The authors grateful to M. Frey, H. Grahl, R. Günther, H. Kempe, U. Kunz, H. Lehmann, H. G. Lindenkreuz, H. J. Klauß, C. Mickel and C. Wasmund for technical assistance and to F. Baier, M. Calin, A. Güth, G. He, M. Heilmaier, A. Inoue, W. L. Johnson, K. B. Kim, A. Leonhard, W. Löser, N. Mattern, C. Müller, S. K. Roy, D. J. Sordelet, L. Schultz, M. Stoica, S. Venkataraman, T. G. Woodcock, L. Q. Xing and Z. F. Zhang for stimulating discussions. Financial support provided by EU within the framework of the research and training networks on Bulk Metallic Glasses (HPRN-CT-2000-00033) and Ductile BMG Composites (MRTN-CT-2003-504692), as well as by the Deutscher Akademischer Austauschdienst (DAAD), and the Deutsche Forschungsgemeinschaft (DFG) (Grants No. Ec 111/10-12 and EC 111/12-1) are gratefully acknowledged.
Nanostructured Composite Materials with Improved Deformation Behavior†
Version of Record online: 29 JUL 2005
Copyright © 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Advanced Engineering Materials
Volume 7, Issue 7, pages 587–596, July, 2005
How to Cite
Eckert, J., Kühn, U., Das, J., Scudino, S. and Radtke, N. (2005), Nanostructured Composite Materials with Improved Deformation Behavior. Adv. Eng. Mater., 7: 587–596. doi: 10.1002/adem.200400225
- Issue online: 29 JUL 2005
- Version of Record online: 29 JUL 2005
- Manuscript Accepted: 17 JAN 2005
- Manuscript Received: 29 DEC 2004
- Metallic glasses;
- Nanocrystalline materials
The recent progress in the development of nanostructured composites is described for Zr-base multicomponent alloys as a typical example for such materials. These advanced composite materials are attractive candidates for structural as well as functional applications. The combination of high strength with high elastic strain of fully nanocrystalline and glassy alloys renders them quite unique in comparison to conventional (micro-)crystalline materials. However, one major drawback for their use in engineering applications is the often limited macroscopic plastic deformability, despite the fact that some of these alloys show perfectly elastic-plastic deformation behavior. To improve the room temperature ductility of either fully nanocrystalline or amorphous alloys, the concept of developing a heterogeneous microstructure combining a glassy or nanostructured matrix with second-phase particles with a different length-scale, has recently been employed. This review describes the composition dependent metastable phase formation in the Zr-(Ti/Nb)-Cu-Ni-Al alloy system, which in turn alters the mechanical properties of the alloys. We emphasize the possibilities to manipulate such composite microstructures in favor of either strength or ductility, or a combination of both, and also discuss the acquired ability to synthesize such in-situ high-strength composite microstructures in bulk form through inexpensive processing routes.