Zobrazeno 1 - 10
of 11
pro vyhledávání: '"I. R. Dzioba"'
Autor:
I. R. Dzioba, T. Pała
Publikováno v:
Materials Science. 55:597-601
We study welded joints (WJ) of plates 6–8 mm in thickness obtained by the electric-arc and laser methods with various values of the energy of welding Ω. The strains and stresses in the stretched plates with welds are computed numerically by using
Publikováno v:
Materials Science. 48:239-246
We estimate the characteristics of strength, ductility, and static crack resistance of 12Kh1MF steel taken from the stretched, compressed, and neutral zones of a vertical bend and a straight part of the main steam pipeline of a thermal power plant af
Autor:
I. R. Dzioba
Publikováno v:
Materials Science. 47:662-669
By using the Ritchie–Knott–Rice criterion of local fracture, we analyze the conditions of initiation and propagation of microcracks in 13KhMF ferritic steel with various microstructures. The probability of fracture by transgranular cleavage for a
Autor:
I. R. Dzioba
Publikováno v:
Materials Science. 46:357-364
The influence of cooling rate in the process of thermal treatment on the formation of the microstructure of 13KhMF heat-resistant steel is investigated. The relationships between the microstructure, strength characteristics, crack-resistance characte
Autor:
I. R. Dzioba, O. T. Tsyrul’nyk
Publikováno v:
Materials Science. 45:817-825
We have evaluated the integrity of a rectilinear element of a welded pipe of a gas main after its operation for 40 years with the use of the FITNET procedures according to the Failure-Assessment-Diagram approach. We have determined the critical sizes
Publikováno v:
Materials Science. 41:791-804
The SINTAP approach is used for the evaluation of the serviceability of a welded joint after ∼19·104 h of its operation in the steam pipeline of a thermal power plant. The characteristics of strength and crack resistance required for calculations
Autor:
H. M. Nykyforchyn, Ya. D. Onyshchak, Oleksandra Student, S. M. Stepanyuk, I. R. Dzioba, A. D. Markov
Publikováno v:
Materials Science. 40:836-843
The mechanical properties of a welded joint of a steam pipeline of live steam after operation for ∼2 · 105 h are compared with the properties of a model (repair) welded joint. In the process of operation, the properties of the metal suffer degrada
Publikováno v:
Materials Science. 33:232-237
We demonstrate the efficiency of the method ofJ-integral for the analysis of the kinetics of structural degradation and accumulation of microdamages in the metal of steam pipelines after different periods of operation. The results of the tests carrie
Publikováno v:
Soviet Materials Science. 25:202-208
Publikováno v:
Soviet Materials Science. 25:331-334