锻压技术

应用热力学方法确定钛合金锻造热力参数

英文标题：The Determination of Thermomechanical Parameters for Forging Processes of Titanium Alloys by Using Thermodynamic Approach

作者：刘东崔刚罗子健郭乃成

单位：西北工业大学西北工业大学西北工业大学西北工业大学

关键词：热力学方法钛合金锻造热力参数

分类号：TG319;TG146.23

出版年,卷(期):页码：1994,19(6):3-7

摘要：

在耗散结构理论和材料动态行为模拟方法(DMM)的基础上,作者提出了一种确定锻造热力参数范围的方法,以获得组织和性能稳定一致的钛合金锻件。本文中以 TC11合金为例详细说明了应用所提出的方法确定锻造热力参数范围的过程,并首次提供对研究 TC11合金锤上和压力机上锻造过程有实用价值的曲线。根据试验研究结果,对于 TC11合金,在β/(α+β)相变点附近(但不超过相变点)采用大变形程度一次成形,有利于获得组织和性能稳定一致的锻件,而且对所用设备的要求比较宽松。

In order to Obtain titanium alloy forgings with reproducible microstructures and properties,a new method to determinate the thermomechanical parameters for forging processes was proposed based on the dissipative structure theory and dynamic material model(DMM).Taking TC11 titanium alloy for example,the proce- dure of applying the proposed appoach to determinating the forging process parameters was illustrated in detail.Some graphs valuable for defining the process window of TC11 titanium alloy forging processes using hammer or press were also presented for the first time in this article.The results of this study indicate that the reproducibility of microstructures and properties of the forgings can be guaranteed and a wide range of equipment can be selected for the forging processes while TC11 alloy forging processes are performed within a stroke by using large strain at the temperature as close as possible to β/(α+β)transus temperture.

基金项目：

国家自然科学基金和航空科学基金资助课题

参考文献：

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