 | | Mechanics of Solids
A Journal of Russian Academy of Sciences | | Founded
in January 1966
Issued 6 times a year
Print ISSN 0025-6544
Online ISSN 1934-7936 |
Archive of Issues
| Total articles in the database: | | 12854 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8044
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| In English (Mech. Solids): | | 4810 |
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| A.I. Epishin and D.S. Lisovenko, "Negative Creep of Single Crystals of Nickel–Based Superalloys," Mech. Solids. 59 (3), 1321-1329 (2024) |
| Year |
2024 |
Volume |
59 |
Number |
3 |
Pages |
1321-1329 |
| DOI |
10.1134/S0025654424604452 |
| Title |
Negative Creep of Single Crystals of Nickel–Based Superalloys |
| Author(s) |
A.I. Epishin (Merzhanov Institute of Structural Macrokinetics and Materials Science RAS, Chernogolovka, Moscow Region, 142432 Russia, a.epishin2021@gmail.com)
D.S. Lisovenko (Ishlinsky Institute for Problems in Mechanics RAS, Moscow, 119526 Russia, lisovenk@ipmnet.ru) |
| Abstract |
Negative creep of single crystals of two nickel-based superalloys has been studied. This phenomenon was observed for both alloys at temperatures of 980–1000°C and low or zero loading stresses. It is assumed that the main reason for negative creep is the formation of short-range order of atoms in the highly alloyed lattice of the matrix γ-phase. Additional factors influencing the magnitude and anisotropy of negative creep deformation can be the relaxation of residual stresses: at the microscopic level - misfit stresses between the γ-matrix and the strengthening γ'-precipitates, and at the mesoscopic level - dendritic stresses between the dendritic axes and interdendritic regions. |
| Keywords |
single crystals of nickel-based superalloys, negative creep, ordering of the crystal structure, residual stresses |
| Received |
03 June 2024 | Revised |
24 June 2024 | Accepted |
28 June 2024 |
| Link to Fulltext |
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