Superplastic Deformation Behaviors and Power Dissipation Rate for Fine-Grained Ti-6Al-4V Titanium Alloy Processed by Direct Rolling

Wang, Xin; Zhou, Ge; Men, Yue; Zhang, Siqian; Zhang, Haoyu; Li, Feng; Chen, Lijia

doi:10.3390/cryst12020270

Open AccessArticle

Superplastic Deformation Behaviors and Power Dissipation Rate for Fine-Grained Ti-6Al-4V Titanium Alloy Processed by Direct Rolling

by

Xin Wang

,

Ge Zhou

^*,

Yue Men

,

Siqian Zhang

,

Haoyu Zhang

,

Feng Li

and

Lijia Chen

School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China

^*

Author to whom correspondence should be addressed.

Crystals 2022, 12(2), 270; https://doi.org/10.3390/cryst12020270

Submission received: 10 January 2022 / Revised: 11 February 2022 / Accepted: 14 February 2022 / Published: 16 February 2022

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Abstract

Fine-grained Ti-6Al-4V titanium alloy plates were manufactured using a direct rolling approach, and a series of superplastic tensile tests were conducted at varying temperatures and strain rates. The maximum tensile elongation of 816% was obtained at 810 °C and 5 × 10⁻⁴ s⁻¹, and the superplastic flow behavior was dominated by a strain-induced grain boundary slip. In addition, the superplastic behaviors of the alloy were investigated, and the α-and β-phase Gibbs free energy was calculated. The vital role of phase β in the transformation was discussed from a thermodynamical perspective. A power dissipation rate model of Ti-6Al-4V during the superplastic deformation was built and used to predict the energy changing laws in the dynamic recrystallization and grain boundary sliding during the superplastic deformation.

Keywords: Ti-6Al-4V; superplastic deformation; thermodynamics; energy dissipation; mechanism of superplastic deformation

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MDPI and ACS Style

Wang, X.; Zhou, G.; Men, Y.; Zhang, S.; Zhang, H.; Li, F.; Chen, L. Superplastic Deformation Behaviors and Power Dissipation Rate for Fine-Grained Ti-6Al-4V Titanium Alloy Processed by Direct Rolling. Crystals 2022, 12, 270. https://doi.org/10.3390/cryst12020270

AMA Style

Wang X, Zhou G, Men Y, Zhang S, Zhang H, Li F, Chen L. Superplastic Deformation Behaviors and Power Dissipation Rate for Fine-Grained Ti-6Al-4V Titanium Alloy Processed by Direct Rolling. Crystals. 2022; 12(2):270. https://doi.org/10.3390/cryst12020270

Chicago/Turabian Style

Wang, Xin, Ge Zhou, Yue Men, Siqian Zhang, Haoyu Zhang, Feng Li, and Lijia Chen. 2022. "Superplastic Deformation Behaviors and Power Dissipation Rate for Fine-Grained Ti-6Al-4V Titanium Alloy Processed by Direct Rolling" Crystals 12, no. 2: 270. https://doi.org/10.3390/cryst12020270

APA Style

Wang, X., Zhou, G., Men, Y., Zhang, S., Zhang, H., Li, F., & Chen, L. (2022). Superplastic Deformation Behaviors and Power Dissipation Rate for Fine-Grained Ti-6Al-4V Titanium Alloy Processed by Direct Rolling. Crystals, 12(2), 270. https://doi.org/10.3390/cryst12020270

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Superplastic Deformation Behaviors and Power Dissipation Rate for Fine-Grained Ti-6Al-4V Titanium Alloy Processed by Direct Rolling

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