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| dc.contributor | Universitat de Barcelona |
|---|---|
| dc.contributor.author | Mañosa, Lluís |
| dc.contributor.author | Planes Vila, Antoni |
| dc.contributor.author | Ortín, Jordi, 1959- |
| dc.contributor.author | Martínez Benjamin, Joan Josep |
| dc.date | 2009-10-30T09:42:10Z |
| dc.date | 2009-10-30T09:42:10Z |
| dc.date | 1993 |
| dc.identifier.citation | 0163-1829 |
| dc.identifier.citation | 82266 |
| dc.identifier.uri | http://hdl.handle.net/2445/9885 |
| dc.description.abstract | We have investigated the different contributions to the entropy change at the martensitic transition of different families of Cu-based shape-memory alloys. The total entropy change has been obtained through calorimetric measurements. By measuring the evolution of the magnetic susceptibility with temperature, the entropy change associated with conduction electrons has been evaluated. The contribution of the anharmonic vibrations of the lattice has also been estimated using various parameters associated with the anharmonic behavior of these alloys, collected from the literature. The results found in the present work have been compared to values published for the martensitic transition of group-IV metals. For Cu-based alloys, both electron and anharmonic contributions have been shown to be much smaller than the overall entropy change. This finding demonstrates that the harmonic vibrations of the lattice are the most relevant contribution to the stability of the bcc phase in Cu-based alloys. |
| dc.format | 9 p. |
| dc.format | application/pdf |
| dc.language.iso | eng |
| dc.publisher | The American Physical Society |
| dc.relation | Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.48.3611 |
| dc.relation | Physical Review B, 1993, vol. 48, núm. 6, p. 3611-3619. |
| dc.relation | http://dx.doi.org/10.1103/PhysRevB.48.3611 |
| dc.rights | (c) The American Physical Society, 1993 |
| dc.rights | info:eu-repo/semantics/openAccess |
| dc.subject | Diagrames de fase |
| dc.subject | Transformacions de fase (Física estadística) |
| dc.subject | Termodinàmica |
| dc.subject | Phase diagrams |
| dc.subject | Phase transformations (Statistical physics) |
| dc.subject | Thermodynamics |
| dc.title | Entropy change of martensitic transformations in Cu-based shape-memory alloys |
| dc.type | info:eu-repo/semantics/article |
| dc.type | info:eu-repo/semantics/publishedVersion |
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