| Revista: | Materials research |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000312723 |
| ISSN: | 1516-1439 |
| Autores: | Gonzalez, Cezar Henrique1 Quadros, Ney Freitas de Araujo, Carlos Jose de2 Morin, Michel3 Guenin, Gerard |
| Instituciones: | 1Universidade Federal de Pernambuco, Departamento de Engenharia Mecanica, Recife, Pernambuco. Brasil 2Universidade Federal de Campina Grande, Departamento de Engenharia Mecanica, Campina Grande, Paraiba. Brasil 3Institut National des Sciences Appliquees, Lyon, Rhone-Alpes. Francia |
| Año: | 2004 |
| Periodo: | Abr-Jun |
| Volumen: | 7 |
| Número: | 2 |
| Paginación: | 305-311 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Nota breve o noticia |
| Enfoque: | Experimental |
| Resumen en inglés | Recently, electrical resistivity (ER) measurements have been done during some thermomechanical tests in copper based shape memory alloys (SMA's). In this work, single crystals of Cu-based SMA's have been studied at different temperatures to analyse the relationship between stress (s) and ER changes as a function of the strain (e). A good consistency between ER change values is observed in different experiments: thermal martensitic transformation, stress induced martensitic transformation and stress induced reorientation of martensite variants. During stress induced martensitic transformation (superelastic behaviour) and stress induced reorientation of martensite variants, a linear relationship is obtained between ER and strain as well as the absence of hys teresis. In conclusion, the present results show a direct evidence of martensite electrical resistivity anisotropy |
| Disciplinas: | Ingeniería |
| Palabras clave: | Ingeniería de materiales, Ingeniería mecánica, Aleaciones de memoria de forma, Cobre, Resistencia, Propiedades eléctricas, Elasticidad |
| Keyword: | Engineering, Materials engineering, Mechanical engineering, Shape memory alloys, Copper, Resistance, Electrical properties, Elasticity |
| Texto completo: | Texto completo (Ver HTML) |
