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

ISSN号：1005-0302
期刊名称：《材料科学技术学报：英文版》
时间：0
分类：TG316[金属学及工艺—金属压力加工]
作者机构：[1]College of Materials Science and Engineering, Northwestern Polytechnical University, Xi＇an 710072, China
相关基金：Acknowledgements 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） and the Innovation Foundation of Ph.D. Dissertation in NPU of China （No. CX200405）.

作者： Yuli LIU He YANG Tao GAO Mei ZHAN[1]

关键词：钛合金刀片, 精密锻造, 工艺参数, 温度场, 有限元法, Ti-alloy blade, Precision forging, Process parameter, Temperature field, Finite element method （FEM）

中文摘要：

片精确前进是高温度和大塑料变丑过程。进程参数在营舍在温度分发上有大效果，那么在这篇论文，由拿有象一个对象的雄榫的 Ti-6AI-4V 合金片，在伪造进程的精确的温度分发上的进程参数的影响用 3Dcoupled 被调查thermo机械女性(有限元素方法)代码由作者发展了。获得的结果说明那：(1 ) 温度分发的坡度与增加变丑度增加；(2 ) 与增加营舍的起始的温度，高温度的地区变得更大，并且温度分发的坡度几乎没有任何增加；(3 ) 磨擦因素在温度地的分发上有小效果；(4 ) 与增加上面死速度，当在营舍的温度坡度减少时，营舍的温度增加。结果对在伪造 Ti 合金片的过程的精确的过程参数的设计和优化有用。

英文摘要：

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.

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