Establishment of Creep Aging Power Law Constitutive Equation of SiC_p/2024Al Composites
Author of the article:SUN Youping;HU Yijie;TAO Defu;HE Jiangmei;LI Wangzhen
Author's Workplace：School of Mechanical and Transportation Engineering, Guangxi University of Science and Technology, Liuzhou 545006,China
Key Words：SiCp/2024Al composites creep aging constitutive model
Abstract：
The creep aging behavior of SiCp/2024 Al composites was studied on the electronic creep machine at the temperature from 423 to 463 K and under the stress of 150, 175 and 200 MPa. The constitutive model of SiCp/2024 Al composites between steady state creep rate and experimental stress and aging temperature was established by power law constitutive equation and linear regression analysis of experimental data. The results show that the steady creep rate of SiCp/2024 Al composites increases with the increase of experimental stress and aging temperature, and the duration of creep curve in the second stage decreases. The calculated value of steady creep rate is basically consistent with the experimental value, which indicates that the constitutive model can accurately describe the creep aging behavior of SiCp/2024 Al composites.
