Creep testing and viscous behavior research on carbon constructional quality steel under high temperature
Creep tests under at a certain temperature and different stress levels were performed on two carbon constructional quality steels at a certain stress level and different temperatures, and their creep curves at high temperature were obtained based on analyzing the testing data. Taking 45 steel at a certain temperature and stress as the example, the integral creep constitutive equation and the differential stress-strain constitutive relationship were established based on the relevant theological model, and the integral core function was also obtained. Simultaneously, the viscous coefficients denoting the viscous behavior in viseo-plastic constitutive equation were determined by taking use of the creep testing data. Then the viscous coefficients of three carbon steels (20 steel, 35 steel and 45 steel) were compared and analyzed. The results show that the viscosity is different due to different materials at the same temperature and stress.
carbon constructional quality steel creep under high texture constitutive equation integral core function viscosity
YU Min(余敏) LUO Ying-she(罗迎社) PENG Xiang-hua(彭相华)
Institute of Rheological Mechanics and Material Engineering, Central South University of Forestry an Swan College of Central South University of Forestry and Technology, Changsha 410004, China
国际会议
长沙
英文
206-209
2008-09-28（万方平台首次上网日期，不代表论文的发表时间）