Volume 24, Issue 2 (February 2024)                   Modares Mechanical Engineering 2024, 24(2): 111-118 | Back to browse issues page

‎ 10.22034/MME.24.2.111

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Dabaghi M, Morakabati M. Determination Workability of The Novel Ti-3Al-8Mo-7V-3Cr Titanium Alloy via Ductilty Evaluation in Two-Phase Alpha-Beta and Single-Phase Beta Regions. Modares Mechanical Engineering 2024; 24 (2) :111-118
URL: http://mme.modares.ac.ir/article-15-74222-en.html
Determination Workability of The Novel Ti-3Al-8Mo-7V-3Cr Titanium Alloy via Ductilty Evaluation in Two-Phase Alpha-Beta and Single-Phase Beta Regions
Mahnaz Dabaghi1 , Maryam Morakabati * 2
1- Malek Ashtar University of Technology
2- Malek Ashtar University of Technology , m_morakabati@mut.ac.ir
Abstract:   (1086 Views)
In This study, in order to evaluation of ductility and consequently the optimum workability region of novel Ti-3Al-8Mo-7V-3Cr titanium alloy (Ti-3873), the hot tensile tests were performed at a constant strain rate of 0.1 s-1 and the temperature range of 650-850 ℃ . To establish the relationship between microstructural evolution and ductility, the microstructure of the specimen was examined by optical microscopy (OM) and scanning electron microscopy (SEM) after and before hot deformation. The results showed that ductility at the temperatures of 650-750 ℃ , increased from 33% to 54% as a consequence of transformation of α  to β  phases and gradually eliminating the α  phase. The maximum ductility obtained at 850 ℃  with a 71% increase in ductility. Microstructural studies showed the elongated and serrated boundaries confirmed the occurrence of dynamic recovery. Recrystallized grains were also observed at 850 ℃ . Therefore, it can demonstrate that the restoration mechanism of the Ti-3873 alloy during hot tension is dynamic recovery and partial dynamic recrystallization. Finally, according to tension results, the appropriate range of deformation deformation of the Ti-3873 alloy in this study is 800-850 ℃ .
Keywords: Novel Titanium Alloy, Hot Ductility, Hot Tension, Dynamic Recovery and Recrystallization
Full-Text [PDF 903 kb]   (960 Downloads)    
Article Type: Original Research | Subject: Plasticity
Received: 2024/03/10 | Accepted: 2024/06/1 | Published: 2024/01/30
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