Modeling of tensional behavior of 22MnB5 boron steel at isothermal conditions by extended crystal plasticity
An improved integration model based on crystal plasticity is presented to describe the thermo-mechanical coupled response of 22MnB5 boron steel deformation at elevated temperatures.Considering the thermal kinematics,the plastic deformation gradient is chosen as the basic integration variable.The corresponding governing equation is solved by implicit method to ensure numerical stability.The convergent plastic deformation contains information of plastic deformation and can also reflect the thermal effects.Comparison with traditional algorithm,the presented model can be used in the coupled thermo-mechanical analysis.Using this numerical model,we computed the tension response of the material at temperatures 600-900℃ and at strain rates from 0.01s-1 to 0.1 s-1.The predicted results agree well with the experimental data.
Crystal Plasticity Integration Model 22MnB5 Boron Steel Isothermal Deformation
Dan ZHAO Yiguo ZHU Ping HU Wanxi ZHANG
State Key Laboratory of Structural Analysis for Industrial Equipment,Faculty of Vehicle Engineering and Mechanics,Dalian University of Technology,2 Linggong Road,Da Lian 116023,China
国际会议
沈阳
英文
304-310
2013-07-06（万方平台首次上网日期，不代表论文的发表时间）