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Anelastic relaxation in high purity molybdenum single crystals at medium temperatures |
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| Authors: | O. A. Lambri , G. I. Zelada-Lambri , L. M. Salvatierra , J. A. Garcí a ,J. N. Lomer |
| Affiliation: | a Laboratorio de Materiales Eléctricos, Facultad de Ciencias Exactas, Ingeniería y Agrimensura. Universidad Nacional de Rosario—CONICET Avda 27 de febrero 210 bis (2000), Rosario, Argentina b Departamento de Física Aplicada II, Universidad del País Vasco, País Vasco, Spain c JJ Thompson Physical Laboratory, Reading University, Reading Berks, GB, UK |
| Abstract: | The internal friction of deformed molybdenum single crystals with two different orientations has been measured in the 300–1300 K temperature range. After annealing to 950 K, a relaxation peak is seen in the 880–840 K range, with a hysteresis between the warming and cooling runs. For higher annealing temperatures, the peak position change to 970 K for the 1 1 0 and 1040 K for the 1 4 9 sample. The influence of a bias stress on the sample relaxation was studied. Possible mechanisms for this relaxation have been considered, and an interaction of dislocations with vacancy type point defects has been proposed. |
| Keywords: | Author Keywords: Molybdenum Internal friction Dislocations |
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