Examinando por Autor "Vidoz, A. E."

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  • Miniatura
    ÍtemAcceso Abierto
    Influencia del orden de largo alcance en las propiedades mecánicas de las soluciones sólidas.
    (Comisión Nacional de Energía Atómica (Argentina), 1965) Vidoz, A. E.; Victoria M.
    A review is offered on the influence of long range order on the mechanical properties of solid solutions. Some brief ideas about crystaline order and dislocations in ordered structures are previously given to make easier to the reader the understanding of the paper. A critical review is made in which new ideas are introduced. A modification of Vidoz and Broun deformation mechanism is proposed to give more generality to the model. Experimental results are analized in detail.
  • Miniatura
    ÍtemAcceso Abierto
    Tensile behavior upon ordering of Ni3Fe single crystals.
    (Comisión Nacional de Energía Atómica (Argentina), 1967) Victoria, M.; Vidoz, A. E.
    The tensile properties of ordered and disordered Ni3Fe single crystal have been investigated. Also, poly crystalline specimens have been tested to show the influence of grain size on the deformation characteristics of Ni3Fe. Measurements have been made to determine the influence of parameters such as the initial orientation of the tensile axis of single crystals, the ordered domain size, and the test temperature on the mechanical properties of Ni3Fe. Tensile axis reorientation during deformation was followed with x-ray techniques. It was found that in ordered single crystals, the measured tensile axis rotation agrees well with the calculated values if one activated glide system is assumed. The influence of secondary slip on the tensile characteristics of ordered crystals was determined by using specimens oriented for multiple glide. It is demonstrated that the work hardening rate increases with the occurrence of secondary slip. The strain-aging phenomena shown previously in poly crystalline Ni3Fe was found to occur also in single crystals. The nature of the observed effects in ordered Ni3Fe is interpreted in terms of the antiphase boundary tube mechanism.