【摘 要】
：
在Gleeble-3500热模拟试验机上对2.25Cr1Mo0.25V钢进行等温压缩试验,得到变形温度在900~1200℃、应变速率在0.001~10 s-1、变形量为60%时的高温流动应力-应变曲线。结合金相
【机 构】
：
北京机电研究所,中国第一重型机械集团公司,
论文部分内容阅读
在Gleeble-3500热模拟试验机上对2.25Cr1Mo0.25V钢进行等温压缩试验,得到变形温度在900~1200℃、应变速率在0.001~10 s-1、变形量为60%时的高温流动应力-应变曲线。结合金相实验,研究2.25Cr1Mo0.25V钢在不同变形条件下微观组织的演变规律,建立2.25Cr1Mo0.25V钢在高温塑性变形过程中的动态再结晶数学模型。将模型与有限元结合,对热压缩过程的组织演化进行数值模拟,模拟结果与试验结果的相对误差小于11%,验证了模型的正确性。
The isothermal compressive test of 2.25Cr1Mo0.25V steel on Gleeble-3500 thermal simulator was carried out, and the high temperature flow stress-strain at deformation temperature of 900-1200 ℃, strain rate of 0.001-10 s-1 and deformation of 60% curve. Based on the metallographic experiment, the microstructure evolution of 2.25Cr1Mo0.25V steel under different deformation conditions was studied. The dynamic recrystallization mathematical model of 2.25Cr1Mo0.25V steel during plastic deformation under high temperature was established. The model was combined with the finite element method to simulate the microstructure evolution of the hot compression process. The relative error between the simulation results and the experimental results was less than 11%, which proves the correctness of the model.
其他文献
请下载后查看，本文暂不支持在线获取查看简介。摄影42℃展板@侯小勤$武警新疆总队
Please download to view, this article does not support online access to view profile
请下载后查看，本文暂不支持在线获取查看简介。
Please download to view, this article does not support online access to view profile.
The pitfalls of applying the commonly used definition of available gravitational potential energy (AGPE) to the world oceans are re-examined. It is proposed tha
本期封面刊发的是油画《年轮》。《年轮》作者王进,男,1964年生人,现为内蒙古美术家协会、书法家协会会员。油画《年轮》是作者1987年7月就读于内蒙古呼伦贝尔学院美术系时的
采用动态拉伸试验方法对双相高强钢B340-590DP的动态变形行为进行了研究,试验的应变速率为0.003~530s-1,得到了不同应变速率下的应力-应变曲线。并对不同应变速率下的材料伸
The heat distributions in the upper layers of the ocean have been studied and some important low frequency oscillations (LFOs) are already found and quantified
本文将环芯法和切槽法分别与云纹干涉技术相结合,对过盈配合试样中的残余应力进行了测量.对于环芯云纹干涉法,通过使用不同焦距的场镜与CCD相结合,获得了变视场区域不同放大
Under the assumption that the sea bottom is an almost-flat and randomly rough thin layer, a spatial correlation model for bottom reverberation is constructed. A
请下载后查看，本文暂不支持在线获取查看简介。
Please download to view, this article does not support online access to view profile.
本文通过查阅大量运动猝死文献,探究运动猝死的病因及其产生原因,为因运动猝死事件的产生而出现负面心理影响学生和教师提出相应防范措施,引导学生正确认识运动猝死,打消顾虑