Abstract
The present work represents the first localized nanomechanical analysis of the single phases present in an alloy, providing a better understanding of the macroscopic behaviour of the material. The Ti60Cu14Ni12Sn4Nb10 and Ti60Cu14 Ni12Sn4Ta10 alloys under investigation show a very similar elastic response of the nanostructured matrix in spite of a slightly higher hardness in the latter. Nevertheless, the dendritic phase exhibits substantially higher values of hardness for both alloys, with an increase of about 32% in both cases. The elastic modulus increases by up to 36% in the Ta-containing alloy and by up to 23% in the Nb-containing alloy, compared to the matrix. The different nanomechanical response explains, together with the effect of the dendrites restricting crack propagation, the increased ductility of the Nb-containing alloy compared with the Ta-containing alloy.
Originalsprache | Englisch |
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Seiten (von - bis) | 317-319 |
Seitenumfang | 3 |
Fachzeitschrift | International Journal of Materials Research |
Jahrgang | 95.2004 |
Ausgabenummer | 5 |
DOIs | |
Publikationsstatus | Veröffentlicht - 1 Mai 2004 |
Bibliographische Notiz
Funding Information:The authors want to acknowledge the SURFACE company and in particular W. Stein and M. Knieps for their assistance in the nanome-chanical test. This project is funded by the European Commission under the Fifth Framework Programme, Marie Curie contract number HPMD-CT-2001-00094.
Publisher Copyright:
© 2004 Carl Hanser Verlag, München.