کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
652514 885022 2010 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dependency of the thermal and electrical conductivity on the temperature and composition of Cu in the Al based Al–Cu alloys
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Dependency of the thermal and electrical conductivity on the temperature and composition of Cu in the Al based Al–Cu alloys
چکیده انگلیسی

The variations of thermal conductivity with temperature for Al–[x] wt.% Cu, x = 3, 6, 15 and 24 alloys were measured by using a radial heat flow apparatus. The variations of electrical conductivity of solid phases versus temperature for the same alloys were determined from the Wiedemann–Franz and Smith–Palmer equations by using the measured values of thermal conductivity. From the graphs of thermal and electrical conductivity versus temperature, the thermal conductivity of the solid phases at their melting temperatures, and the thermal temperature and the electrical coefficients for the same alloys were obtained. Dependency of the thermal and electrical conductivity on the composition of Cu in the Al based Al−Cu alloys were also investigated. According to present experimental results, the thermal and electrical conductivity of Al–[x] wt.% Cu, x = 3, 6, 15 and 24 alloys linearly decrease with increasing the temperature and composition of Cu. The enthalpy of fusion and the specific heat change during the transformation for the same alloys were determined from cooling trace during the transformation from eutectic liquid to eutectic solid by means of differential scanning calorimeter (DSC).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Experimental Thermal and Fluid Science - Volume 34, Issue 8, November 2010, Pages 1507–1516
نویسندگان
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