Damage and fracture of heat resistance steel under cyclic thermal loading

Ясній, Петро Володимирович; Maruschak, Pavlo; Бищак, Р. Т.; Hlad’o, V. B.; Pylypenko, Andrii

doi:10.1016/j.tafmec.2009.06.005

Cited by 21 publications

(17 citation statements)

References 6 publications

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“…Analysis of the dependence -p , Fig. 1(b), testifies to the fact that the structural adaptation of the material takes place due to the pore shape variation, and the deformation of metal sections is adjacent to pores [8].…”

Section: Discussionmentioning

confidence: 89%

Influence of in-service degradation on strain localization in steel of main gas pipelines

Maruschak¹,

Бищак²,

Panin³

et al. 2014

AIP Conference Proceedings

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Abstract. General regularities in the failure kinetics of steel of main gas pipelines (17GS) are established using the method of complete stress-strain curves, meanwhile in-service degradation of metals is taken into account. The influence of material degradation on material properties under static tensioning is considered using two independent approaches: the phenomenological model of damage accumulation in metals, and the fractographic analysis method. The accumulation of in-service damage is found to increase a degree of material opening and lead to partial "embrittlement" of the steel matrix due to the microdefects accumulation in the vicinity of metal cracking caused by hydrogenation.

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Section: Discussionmentioning

confidence: 89%

Influence of in-service degradation on strain localization in steel of main gas pipelines

Maruschak¹,

Бищак²,

Panin³

et al. 2014

AIP Conference Proceedings

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“…When analyzing these and previously obtained results of fractographic studies [24,25], we can assume that the quantitative parameters and the dimensions of dimples on the specimen fracture surface are a "reflection" of the nonuniform distribution of properties in the ensemble of point-type defects, followed by the formation of their conglomerates and the formation of pores [26]. With large degrees of deformation, these defects merge and dimples are formed after fracture, Figure 8.…”

Section: Algorithm For Optical-digital Image Analysismentioning

confidence: 84%

Impact of Dynamic Non-Equilibrium Processes on Fracture Mechanisms of High-Strength Titanium Alloy VT23

Maruschak

Konovalenko

Чаусов

et al. 2018

Metals

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The complex analysis of fractures of high-strength titanium alloy VT23 was performed at the macro- and microlevels, and the basic patterns of fracture under static stretching and after the realization of dynamic non-equilibrium processes caused by impact-oscillatory loading and subsequent static stretching were revealed. The morphological regularities in the formation of dimples of tearing and alloy stratification at the macro level were established with the help of 3-D profilometry. The micromechanisms of fracture were numerically characterized by the methods of optical-digital analysis, in particular, by highlighting the bound areas, which are the objects of interest—the dimples of tearing. The analysis of the surface of ductile tearing under different loading conditions at the microlevel was performed by analyzing the parameter distribution patterns of the dimples found on it.

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“…More detailed view of the main crack for specimen without treatment testifies for the fact that it is developed intensively not only on the surface, but into the bulk of the specimen as well. The main crack in the nanostructured specimen is less pronounced that could indicate that it develops mainly in the modified surface layer which hinders its spreading into the bulk of the material [15,16]. This may cause a reduction in growth rate under main fatigue crack propagation.…”

Section: Test On Cyclic Alternating Bending 12cr1movmentioning

confidence: 98%

Zr+ ION BEAM SURFACE IRRADIATION FOR IMPROVING FATIGUE DURABILITY OF 12Cr1MoV AND 30CrMnSiNi2 STRUCTURAL STEELS

Panin¹,

Власов²,

Сергеев³

et al. 2014

Acta Metall Slovaca

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A cyclic tension and alternating bending tests of 12Cr1MoV and 30CrMnSiNi2 steels specimens in as-supplied state and after surface nanostructuring by Zr+ ion beam have been carried out. Distinctions in formation of strain induced relief, as well as the cracking pattern of modified surface layer are illustrated by methods of optical microscopy and interferential profilometry. Changes to occur in subsurface layer are characterized by means of nanoindentation and fractography (scanning electron microscopy) of fracture surfaces. The description of differences of deformation behavior is carried out with use of the multilevel approach.

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Damage and fracture of heat resistance steel under cyclic thermal loading

Cited by 21 publications

References 6 publications

Influence of in-service degradation on strain localization in steel of main gas pipelines

Influence of in-service degradation on strain localization in steel of main gas pipelines

Impact of Dynamic Non-Equilibrium Processes on Fracture Mechanisms of High-Strength Titanium Alloy VT23

Zr+ ION BEAM SURFACE IRRADIATION FOR IMPROVING FATIGUE DURABILITY OF 12Cr1MoV AND 30CrMnSiNi2 STRUCTURAL STEELS

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