Abstract
The influence of the twist rate of torsion under quasi-hydrostatic pressure on the phase composition, microstructure, and texture of superconducting Bi(Pb)2223-based ceramics is investigated at temperature Т = 865°C. It is established that a decrease in the twist rate leads to the displacement of the maxima of texture strength and of the secondary phase particle size toward smaller twist angles. The intergrowth of Bi(Pb)2223 matrix phase plates into (Sr, Ca)14Cu24O41 particles leading to the reduction of particle sizes is revealed. The reduction of (Sr, Ca)14Cu24O41 particle sizes correlates with the development of dynamic recrystallization of the matrix phase, which is confirmed by the texture weakening.
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