TC11合金本构关系的建立及其在盘件等温锻造工艺设计中的应用

Constitutive Relationship of TC11 Alloy and Its Application in Hot Die Forging Process of Disc Component Using Finite Element Method

摘要:

通过在Gleeble 1500上试验机的热模拟压缩实验，分析了TC11合金的高温变形特性，进而，采用非线性回归方法建立了Kumar型的TC11合金的材料本构关系，并对该本构模型在热加工参数范围的延拓性进行了分析。结果表明，该模型具有较高的描述精度及良好的数值延拓性和稳定性。为了进一步验证该材料模型的工程实用性，将其应用于MARC／Autoforge3．1有限元商业软件，对TC11合金某型号涡轮盘的等温锻造工艺进行模拟式工艺设计。分析结果表明，该材料模型能够满足工程实用要求。

Abstract:

Based on test data from hot process simulator, a Kumar type constitutive equation for TC11 ahoy is established in this paper. Applying this cortstitutive equation in commercial FEM software of MSC /Autoforge, hot die forging process of TC11 alloy turbine disc is then simulated. The results show that the Kumar-type constitutive relationship meets the practical need to a great extent.