Convective Heat Transfer Steady Heat Conduction in a Ti-6Al-4V/ZrO2 Composite FGM Plate Considered Temperature Dependency

Abstract

The convective heat transfer steady heat conduction in a Ti-6Al-4V/ZrO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> composite FGM plate considered temperature dependency was analyzed by nonlinear finite element method. From numerical calculation, when, T0 = 300 K, Ta = 500 K and Tb = 1 650 K, the steady heat conduction distributions in the plate were obtained. The numerical results show that the temperature distribution in the composite plate is more reasonable with the increase of the FGM layer thickness. With the increase of M, the temperature on the surface of ceramics reduces by 10.4%. With the increase of porosity, there is an abrupt change for temperature in the middle of the plate, its value is about 770 K. Compared with the results of constant material properties, the maximum temperature on the surface of metal in a three-layered composite FGM plate considered temperature dependency reduces by 8.3%. Compared with, when, the temperature on the surface of metal reduces by 19.8% and the temperature on the surface of ceramics increases by 43.2%. Compared with the nongraded two-layered composite plate, the temperature of the ceramic/metal composite FGM plate are very gentle and smooth. The results provide the foundations of theoretical calculation for the design and application and the further analysis of thermal stress of the ceramic/metal composite FGM plate.