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Zr1.0Sn1.0Nb0.1Fe合金板材多道次热轧过程的有限元分析
英文标题:Finite element analysis on multi-pass hot rolling process for Zr-1.0Sn-1.0Nb-0.1Fe alloy sheet
作者:吴泽华1 王克鲁1 邓偲瀛2 宋鸿武2 张士宏2 王犇3 
单位:1.南昌航空大学 航空制造工程学院 2.中国科学院金属研究所 师昌绪先进材料创新中心 3.国核宝钛锆业股份公司 
关键词:Zr1.0Sn1.0Nb0.1Fe合金 热变形行为 多道次热轧 温度修正 峰值应力模型 
分类号:TG335.5
出版年,卷(期):页码:2022,47(6):132-140
摘要:

 通过等温热压缩实验研究了Zr1.0Sn1.0Nb0.1Fe合金在变形温度为550600650700 ℃和应变速率为0.010.1110 s-1以及最大变形程度为70%条件下的热变形行为。在考虑变形热效应的基础上,对真应力-真应变曲线进行了温度修正,并在Arrhenius双曲正弦函数方程的基础上建立了峰值应力模型。通过DeformZr1.0Sn1.0Nb0.1Fe合金板材在初始温度为630 ℃和轧制速度为304560 m·min-1条件下从板厚104 mm轧制至19 mm的多道次热轧过程进行了有限元模拟,并与热轧实验结果进行对比,验证了有限元模型的准确性。此外,研究了轧制速度对热轧过程中轧板温度、轧制力以及最终板厚的影响。结果表明:随着轧制速度的增大,轧板的表面温度和心部温度随之增大,而轧制力和最终板厚随之减小。

 The thermal deformation behavior of Zr-1.0Sn-1.0Nb-0.1Fe alloy under the conditions of deformation temperature of 550, 600, 650 and 700 , strain rate of 0.01, 0.1, 1 and 10 s-1 and maximum deformation amount of 70% was studied by isothermal hot compression experiment. Then, on the basis of considering deformation thermal effect, the true stress-ture strain curve was corrected by temperature, and the peak stress model was established on the basis of Arrhenius hyperbolic sine function equation. Furthermore, the multi-pass hot rolling process of Zr-1.0Sn-1.0Nb-0.1Fe alloy sheet at the initial temperature of 630 and the rolling speed of 30, 45 and 60 m·min-1 from the sheet thickness of 104 mm to 19 mm was simulated by Deform and compared with the experimental results of hot rolling to verify the accuracy of the finite element model. In addition, the influences of rolling speed on the rolled sheet temperature, rolling force and final sheet thickness during the hot rolling process were studied. The results show that with the increasing of rolling speed, the surface temperature and core temperature of rolled sheet increase, while the rolling force and the final sheet thickness decrease.

基金项目:
能源局核能重大专项(20192X06002001)
作者简介:
吴泽华(1995-),男,硕士研究生 E-mail:1289306859@qq.com 通信作者:邓偲瀛(1987-),女,博士,助理研究员 E-mail:sydeng@imr.ac.cn
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