Resource-Saving Technology of Manufacturing of Semifinished Products from Intermetallic γ-TiAl Alloys Intended for Aviation Engineering

Павленко, Д. В.; Belokon, Yuriy; Ткач, Д. В.

doi:10.1007/s11003-020-00386-1

Cited by 16 publications

(10 citation statements)

References 8 publications

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“…In works [10,11], the conditions of deformation are specified, which have a significant effect on the energy-power parameters of the process, the microstructure and mechanical properties of the finished product. In the MFP processes for assessing the stress-strain state, energy-power parameters, an important characteristic is the resistance to deformation [12].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Energy power parameter effect of hot rolling on the formation of the structure and properties of low-alloy steels

Sheyko

Matiukhin

Tsyganov

et al. 2021

EEJET

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The temperature and degree of hot deformation for steel 10HFTBch have been determined. This made it possible to ensure an increase in the mechanical properties of this steel, namely, the ultimate strength up to 540–560 MPa, as well as the relative elongation up to 25–29 %. As a result, it became possible to increase the service life of wheels with increased carrying capacity. This, in turn, will make it possible to increase the load of the transported cargo by motor vehicles several times. The mechanism of the influence of the energy-power parameters of rolling on the formation of the macro- and microstructure of a two-phase steel in the process of hot deformation is disclosed. The applied scheme provided an increase in the homogeneity of the structure of the developed steel, which saved the central part of the rolled section from overheating. It has been established that a decrease in the temperature of the end of deformation leads to a decrease in the size of the recrystallized austenite grain, and, consequently, to a refinement of the ferrite grain. Also an important factor in preventing the growth of ferrite grains in the upper part of the ferritic region is the abolition of cooling of the steel in coils. The recommended mode for multicomponent alloy steel 10HFTBch is as follows: the temperature of the end of rolling is 850 °C, the beginning of accelerated cooling is 750 °C, and the temperature of strip coiling into a coil is 600 °C. The basis for ensuring the increased strength of two-phase steels is the ratio and distribution of structural fractions – ferrite (initial and precipitated from austenite), as well as martensite. When hardened by such traditional "martensite formations" as manganese, the ability to control properties is limited. This is reflected in a narrow range of variation in the strength and ductility of the developed steel. The optimal combination of strength characteristics of plastic properties reduces the metal consumption of the product by 15–25 %.

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Energy power parameter effect of hot rolling on the formation of the structure and properties of low-alloy steels

Sheyko

Matiukhin

Tsyganov

et al. 2021

EEJET

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“…In this case, a promising, cost-saving technology for the preparation of semi-finished intermetallic γ-TiAl alloys for aircraft, in particular compressor blades, was a technology based on the methods of self-propagating high-temperature synthesis and subsequent SPD of the initial ingots [47]. Taking into account that this technology not only reduces the cost of manufacturing compressor blades, but also increases the level of their mechanical characteristics, assessing the possibility of their use in the design of engines for UAVs is important.…”

Section: Aluminium Alloys and Titanium Aluminidesmentioning

confidence: 99%

Advanced Materials and Technologies for Compressor Blades of Small Turbofan Engines

Павленко¹,

Dvirnyk²,

Przysowa³

2020

Preprint

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BACKGROUND: Manufacturing costs, along with operational performance, are among the major factors determining the selection of the propulsion system for unmanned aerial vehicles (UAVs), especially for aerial targets and cruise missiles. OBJECTIVES: In this paper, the design requirements and operating parameters of small turbofan engines for single-use and reusable UAVs are analysed to introduce alternative materials and technologies for manufacturing their compressor blades, such as sintered titanium, a new generation of aluminium and an alloy based on titanium aluminides. METHODS: To assess the influence of severe plastic deformation (SPD) on the hardening efficiency of the proposed materials, the alloys in the coarse-grained and submicrocrystalline states were studied. Changes in physical and mechanical properties of materials were taken into account. The thermodynamic analysis of the compressor was performed in a finite element analysis system (ANSYS) to determine the impact of gas pressure and temperature on the aerodynamic surfaces of compressor blades of all stages. RESULTS: Based on thermal and structural analysis, the stress and temperature maps on compressor blades and vanes were obtained, taking into account the physical and mechanical properties of advanced materials and technologies of their processing. The safety factors of the components were established based on the assessment of their stress-strength reliability. Thanks to nomograms, the possibility of using the new materials and the technologies was confirmed in view of the permissible operating temperature and safety factors of blades. CONCLUSIONS: The proposed alternative materials and production technologies for the compressor blades and vanes meet the design requirements of the turbofan at lower manufacturing costs.

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“…The purpose of the current work is to develop methods for producing relatively cheap titanium-based alloys (Ti-Al, Ti-Fe) by metallothermic reduction of titanium-containing oxide raw materials. The specific properties of titanium, and, above all, its high affinity for carbon, nitrogen and oxygen, make it an indispensable alloying element in the production of ferrous metals [2,3]. An even more significant improvement in mechanical properties is achieved when processing steel and cast iron with titanium together with other elements (Al, Mn, Si, B, Ca, etc.)…”

Section: Introductionmentioning

confidence: 99%

“…An even more significant improvement in mechanical properties is achieved when processing steel and cast iron with titanium together with other elements (Al, Mn, Si, B, Ca, etc.) [2,4]. Using flux-cored wire and powder injection into the melt is much more efficient than using titanium in the form of a sponge, which oxidizes on the surface of the steel melt.…”

Section: Introductionmentioning

confidence: 99%

“…Ti-Al alloys are widely used in alloying and modifying aluminum and its alloys [6], in production of valves in automobile engines [7,8], as heat-resistant, corrosion-resistant and wear-resistant coatings [9,10], and as a filler material for arc welding [11], since titanium aluminides are easily crushed to a powdery state. Titanium aluminides are also used for the manufacture of catalysts [12], getters and Raschig rings for rectification columns [13], as a reducing agent in metallothermic processes in the preparation of ligatures for titanium alloys [2], as additives to carbon-graphite materials to improve the crystal structure and so on. Pure titanium can be obtained from the Ti-Al alloy using subchloride technology [3].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Production of Titanium-Based Alloys by Metallothermic Reduction of Oxide Titanium-Containing Raw Materials

Проценко

Bondarenko²,

Kruglyak³

et al. 2021

METAL 2021 Conference Proeedings

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Resource-Saving Technology of Manufacturing of Semifinished Products from Intermetallic γ-TiAl Alloys Intended for Aviation Engineering

Cited by 16 publications

References 8 publications

Energy power parameter effect of hot rolling on the formation of the structure and properties of low-alloy steels

Energy power parameter effect of hot rolling on the formation of the structure and properties of low-alloy steels

Advanced Materials and Technologies for Compressor Blades of Small Turbofan Engines

Production of Titanium-Based Alloys by Metallothermic Reduction of Oxide Titanium-Containing Raw Materials

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