Аbout  the deformation ability of overlay metal of nickel-base difficult to weld high temperature strength  alloys with γ׳-phase strengthening high content

Yarovytsyn, O. V.

doi:10.15407/mom2020.02.038

Cited by 3 publications

(1 citation statement)

References 5 publications

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“…Recent publications [26][27] have shown that the destructive conditions under high-temperature 1000 °С tensile strength test on ZhS32 and ZhS6K MPWD-deposited metal are characterized with ultimate tensile strength σ в = 345-385 MPa and critical deformation ε = 0.1-0.65%. The longterm practice of GTE parts refurbishment has shown that these conditions can be quite easily exceeded with an increase in the heat amount transferred into the work piece by 30-50% of optimal range of MPWD process technological parameters, thus substantially increasing the amount of defective parts during large-scale repair.…”

Section: Table 1 Alteration Patterns Of Total Work Piece Heat Input P...mentioning

confidence: 99%

Expanding the Technological Possibilities of Multilayer Micro-Plasma Powder Deposition Process by Optimizing the Quality and Composition of Process Gases

CHERVIAKOV,

YAROVYTSYN,

KHRUSHCHOV

2023

Sci. innov.

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Introduction. Mastering the micro-plasma powder deposition (MPWD) technology for refurbishing parts of nickel-based super alloy aircraft gas turbine engine (GTE) has been remaining a relevant task of the Ukrainian air craft industry for, at least, 15 last years.Problem Statement. MPWD or subsequent heat treatment of GTE parts made of nickel-based super alloy after long-term operating hours, with high γ'-phase content, might reveal increased cracking susceptibility. The search for ways to optimize the welding deposition technology has shown the necessity to scrutinize the positive technological effect of rational choice of the quality and content of process (shielding, plasma and transporting) gases.Purpose. To study the effect of process gas content on the heat source parameters, the conditions of the formation of deposited metal and its quality.Material and Methods. Comparative study of the micro-plasma (PPS04 plasmatron, UPNS-304M welding machine) and TIG (VSVU-315 power source) arc heat parameters depending on welding current and process gas has been conducted by the conventional flow calorimetry technology. Comparative estimation of the total work piece heat input parameters has been made based on the previously developed methodology with registering the welding current parameters based on m-DAQ14 analog-to-digital converter (ADC).Results. The comparative research during MPWD of sample parts has shown that the content and quality of process gases can significantly (up to 2.5 times) affect the amount of heat transferred into the work piece and, respectively, the possibility to provide the technological strength of “base-deposited metal” welded joint.Conclusions. The industrial MPWD process optimization by the criteria of work piece heat input parameters, technological strength of “base-deposited metal” welded joint and filler powder consumption,by means of increasing argon (plasma and transporting gas) quality by other gases impurities content and switch to 90% Ar + 10% Н2 argonhydrogen mixture shielding gas has been established to be promising and expedient way to solve the problem.

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Section: Table 1 Alteration Patterns Of Total Work Piece Heat Input P...mentioning

confidence: 99%

Expanding the Technological Possibilities of Multilayer Micro-Plasma Powder Deposition Process by Optimizing the Quality and Composition of Process Gases

CHERVIAKOV,

YAROVYTSYN,

KHRUSHCHOV

2023

Sci. innov.

Self Cite

View full text Add to dashboard Cite

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Formation of Criteria for Evaluating the Suitability of the Use of Filler Materials Made of Nickel Alloys in Additive Technologies of 3$D$ Surfacing

Yarovytsyn,

Cherv’yakov,

Volosatov

et al. 2024

Metallofiz. Noveishie Tekhnol.

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High-temperature creep testing of difficult-to-weld nickel-based superalloy samples with micro-plasma powder deposition

Yarovytsyn,

Chervyakov,

Nakonechnyi

et al. 2024

Avtom. svarka (Kiev)

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Аbout the deformation ability of overlay metal of nickel-base difficult to weld high temperature strength alloys with γ׳-phase strengthening high content

Cited by 3 publications

References 5 publications

Expanding the Technological Possibilities of Multilayer Micro-Plasma Powder Deposition Process by Optimizing the Quality and Composition of Process Gases

Expanding the Technological Possibilities of Multilayer Micro-Plasma Powder Deposition Process by Optimizing the Quality and Composition of Process Gases

Formation of Criteria for Evaluating the Suitability of the Use of Filler Materials Made of Nickel Alloys in Additive Technologies of 3$D$ Surfacing

High-temperature creep testing of difficult-to-weld nickel-based superalloy samples with micro-plasma powder deposition

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