کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7881424 1509599 2014 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modeling the electrical resistivity of deformation processed metal-metal composites
ترجمه فارسی عنوان
مدل سازی مقاومت الکتریکی از تغییر شکل فلزات فلزی کامپوزیت
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی
Deformation processed metal-metal (matrix-reinforcement) composites (DMMCs) are high-strength, high-conductivity in situ composites produced by severe plastic deformation. The electrical resistivity of DMMCs is rarely investigated mechanistically and tends to be slightly higher than the rule-of-mixtures prediction. In this paper, we analyze several possible physical mechanisms (i.e. phonons, interfaces, mutual solution, grain boundaries, dislocations) responsible for the electrical resistivity of DMMC systems and how these mechanisms could be affected by processing conditions (i.e. temperature, deformation processing). As an innovation, we identified and assembled the major scattering mechanisms for specific DMMC systems and modeled their electrical resistivity in combination. From this analysis, it appears that filament coarsening rather than dislocation annihilation is primarily responsible for the resistivity drop observed in these materials after annealing and that grain boundary scattering contributes to the resistivity at least at the same magnitude as does interface scattering.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 77, 15 September 2014, Pages 151-161
نویسندگان
, , , ,