Abstract
Accurate flow stress data and microstructure evolution mechanisms are essential for designing and optimizing thermal processing technology for a wide range of metal materials. In this paper, the compression experiment of Ti–6Al–4V alloy were carried out by Gleeble-3500 thermal simulation machine under high-temperature conditions. The constitutive model of alloy was established by the PSO-BP neural network based on the corrected flow stress. And the Najafizadeh–Jonas and Cingara–McQueen model were used to establish critical strain model. Then, JMAK equation and AGS model were constructed by the linear regression method. A numerical simulation model was also developed to simulate the hot behavior of titanium alloy. The results indicate that the prediction error of the FE model for predicting DRX volume fraction and AGS is less than 5%. The research results have a good prediction ability for predicting plastic deformation and microstructure in industrial production.
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The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
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Acknowledgments
This study was supported by the financial support from the National Natural Science Foundation of China (52375345) and Aviation Engine Independent Innovation Special Foundation of China (ZZCX-2018-031).
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RF contributed to Writing of the original draft, Methodology, and Investigation. MC contributed to Writing, reviewing, & editing of the manuscript, Supervision, and Project administration. LX contributed to Conceptualization.
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Feng, R., Chen, M. & Xie, L. Research on hot deformation behavior and numerical simulation of microstructure evolution for Ti–6Al–4V alloy. Journal of Materials Research 39, 1108–1127 (2024). https://doi.org/10.1557/s43578-024-01295-8
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DOI: https://doi.org/10.1557/s43578-024-01295-8