Zr48.5Al5 is harder than the crystalline phases and has a less-pronounced indentation-size effect.