Purpose

With the discussion on the linear relationship of determined material parameters, this study aims to propose a new method to analyze the deformation mechanism.

Design/methodology/approach

A modified constitutive model based on the hyperbolic sine Arrhenius equation has been established, which is applied to describe the flow behavior of Ti-6Al-4V alloy during the superplastic forming (SPF).

Findings

The modified constitutive model in this work has a good ability to describe the flow behavior for Ti-6Al-4V in SPF. Besides, a deformation map of titanium material is obtained based on the parameters. As the supplement, finite element models of high-temperature tensile tests are carried out as the application of the constitutive model.

Originality/value

The relationship between constitutive model parameters and forming mechanism is established, which is a new angle in rheological behavior research and constitutive model analysis.

中文翻译：

---

超塑性成形时 Ti-6Al-4V Arrhenius 模型参数的线性分析

目的

通过讨论确定的材料参数的线性关系，本研究旨在提出一种分析变形机制的新方法。

设计/方法/方法

建立了基于双曲正弦Arrhenius方程的修正本构模型，用于描述超塑性成形（SPF）过程中Ti-6Al-4V合金的流动行为。

发现

这项工作中修改后的本构模型能够很好地描述 SPF 中 Ti-6Al-4V 的流动行为。此外，根据参数得到钛材料的变形图。作为本构模型的补充，建立了高温拉伸试验的有限元模型。

原创性/价值

建立了本构模型参数与成型机理的关系，为流变行为研究和本构模型分析开辟了一个新的视角。