Mechanical energy losses in plastically deformed and electron plus neutron irradiated high purity single crystalline molybdenum at elevated temperatures

Authors

  • Griselda I. Zelada,

    1. Laboratorio de Materiales, Escuela de Ingeniería Eléctrica, Facultad de Ciencias Exactas, Ingeniería y Agrimensura, Universidad Nacional de Rosario, Avda. Pellegrini 250, 2000 Rosario, Argentina
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  • Osvaldo Agustin Lambri,

    Corresponding author
    1. Laboratorio de Materiales, Escuela de Ingeniería Eléctrica, Facultad de Ciencias Exactas, Ingeniería y Agrimensura, Universidad Nacional de Rosario, Avda. Pellegrini 250, 2000 Rosario, Argentina
    2. Instituto de Física Rosario – CONICET, Member of the CONICET's Research Staff, Avda. Pellegrini 250, 2000 Rosario, Argentina
    • Phone: +54 341 480 2649, ext: 125, Fax: +54 341 482 1772
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  • Patricia B. Bozzano,

    1. Laboratorio de Microscopía Electrónica, Unidad de Actividad Materiales, Centro Atómico Constituyentes, Comisión Nacional de Energía Atómica, Avda. Gral. Paz 1499, 1650 San Martín, Argentina
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  • José Angel García

    1. Departamento de Física Aplicada II, Facultad de Ciencias y Tecnología, Universidad del País Vasco, Apdo. 644, 48080 Bilbao, País Vasco, Spain
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Abstract

Mechanical spectroscopy (MS) and transmission electron microscopy (TEM) studies have been performed in plastically deformed and electron plus neutron irradiated high purity single crystalline molybdenum, oriented for single slip, in order to study the dislocation dynamics in the temperature range within one third of the melting temperature. A damping peak related to the interaction of dislocation lines with both prismatic loops and tangles of dislocations was found. The peak temperature ranges between 900 and 1050 K, for an oscillating frequency of about 1 Hz.

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