A method for prediction of unstable deformation in hot forging process by simulation  

一种预测金属锻造过程失稳变形的模拟方法(英文)

作　　者：鲁世强[1] 李鑫[2] 王克鲁[2] 刘诗彪 傅铭旺[3] 

机构地区：[1]南昌航空大学材料科学与工程学院,南昌330063 [2]南昌航空大学航空制造工程学院,南昌330063 [3]香港理工大学机械工程系

出　　处：《Transactions of Nonferrous Metals Society of China》2013年第12期3739-3747,共9页中国有色金属学报（英文版）

基　　金：Project (51005112) supported by the National Natural Science Foundation of China;Project (GF200901008) supported by the Open Fund of National Defense Key Disciplines Laboratory of Light Alloy Processing Science and Technology,China

摘　　要：A method is proposed for prediction of the unstable deformation in hot forging process using both the determined thermomechnical parameter windows of the unstable deformation zones and finite element simulation. Taking Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy as the testing material, the thermomechnical parameter windows of the unstable deformation zones for the Ti-alloy are integrated into a commercial finite element simulation software platform. The distribution and variation of the unstable deformation zones of the alloy in hot compression process are simulated and predicted using the tailor-made finite element codes in the finite element platform. The simulation results tally with the physical experiments and the proposed method for simulation and prediction of the unstable deformation is thus verified and its efficiency is validated.提出一种利用失稳变形区热力参数窗口条件和有限元模拟相结合来预测锻造失稳变形的方法,并以Ti-6.5Al-3.5Mo-1.5Zr-0.3Si合金为例,将该钛合金的失稳变形区热力参数窗口条件集成到商业化的有限元模拟软件平台中。利用二次开发后的有限元模拟软件平台模拟了该钛合金在热压缩过程中失稳变形区的分布及其变化。模拟预测结果与实验结果吻合较好,说明所提出的失稳变形模拟与预测方法是可行和有效的。

关 键 词：instability map unstable deformation instability deformation simulation Ti-6.5Al-3.5Mo-1.5Zr-0.3Si titanium alloy 

分 类 号：TG316[金属学及工艺—金属压力加工]