 | | 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: | | 11223 |
| In Russian (Изв. РАН. МТТ): | | 8011
|
| In English (Mech. Solids): | | 3212 |
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| << Previous article | Volume 53, Issue 6 / 2018 | Next article >> |
| R.A. Arutyunyan, "High-Temperature Creep and Long-Term Strength of Metallic Materials," Mech. Solids. 53 (6), 685-690 (2018) |
| Year |
2018 |
Volume |
53 |
Number |
6 |
Pages |
685-690 |
| DOI |
10.3103/S0025654418060092 |
| Title |
High-Temperature Creep and Long-Term Strength of Metallic Materials |
| Author(s) |
R.A. Arutyunyan (St. Petersburg State University, Universitetskaya nab. 7-9, St. Petersburg, 199034 Russia, r.arutyunyan@spbu.ru) |
| Abstract |
The article consideres the loosening of metallic materials and an irreversible change in density during high-temperature creep is considered as damage parameter. On the basis of this parameter and taking into account the law of mass conservation, interrelated equations for creep deformation and damage parameter are proposed. Approximate and exact solutions for creep deformation and continuity parameter are obtained and criteria for long-term strength are formulated. The corresponding theoretical curves are constructed. It is shown that the theoretical relationships for the damage parameter describe the experimental results on the density change during the high-temperature creep of various metallic materials well. |
| Keywords |
high-temperature creep, thermal brittleness, incompressibility, porosity, density, integrity parameter (damage), compressibility, brittle fracture criterion |
| References |
| 1. | L.M. Kachanov,
"On the Time of Fracture under Creeping Conditions," Izv. Akad. Nauk SSSR. OTN,
No. 8, 26-31 (1958). |
| 2. | Yu.N. Rabotnov,
"On Mechanism of Long Fracture," %О механизме длительного разрушения About the mechanism of long-term destruction
in Problems of Strength of Materials and Structures
(Izd-vo AN SSSR, 1959), pp. 5-7 [in Russian]. |
| 3. | Yu.N. Rabotnov,
"On Fracture due Creep," %About creep destruction
Zh. Prikl. Mekh. Tekhn. Fiz., No. 2, 113-123 (1963). |
| 4. | Yu.N. Rabotnov,
Creep of Structural Elements
(Nauka, Moscow, 1966) [in Russian]. |
| 5. | A.M. Lokoshchenko,
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[J. Appl. Math. Mech. (Engl. Transl.) 29 (4), 811-819 (1965)]. |
| 7. | R.A. Arutyunyan,
The Problem of Deformational Aging and Long-Term Destruction in the Mechanics of Materials
(Izd-vo StPbGU, St. Petersburg, 2004) [in Russian]. |
| 8. | R.A. Arutyunyan,
"High-Temperature Embrittlement and Long-Term Strength of Metallic Materials,"
Izv. Akad. Nauk. Mekh. Tv. Tela,
No. 2, 96-105 (2015)
[Mech. Sol. (Engl. Transl.) 50 (2), 191-197 (2015)]. |
| 9. | R.T. Ratcliffe and G.W. Greenwood,
"The Mechanics of Cavitation in Magnesium during Creep,"
Phil. Mag. 12 (115), 59-69 (1965). |
| 10. | R.C. Boethner and W.D. Robertson,
"A Study of Growth of Voids in Copper during the Creep Process by Measurement of the Accompanying Change in Density,"
Trans. of the Metallurg. Society of AIME
221 (3), 613-622 (1961). |
| 11. | C. Beghi, C. Geel, and G. Piatti,
"Density Measurements after Tensile and Creep Tests on Pure and Slightly Oxidized Aluminium,"
J. Mat. Sci.
5 (4), 331-334 (1970). |
| 12. | L. Brathe,
"Macroscopic Measurements of Creep Damage in Metals,"
Scand. J. Metal.
7 (5), 199-203 (1978). |
| 13. | D.A. Woodford,
"Density Changes during Creep in Nickel,"
Metal. Sci. J.
3 (11), 234-240 (1969). |
| 14. | P. Bowring, P.W. Davies, and B. Wilshire,
"The Strain Dependence of Density Changes during Creep,"
Metal. Sci. J. 2 (9), 168-171 (1968). |
| 15. | V.I. Kumanin, L.A. Kovaleva, and S.V. Alekseeva,
Creep Metal Durability
(Metallurgia, Moscow, 1988) [in Russian]. |
| 16. | R.N. Haward,
"The Extension and Rupture of Cellulose Acetate and Celluloid,"
Trans. Farad. Soc.
38, 394-400 (1942). |
| 17. | M.N. Bokshitsky,
Long-Term Durability of Polymers
(Himiya, Moscow, 1978) [in Russian]. |
|
| Received |
21 January 2017 |
| Link to Fulltext |
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