Enhancing the superplastic deformation capabilities of the Ti-6Al-4V alloy using superimposed oscillations

IF 6.1 1区工程技术 Q1 ENGINEERING, MANUFACTURING

Journal of Manufacturing Processes Pub Date : 2024-11-20 DOI:10.1016/j.jmapro.2024.11.025

Zackary Fuerth , Mohammad Shirinzadeh Dastgiri , Daniel Green , Eugene Ryzer , William Altenhof

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Abstract

This study investigates the effect of imposing low frequency, low amplitude oscillations during uniaxial tensile tests on the mechanical behaviour of the Ti-6Al-4V alloy under a typical superplastic temperature of 900 °C. Different material models were used to simulate these tests with the finite element software ABAQUS. A creep strain power model fit through an iterative FEA process yielded a high correlation to the force/displacement and thinning results from uniaxial tensile tests. The developed material models with and without oscillation materials were also used to simulate a free-bulge forming process within the strain rate range of 0.0003 to 0.01 s⁻¹ under constant strain rate testing. Within the domain of the parts formed in this study, the improvement in the forming time ranged from a 120 % reduction at elevated strain rates and reduced part complexity to 520 % in the most complex part geometry.

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利用叠加振荡增强 Ti-6Al-4V 合金的超塑性变形能力

本研究探讨了单轴拉伸试验期间施加低频、低振幅振荡对典型超塑性温度（900 °C）下 Ti-6Al-4V 合金机械性能的影响。在使用有限元软件 ABAQUS 模拟这些试验时，使用了不同的材料模型。通过迭代有限元分析过程拟合的蠕变应变功率模型与单轴拉伸试验的力/位移和减薄结果具有很高的相关性。在恒定应变速率测试中，所开发的带振荡材料和不带振荡材料的材料模型还被用于模拟应变速率范围为 0.0003 至 0.01 s-1 的自由凸起成形过程。在本研究中形成的零件范围内，成形时间的改善幅度为：在应变率较高、零件复杂度较低的情况下，成形时间缩短了 120%；在零件几何形状最复杂的情况下，成形时间缩短了 520%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Manufacturing Processes ENGINEERING, MANUFACTURING-

CiteScore

10.20

自引率

11.30%

发文量

833

审稿时长

50 days

期刊介绍： The aim of the Journal of Manufacturing Processes (JMP) is to exchange current and future directions of manufacturing processes research, development and implementation, and to publish archival scholarly literature with a view to advancing state-of-the-art manufacturing processes and encouraging innovation for developing new and efficient processes. The journal will also publish from other research communities for rapid communication of innovative new concepts. Special-topic issues on emerging technologies and invited papers will also be published.