The ignition of a low-alloy titanium ?-alloy during fracture in an oxygen-containing atmosphere

Deryabina, V. I.; Kolgatin, N. N.; Luk'yanov, O. P.; Mikhaleva, R. S.; Teodorovich, V. P.

doi:10.1007/bf00723004

Cited by 6 publications

(1 citation statement)

References 3 publications

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“…1 However, titanium and titanium alloys have a fatal weakness of their combustion sensitivity, which has been well documented. [2][3] Thin sections of conventional titanium alloys will burn in air when ignited by a localised heat source such as friction heating due to a heavy rub. Developing the burn resistant titanium alloys will extend their application to more components of aero engines, thus displacing steels and nickel alloys of almost twice the density.…”

Section: Introductionmentioning

confidence: 99%

Hot workability of burn resistant Ti–35V–15Cr–0.3Si–0.1C alloy

Zhang

Zeng

Zhou

et al. 2016

Materials Science and Technology

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In this study, hot workability of Ti-35V-15Cr-0.3Si-0.1C alloy is investigated in the temperature range of 900-11508C and strain rate range of 0.01-10 s 21 using processing maps. In the maps, the stability domain displays the feature of dynamic recrystallisation and dynamic recovery. The fraction of recrystallisation in this alloy is much larger than that in other b-Ti alloys, which can be attributed to the effect of titanium carbides by a 'particle stimulated nucleation' mechanism. Higher temperature and lower strain rate are helpful for breaking down the carbides and improving the workability. However, deforming .11008C would result in grain coarsening. In instability domain, the occurrence of flow localisation, shear bands and cracking is discussed. The optimised processing window is in 1050-11008C /0.01-0.1 s 21 .

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Section: Introductionmentioning

confidence: 99%

Hot workability of burn resistant Ti–35V–15Cr–0.3Si–0.1C alloy

Zhang

Zeng

Zhou

et al. 2016

Materials Science and Technology

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1999

Arch Otolaryngol Head Neck Surg

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Prediction of Fracture Initiation in Hot Compression of Burn-Resistant Ti-35V-15Cr-0.3Si-0.1C Alloy

Zhang

Zeng

Zhou

et al. 2015

J. of Materi Eng and Perform

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An important concern in hot working of metals is whether the desired deformation can be accomplished without fracture of the material. This paper builds a fracture prediction model to predict fracture initiation in hot compression of a burn-resistant beta-stabilized titanium alloy Ti-35V-15Cr-0.3Si-0.1C using a combined approach of upsetting experiments, theoretical failure criteria and finite element (FE) simulation techniques. A series of isothermal compression experiments on cylindrical specimens were conducted in temperature range of 900-1150°C, strain rate of 0.01-10 s 21 first to obtain fracture samples and primary reduction data. Based on that, a comparison of eight commonly used theoretical failure criteria was made and Oh criterion was selected and coded into a subroutine. FE simulation of upsetting experiments on cylindrical specimens was then performed to determine the fracture threshold values of Oh criterion. By building a correlation between threshold values and the deforming parameters (temperature and strain rate, or Zener-Hollomon parameter), a new fracture prediction model based on Oh criterion was established. The new model shows an exponential decay relationship between threshold values and ZenerHollomon parameter (Z), and the relative error of the model is less than 15%. This model was then applied successfully in the cogging of Ti-35V-15Cr-0.3Si-0.1C billet.

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The ignition of a low-alloy titanium ?-alloy during fracture in an oxygen-containing atmosphere

Cited by 6 publications

References 3 publications

Hot workability of burn resistant Ti–35V–15Cr–0.3Si–0.1C alloy

Hot workability of burn resistant Ti–35V–15Cr–0.3Si–0.1C alloy

Notice of Duplicate Publication

Prediction of Fracture Initiation in Hot Compression of Burn-Resistant Ti-35V-15Cr-0.3Si-0.1C Alloy

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