Modeling the structure formation during hot deforming the billets of the parts of gas-turbine engines made of heat-resistant nickel alloy

The results of finite-element and physical modeling of deformation heating and structure formation during high-temperature isothermal upset of a cylindrical billet according to various modes (continuous and fractional deformation) have been presented. The results of numerical modeling, which agree w...

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Published inJournal of machinery manufacture and reliability Vol. 45; no. 5; pp. 469 - 475
Main Authors Burlakov, I. A., Valitov, V. A., Ganeev, A. A., Zabel’yan, D. M., Morozov, S. V., Sukhorukov, R. Yu, Utyashev, F. Z.
Format Journal Article
LanguageEnglish
Published New York Allerton Press 01.07.2016
Springer Nature B.V
Subjects
Billets
Engineering
Finite element method
Gas turbine engines
Grain structure
Heat resistant alloys
Heating
High temperature
Machines
Manufacturing
New Technologies in Mechanical Engineering
Nickel base alloys
Processes
Ultrafines
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Summary:The results of finite-element and physical modeling of deformation heating and structure formation during high-temperature isothermal upset of a cylindrical billet according to various modes (continuous and fractional deformation) have been presented. The results of numerical modeling, which agree with the experimental modeling data, showed that, in order to minimize the deformation heating and formation of a homogeneous ultrafine-grain structure in bulk billets made of heat-resistant alloys, it is purposeful to perform the deformation fractionally (with a single degree no larger than 30–50%), which allows for the deformation rate and performance of post-deformation annealing. The formation of an ultrafine-grain structure in the billets made of nickel alloys (for example, EP742U) guarantees an increase in the quality of ready wares.
ISSN:1052-6188
1934-9394
DOI:10.3103/S105261881605006X