Modelling of temperature fields and stress-strain state of small 3D sample in its layer-by-layer forming

Makhnenko, O.V.; Milenin, A.S.; Velikoivanenko, E.A.; Pivtorak, N.I.; Kovalchuk, D.V.; Khvylya», Pjsc Spe «Chervona

doi:10.15407/tpwj2017.03.02

Cited by 16 publications

(5 citation statements)

References 10 publications

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“…The modern state of software and computer support makes it possible to study SSS under conditions of plasticity, taking into account the PMPs of materials, the nature of the load, and geometric dimensions, and their changes depending on temperature, etc. [5]. In [6], depending on the ratio of the yield strength σ Y(intl) of the interlayer and the base metal σ Y(bm) , a distinction is made between "soft" (σ Y(intl) <σ Y(bm) ) and "hard" (σ Y(intl) >σ Y(bm) ) interlayers.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Designing brazing filler metal for heat-resistant nickel alloys of new generation marine gas turbines

Kvasnytskyi,

Korzhyk,

Kvasnytskyi

et al. 2023

EEJET

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The object of research is the processes of the formation of brazed joints and the stressed state. The subject of research is structure, chemical composition, long-term high-temperature strength at a temperature of 900 °C, speed of high-temperature salt corrosion. Existing brazing filler metals have a high-temperature performance of 40–50 % of the performance of the SM93-VI and SM96-VI alloys. Despite this, brazing is the main technique of joining modern heat-resistant cast alloys. Therefore, the development of new brazing filler metals that ensure the formation of joints with increased long-term high-temperature strength is relevant. Ship gas turbine blades operate at a temperature of 900 °C. The purpose of the development of the new SBM-4 brazing filler metal is to achieve long-term high-temperature strength of brazed joints at a temperature of 900 °C at the level of 85–90 % of the strength of heat-resistant alloys SM93-VI and SM96-VI. A two-stage method was used in the development of SBM-4 brazing filler metal. At the first stage, the chemical composition of the brazing filler metal base was determined, taking into account the peculiarities of operating conditions of the blades of marine gas turbine engines and the achievements of materials science of heat-resistant alloys. At the second stage, the depressant and its necessary content were selected. Computer software was used to determine the distribution between the γ- and γ'-phases, taking into account the participation of each element in both dispersion and solid-solution strengthening. Rational limits of concentrations of alloying elements were determined. The criterion was the minimum susceptibility of brazing filler metal to the formation of brittle phases, taking into account the influence of chromium, rhenium, and tantalum concentrations on resistance to high-temperature salt corrosion and high-temperature performance. The long-term strength of SM93-VI and CM96-VI alloys brazed with SBM-4 brazing filler metal is 89–91 % of the strength of the base metal. Technologies of brazing and correction of casting defects have been introduced into production.

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Designing brazing filler metal for heat-resistant nickel alloys of new generation marine gas turbines

Kvasnytskyi,

Korzhyk,

Kvasnytskyi

et al. 2023

EEJET

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“…Molten metal is uniformly spread around the deposition point within limits of the molten pool to form smooth and accurate beads on the substrate along the movement of the deposition point ( Fig.4). Such an axisymmetric configuration of thermal fields and mass transfer greatly simplifies the mathematical modeling of the process, which is very important for improving the control of the technological process in order to obtain the predicted and specified material properties [8].…”

Section: Fig2 Process Configuration Of the Xbeammentioning

confidence: 99%

Microstructure and Properties of 3D Ti-6Al-4V Articles Produced with Advanced Co-axial Electron Beam & Wire Additive Manufacturing Technology

Kovalchuk¹,

Ивасишин

Savvakin

2020

MATEC Web Conf.

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Ti-6Al-4V articles were produced with advanced additive manufacturing technology of Direct Energy Deposition (DED) type using profile electron beam and wire as feedstock material. The key distinctive feature of this additive manufacturing process is the applying of the hollow conical electron beam generated by low-voltage (<20kV) gas-discharge EB gun for heating and melting of the substrate and co-axially fed wire. Such configuration ensures precisely controllable liquid metal transfer from the wire end to the substrate, specific temperature gradients at the fusion area and heat flow from liquid metal pool. Such conditions of heating, melting and cooling during 3D manufacturing processing provide the ability for controllable microstructure formation, including grain size and material texture. Influence of processing parameters and cooling conditions on crystallization, grain formation and intragrain structure of solidified material is discussed. Optimization of processing parameters allowed production of 3D Ti-6Al- 4V articles with isotropic microstructure and mechanical properties which met standard requirements for Ti-6Al-4V alloy.

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“…It is known [1,2,[14][15][16][17]] that the value and sign of parameter of doping disbalance DE determines a direction of the reactions in g-solid solution and tendency of high-temperature nickel alloys to precipitation of that or another type of TCP (topologically closepacked) phases. Thus, the alloys with large negative doping disbalance (DE < -0.04) have high probability to formation of heterotypical compounds, i.e.…”

Section: Scientific and Technicalmentioning

confidence: 99%

“…Such an axisymmetric configuration of heat flows and mass transfer greatly simplifies mathematical modeling of the process that is very important for improvement of technological operations control to obtain the specified material properties [14].…”

Section: Industrialmentioning

confidence: 99%

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Application of explosion welding for manufacture of trimetallic transition pieces of cryomodules of linear collider

Bryzgalin¹,

Pekar²,

Shlensky³

et al. 2017

The Paton Welding J.

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According to the algorithm of a developed comprehensive analytical solution method (CASM), a new cast high-temperature corrosion-resistant nickel alloy ZhS3LS-М has been developed for manufacture of all-cast nozzle appliances. The developed alloy is characterized by the high-temperature strength 975 40 s = 180-200 MPa at the level of the industrial non-corrosion-resistant alloy VZhL12E as well as technological weldability and corrosion resistance at the level of commercial weldable corrosion-resistant alloy ZhS3LS. 24 Ref., 11 Tables, 1 Figure.

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Modelling of temperature fields and stress-strain state of small 3D sample in its layer-by-layer forming

Cited by 16 publications

References 10 publications

Designing brazing filler metal for heat-resistant nickel alloys of new generation marine gas turbines

Designing brazing filler metal for heat-resistant nickel alloys of new generation marine gas turbines

Microstructure and Properties of 3D Ti-6Al-4V Articles Produced with Advanced Co-axial Electron Beam & Wire Additive Manufacturing Technology

Application of explosion welding for manufacture of trimetallic transition pieces of cryomodules of linear collider

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