ABAQUS-Based Simulation of Effect of High-Temperature Oxidation on Mechanical Properties of Chromium-Coated Zirconium Alloy
In order to clarify the influence of high-temperature oxidation on the mechanical properties of chromium-coated zirconium alloy cladding,a time-interval based and multi-layer material modeling strategy was proposed based on the high-temperature oxidation characteristics of chromium-coated zirconium alloy,and the mechanical response characteristics of the chromium-coated zirconium alloy cladding oxidized for different times was studied based on the finite element analysis software ABAQUS.The results showed that(a)when oxidized at 1 200 ℃ for less than 1 h,the decrease rate of Mises stress in the zirconium matrix was about 1.8 MPa/h,but the thickening of the Cr2O3 coating led to the increase in the stress in zirconium matrix;(b)with the extension of oxidation time,the tensile stress at the interface between coating and matrix gradually decreased to about 0.14 MPa;(c)when the chromium-coated zirconium alloy cladding was subjected to radial compressive load after high-temperature oxidation,the maximum circumferential tensile stress in the zirconium matrix appeared on the inner side of the direction of center angle θ=0/180°,and increased with the thickening of the Cr2O3 layer.
zirconium alloychromium coatingcladdingABAQUS softwarehigh temperature oxidation
万方数据
维普
