Microstructural and phase transformations in intermetalliс Ni3Al-based alloy after heat treatment and hot isostatic pressing

Оспенникова, О. Г.; Базылева, О. А.; Evgenov, A.G.; Аргинбаева, Э. Г.; Turenko, E.Yu.

doi:10.18577/2071-9140-2016-0-s1-36-43

Cited by 4 publications

(1 citation statement)

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“…T he gas turbine eng ine (GTE) industry is developing by increasing the operating temperature of gas at the turbine inlet, which imposes higher requirements for the quality of heat-resistant alloys, such as ZhS6U [1][2][3][4]. On the other hand, the presence of expensive alloying components in their composition requires reducing their cost.…”

Section: Introductionmentioning

confidence: 99%

Composition, structure, and properties of heat-resistant alloys samples made from powders obtained by electroerosion of waste nickel alloys in kerosene

Агеев¹,

Pereverzev²,

Khardikov³

et al. 2023

nfm

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In the work scientific and applied principles of conjugation of the technology of obtaining nickel powder materials from waste heat-resistant nickel alloy of ZhS6U (ЖС6У) grade by electroerosion dispersion and technology of their compacting by spark plasma sintering are implemented. The purpose of this work was to study the composition, structure, and properties of heat-resistant products made by spark plasma sintering of powders obtained by electrodispersion of ZhS6U alloy waste in illuminating kerosene. Electrodispersion of waste heat-resistant ZhS6U alloy was carried out in illuminating kerosene on a patented unit. The conducted studies have shown that the method of electroerosion dispersion of ZhS6U alloy waste in illuminating kerosene makes it possible to obtain heat-resistant nickel alloy powder with a uniform distribution of alloying elements. The obtained heat-resistant nickel powder was sintered in the SPS 25-10 "Thermal Technology" system (USA). The economic efficiency of this method is due to the use of waste ZhS6U grade alloy in a low-energy production technology of heat-resistant alloys. The implementation of the planned activities will solve the problem of recycling waste heat-resistant nickel alloys and their reuse in the manufacture of heat-resistant products. Based on the experimental studies aimed at investigating the composition, structure and properties of sintered samples of heat-resistant alloys, from electric erosion powders obtained in illuminating kerosene, a high efficiency of spark plasma sintering technology has been shown, which provides for suppression of grain growth, low porosity and high physical and mechanical properties with uniform heat distribution over the sample and a short working cycle time. It is noted that the heat resistant alloys made of particles of ZhS6U alloy dispersed by electric erosion and obtained by spark plasma sintering have the following characteristics: has fine grain structure in the absence of pores, cracks and other defects; the main elements in the alloys are: С, Аl, W, Cr, Fe, Mo, Ni, Nb, Co и Ti; main phases: Ni, Ni 17 W 3 , C 5 NbTi 2 and Al 0.9 Ni 4.22 ; porosity is 0.18%; average microhardness value is 460 HV 0.2 .

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Section: Introductionmentioning

confidence: 99%

Composition, structure, and properties of heat-resistant alloys samples made from powders obtained by electroerosion of waste nickel alloys in kerosene

Агеев¹,

Pereverzev²,

Khardikov³

et al. 2023

nfm

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Structure and properties of the composite material based on heat-resisting VKNA-4U alloy with oxide stiffening fillers, designed for additive manufacturing technologies of power fasteners for gas turbine engines (GTE)

Unchikova

Родионов

Golovlev

2019

IOP Conf. Ser.: Mater. Sci. Eng.

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The influence of the structure and concentration of the stiffening component on the physicomechanical properties of the heat-resisting intermetallic alloy VKNA-4U was investigated. The dependence of the strength properties of the alloy on the composition and ratio of the hardeners α-Al2O3, Y2O3, HfO2, ZrO2 was experimentally determined. Using scanning electron microscopy (SEM), it was found that when the alloy is reinforced with hafnium, yttrium and aluminum oxides, the dispersed hardener does not dissolve in the matrix. These compositions are considered as the most promising for the stiffening of VKNA-4U alloy. It is shown in this paper that the required content of the oxide reinforcing filler in the VKNA-4U matrix is 2%, at which a balance is reached between the maximum value of strength and ductility. In the future, VKNA-4U powder composition mechanically alloyed with β-Al2O3, Y2O3, HfO2 oxides can be used as a building material for additive synthesis technologies for power fasteners of gas turbine engines (GTE).

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Structure and Properties of the Intermetallic Alloy Based on Nickel Aluminide Microalloyed with Rare Earth Metals

Базылева

Аргинбаева

Shestakov

et al. 2019

Inorg. Mater. Appl. Res.

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Microstructural and phase transformations in intermetalliс Ni3Al-based alloy after heat treatment and hot isostatic pressing

Cited by 4 publications

References 0 publications

Composition, structure, and properties of heat-resistant alloys samples made from powders obtained by electroerosion of waste nickel alloys in kerosene

Composition, structure, and properties of heat-resistant alloys samples made from powders obtained by electroerosion of waste nickel alloys in kerosene

Structure and properties of the composite material based on heat-resisting VKNA-4U alloy with oxide stiffening fillers, designed for additive manufacturing technologies of power fasteners for gas turbine engines (GTE)

Structure and Properties of the Intermetallic Alloy Based on Nickel Aluminide Microalloyed with Rare Earth Metals

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