Author
Sajadifar, Seyed Vahid, Maier, H. J., Niendorf, T., Yapıcı, Güney Güven
Publication Date
2023-02-03
Publication Place
-
MDPI
Subject
Beta titanium, Dynamic precipitation, Dynamic recovery, Elevated temperature, Forming, Fracture morphology, Mechanical behavior, Ti-5V-5Mo-5Cr-4Al alloy
Type
Periodical
Language
English
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
2073-4352
Record ID
6ffa241f-60d3-498d-8db6-6f9e07d5e1e7
Library Location
Mechanical Engineering
Date
2023-02-03
Sample Text
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 β 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).
DOI
10.3390/cryst13020269
Cilt
13
