Effects of Process Parameters on the Temperature Field in Ti-6Al-4V Alloy Blade Precision Forging Process  

作　　者：Yuli LIU He YANG Tao GAO Mei ZHAN 

机构地区：[1]College of Materials Science and Engineering, Northwestern Polytechnical University, Xi＇an 710072, China

出　　处：《Journal of Materials Science & Technology》2006年第4期473-477,共5页材料科学技术（英文版）

基　　金：The authors express their appreciation for the financial support of the Aeronautical Science Foundation of China （No. 02H53061）; the National Natural Science Foundation of China for Distinguished Young Scholar （No. 50225518） ;the Innovation Foundation of Ph.D. Dissertation in NPU of China （No. CX200405）.

摘　　要：Blade precision forging is a high temperature and large plastic deformation process. Process parameters have a great effect on temperature distribution in billet, so in this paper, by taking a Ti-6Al-4V alloy blade with a tenon as an object, the influence of process parameters on the temperature distribution in precision forging process was investigated using 3D coupled thermo-mechanical FEM （finite element method） code developed by the authors. The results obtained illustrate that： （1） the gradient of temperature distribution increases with increasing the deformation degree; （2） with increasing the initial temperature of the billet, the zones of high temperature become larger, and the gradient of temperature distribution hardly has any increase; （3） friction factors have little effect on the distribution of temperature field; （4） with increasing upper die velocity, temperature of the billet increases while the temperature gradient in billet decreases. The results are helpful to the design and optimization of the process parameters in precision forging process of Ti-alloy blade.Blade precision forging is a high temperature and large plastic deformation process. Process parameters have a great effect on temperature distribution in billet, so in this paper, by taking a Ti-6Al-4V alloy blade with a tenon as an object, the influence of process parameters on the temperature distribution in precision forging process was investigated using 3D coupled thermo-mechanical FEM （finite element method） code developed by the authors. The results obtained illustrate that： （1） the gradient of temperature distribution increases with increasing the deformation degree; （2） with increasing the initial temperature of the billet, the zones of high temperature become larger, and the gradient of temperature distribution hardly has any increase; （3） friction factors have little effect on the distribution of temperature field; （4） with increasing upper die velocity, temperature of the billet increases while the temperature gradient in billet decreases. The results are helpful to the design and optimization of the process parameters in precision forging process of Ti-alloy blade.

关 键 词：Ti-alloy blade Precision forging Process parameter Temperature field Finite element method （FEM） 

分 类 号：TG316[金属学及工艺—金属压力加工]