Elevated Temperature Mechanical Characteristics and Fracture Behavior of a Novel Beta Titanium Alloy

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Sajadifar, S.V.; Maier, H.J.; Niendorf, T.; Yapici, G.G.: Elevated Temperature Mechanical Characteristics and Fracture Behavior of a Novel Beta Titanium Alloy. In: Crystals 13 (2023), Nr. 2, 269. DOI: https://doi.org/10.3390/cryst13020269

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Abstract: 
In the present work, the elevated-temperature deformation characteristics and microstructural evolution of a Ti-5V-5Mo-5Cr-4Al alloy in solution-treatment conditions were studied under a tensile load at temperatures in the range of 25 to 550 °C and strain rates between 0.001 and 0.1 s-1. The results obtained indicated that, essentially, dynamic recovery (DRV) was the dominant softening mechanism in the case of the regimes considered. An analysis based on transmission electron microscopy (TEM) and the assessment of the mechanical behavior of the solution-heat-treated Ti-5V-5Mo-5Cr-4Al alloy revealed that dynamic precipitation (DPN) only took place at a strain rate of 0.001 s-1 and at temperatures of 450 °C and 500 °C. Void coalescence occurred upon an increase in the deformation temperature and a decrease in the strain rate due to a higher rate of diffusion and the provision of sufficient time for growth, respectively. The results obtained in the present study pave the way for the robust processing of this novel ß titanium alloy. Depending on the deformation parameters, the deformation characteristics can be governed by either DRV (at moderate temperatures) or DPN (at moderate temperatures and at low rates of deformation).
License of this version: CC BY 4.0 Unported
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2023
Appears in Collections:Fakultät für Maschinenbau

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pos. country downloads
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1 image of flag of Germany Germany 10 25.64%
2 image of flag of United States United States 8 20.51%
3 image of flag of India India 4 10.26%
4 image of flag of Romania Romania 3 7.69%
5 image of flag of Poland Poland 2 5.13%
6 image of flag of Korea, Republic of Korea, Republic of 2 5.13%
7 image of flag of Indonesia Indonesia 2 5.13%
8 image of flag of Czech Republic Czech Republic 2 5.13%
9 image of flag of Qatar Qatar 1 2.56%
10 image of flag of China China 1 2.56%
    other countries 4 10.26%

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