Vortices in Noncompact Blanks During Twist Extrusion

Павленко, Д. В.; Beygelzimer, Yan

doi:10.1007/s11106-016-9744-9

Cited by 11 publications

(5 citation statements)

References 6 publications

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“…Various SPD methods [20,21] are introduced to improve mechanical, physical, and functional properties of metals and alloys by forming their submicrocrystalline structure [22,23]. Twist extrusion (TE) is a variant of the simple shear deformation process that was introduced by Beygelzimer [24].…”

Section: Twist Extrusionmentioning

confidence: 99%

Advanced Materials and Technologies for Compressor Blades of Small Turbofan Engines

2020

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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. 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 alloys and titanium aluminides. To assess the influence of severe plastic deformation (SPD) on the hardening efficiency of the proposed materials, the alloys with the coarse-grained and submicrocrystalline structure were studied. Changes in the 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. 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 characteristics. Thanks to nomograms, the possibility of using the new materials in five compressor stages was confirmed in view of the permissible operating temperature and safety factor. The proposed alternative materials for compressor blades and vanes meet the design requirements of the turbofan at lower manufacturing costs.

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Section: Twist Extrusionmentioning

confidence: 99%

Advanced Materials and Technologies for Compressor Blades of Small Turbofan Engines

2020

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“…Various SPD methods [19,20] are introduced to improve mechanical, physical, and functional properties of metals and alloys by forming their submicrocrystalline structure [21,22]. Twist extrusion (TE) is a variant of the simple shear deformation process that was introduced by Beygelzimer [23].…”

Section: Twist Extrusionmentioning

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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“…Application of TE for compaction and consolidation of powder and porous materials was described earlier. [16,[102][103][104][105][106][107] The specific of the process, in this case, is the existence of a threshold level of back-pressure below, which compaction is not possible. The occurrence of such a threshold was explained qualitatively in terms of a model of a structurally non-uniform porous body.…”

Section: Mechanics Of Te Of Powder and Porous Materialsmentioning

confidence: 99%

“…[117] Details of the occurrence of vortex flows during TE of powders and porous materials during TE are given elsewhere. [107] 4. Structure, Texture, and Mechanical Properties Induced by TE…”

Section: Mechanics Of Te Of Powder and Porous Materialsmentioning

confidence: 99%

Twist Extrusion as a Potent Tool for Obtaining Advanced Engineering Materials: A Review

et al. 2017

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Twist extrusion (TE) is one of the most popular techniques of severe plastic deformation, aiming at imparting to a material a tailored microstructure and the associated property improvement. The article provides a survey of the literature on the mechanics of TE and the effect it has on the structure, texture, and the attendant properties of various materials, including metals and alloys, powder materials, and polymers. Special emphasis is placed on vortex flow during TE and its hitherto unexplored potential for producing micro-and macrostructures that promise superior properties of the materials. In particular, the possibility of creating novel hybrid materials with chiral inner architecture is demonstrated. The survey is concluded by a presentation of examples of practical applications of TE.

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Vortices in Noncompact Blanks During Twist Extrusion

Cited by 11 publications

References 6 publications

Advanced Materials and Technologies for Compressor Blades of Small Turbofan Engines

Advanced Materials and Technologies for Compressor Blades of Small Turbofan Engines

Advanced Materials and Technologies for Compressor Blades of Small Turbofan Engines

Twist Extrusion as a Potent Tool for Obtaining Advanced Engineering Materials: A Review

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