Optimization of Blended-Elemental Powder-Based Titanium Alloy Extrusions for Aerospace Applications

El-Soudani, Sami M.; Yu, Kuang-O; Crist, Ernie; Sun, Fusheng; Campbell, Michael B.; Esposito, Tony S.; Phillips, Joshua J.; Moxson, Vladimir; Duz, Vlad

doi:10.1007/s11661-012-1437-5

Cited by 40 publications

(11 citation statements)

References 4 publications

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“…On account of its low density, high strength, high specific strength, Non-magnetic, superior corrosion resistance, and excellent biocompatibility, titanium (Ti) alloy as an important structural material, can be applied in aerospace, marine, petrochemical, and biomedical fields [1,2]. However, high production cost of traditional ingot metallurgy (IM) Ti alloy has limited its widespread application, which is mainly attributed to its high chemical activity, poor hot working performance, and low material utilisation [3,4]. Powder metallurgy (PM) as a near-net shape technology has been paid much attention to process Ti alloy with uniform microstructure, no composition segregation, and isotropic properties [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

High-temperature plastic deformation behaviour of powder metallurgy Ti6Al4V alloy prepared from HDH powder

Wang

Yang

et al. 2021

Powder Metallurgy

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Powder metallurgy (PM) Ti6Al4V alloy was prepared from HDH alloy powder by vacuum pressureless sintering. To study its high-temperature deformation behaviour, isothermal compression testing was carried out with temperature range of 900-1050°C, strain rate range of 0.01-10 s −1 , and compression ratio of 60%. Based on the hot deformation data, the corresponding constitutive equation and hot processing map were clarified. The deformation activation energy for PM Ti6Al4V alloy was 606.5 kJ mol −1 . Its deformation instability zone was very small, locating in the range of 960∼990°C with strain rate >1 s −1 . PM Ti6Al4V alloy had large hot working window and good hot workability. The ideal hot processing domain was at 970-990°C and 0.05-0.01 s −1 . Besides, the domain at 1000-1040°C and 1-10 s −1 was also suitable for hot processing. This study proposed an effective guidance for the hot deformation (e.g. forging, extrusion, rolling) of PM Ti6Al4V alloy.

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Section: Introductionmentioning

confidence: 99%

High-temperature plastic deformation behaviour of powder metallurgy Ti6Al4V alloy prepared from HDH powder

Wang

Yang

et al. 2021

Powder Metallurgy

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“…They are implemented both by the scientific institutes, where the results of the investigations were published for example in References 26, 28 through 31, and by research and development units cooperating with commercial companies, dealing with the design and production of parts obtained from these materials. [2,5,32,33] Currently, many of the metal-forming processes, such as multi-axis forging, drawing or rolling, can be carried out with large total strains, obtained as a result of the application of the many successive single deformations. Hot forming of titanium alloys under conditions of accumulation of deformation allows not only for a significant change in the shape of the feedstock, but also for deep processing leading to the refinement of the microstructure and ultimately to obtaining specific, usually anisotropic properties of the products.…”

Section: Introductionmentioning

confidence: 99%

Hot Processing of Powder Metallurgy and Wrought Ti-6Al-4V Alloy with Large Total Deformation: Physical Modeling and Verification by Rolling

Wojtaszek

Korpała

Śleboda

et al. 2020

Metall Mater Trans A

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The influence of the total deformation amount on the microstructure and selected properties of Ti-6Al-4V alloy was determined in this study. Multi-axis compression tests on the MaxStrain module were performed to obtain large strains. Starting material for the research was obtained by the powder metallurgy (PM) route. Plastically processed cast alloy of the same chemical composition as PM alloy was also tested as reference material. The tests were performed with the cooling of samples between successive deformation stages, which allowed for the simulation of the temperature drop occurring during industrial processes. The multi-stage deformation ability of PM Ti-6Al-4V alloy without decohesion was confirmed. It has also been shown that the application of increasing total strain at a controlled temperature changes the samples resulting in the refinement of the microstructure and leads to the fragmentation of lamellae. The results obtained from MaxStrain tests were verified by multi-stage hot-rolling tests. Defect-free products were obtained, whose good quality was confirmed by the microstructural observations as well as by the investigations of their properties. The results of the rolling tests confirmed the possibility of hot processing of Ti-6Al-4V alloy compacts in industrial conditions, applying large total strain.

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“…Residual porosity in PM products of Ti is another possible problem, which in some cases can adversely affect the mechanical properties and performance of the structural components. Post-sintering, hot rolling or pressing are some customary ways of reducing the porosity of Ti-based materials to an acceptable level, even near zero if it is needed [3]. It was shown, however, that hot rolling could not be successfully used on multi-layered structures due to the disparity in the plastic flows of different layers [4].…”

Section: Introductionmentioning

confidence: 99%

Diffusion bonding of TiC or TiB reinforced Ti–6Al–4V matrix composites to conventional Ti–6Al–4V alloy

Prikhodko

Savvakin

Markovsky

et al. 2020

Science and Technology of Welding and Joining

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Optimization of Blended-Elemental Powder-Based Titanium Alloy Extrusions for Aerospace Applications

Cited by 40 publications

References 4 publications

High-temperature plastic deformation behaviour of powder metallurgy Ti6Al4V alloy prepared from HDH powder

High-temperature plastic deformation behaviour of powder metallurgy Ti6Al4V alloy prepared from HDH powder

Hot Processing of Powder Metallurgy and Wrought Ti-6Al-4V Alloy with Large Total Deformation: Physical Modeling and Verification by Rolling

Diffusion bonding of TiC or TiB reinforced Ti–6Al–4V matrix composites to conventional Ti–6Al–4V alloy

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