DOI: 10.18577/2071-9140-2014-0-s4-45-49

UDC: 669.14.018:539.43

V.F. Terentyev¹, A.K. Slizov², D.V. Prosvirnin¹, V.P. Sirotinkin¹, A.A. Ashmarin¹

Change of the phase composition of high-alloy trip steel by static and cyclic deformation

In this paper was studied change of the phase composition of high-alloy trip steel by static and cyclic deformation. Method of obtainment relation of austenite content in trip steel from speed deformation by tensile and change martensite content from maximum cyclic stress was offer. Analysis of this relations and their explanation by trip effect were carried out.

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10.

DOI: 10.18577/2071-9140-2014-0-s4-50-54

UDC: 620.178.6:678.8

N.O. Yakovlev¹

Study and description of relaxation behavior of polymers (review)

The features of the «elastic - rubber-like elastic» behavior of polymethylmethacrylate organic glass with linear (glass CO-120, glass transition temperature 120°C) and rarely cross-linked (glass ВОС-2, 148°C) structures. For organic glass of CO-120 grade boundaries of relaxation behavior were defined and the approach to a description of relaxation behavior of the polymer in the «elastic - rubber-like elastic» behavior using multi-parameter asymmetric logistic function was proposed.

Keywords: elastic ‒ rubber-like elastic strain region, rubber-like elastic strain, relaxation, organic glass, polymethylmethacrylate, equilibrium deformation curve

Reference List

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12. Mekalina I.V., Sentjurin E.G., Klimova S.F., Bogatov V.A. Novye «serebrostojkie» organicheskie stekla [New «serebrostoykie» organic glass] //Aviacionnye materialy i tehnologii. 2012. №4. S. 45–48.
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15. Kablov E.N., Starcev O.V., Krotov A.S., Kirillov V.N. Klimaticheskoe starenie kompozicionnyh materialov aviacionnogo naznachenija. III. Znachimye faktory starenija [Climatic aging of composite materials aviation applications. III. Significant factors of aging] //Deformacija i razrushenie materialov. 2011. № 1. S. 34-40.
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17. Jakovlev N.O., Erasov V.S., Sentjurin E.G., Haritonov G.M. Kompleks metodik ocenki fiziko-mehanicheskih harakteristik organicheskih stekol s uchetom vlijanija vysokojelasticheskoj deformacii [Complex valuation techniques of physical and mechanical properties of organic glasses with the influence of rubbery deformation] //Vse materialy. Jenciklopedicheskij spravochnik. 2013. №10. S. 6–11.
18. Arzhakov M.S., Arzhakov S.A., Zhirnov A.E., Lukovkin G.M. Universal'nye sootnoshenija, opisyvajushhie deformaciju polimernyh stekol [Universal relations describing the deformation of polymer glasses] //Materialovedenie. 2010. №7. S. 53–58.
19. Jakovlev N.O. Ocenka granic oblasti relaksacionnogo povedenija organicheskogo stekla na osnove polimetilmetakrilata [Assessment boundaries of the region of the relaxation behavior of organic glass on the basis of polymethylmethacrylate] //Plasticheskie massy. 2014 (v pechati).
20. Jakovlev N.O. Opisanie relaksacionnogo povedenija organicheskogo stekla na osnove polimetilmetakrilata [Description of the relaxation behavior of organic glasses based on polymerase-methacrylate] //Zavodskaja laboratorija. Diagnostika materialov. 2015 (v pechati).

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DOI: 10.18577/2071-9140-2014-0-s4-55-59

UDC: 620.191.33

V.S. Erasov¹, O.V. Mitrakov², S.M. Shvets³, A.V. Lavrov¹

Growing of the initial crack at tests of fracture toughness (crack resistance)

The usage of modern electromechanical high-frequency pulsators for growing of the initial crack at testing of fracture toughness (crack resistance) was proposed. A technique for determining the initial crack of a given length by the change of the resonance frequency of high-frequency electromechanical pulsator is described. Experimental data on growing cracks of the initial length for compact specimens made from VT23M titanium alloy with chevron notch by the use of high-frequency electromechanical pulsator Amsler 100 НFP 5100 (Zwick/Roell, Germany) for the subsequent tests to determine the critical stress intensity factor (K _{1 c} ) are given.

Keywords: growing of the initial crack, electromechanical high-frequency pulsator, change in resonant frequency

Reference List

1. Erasov V.S. Fiziko-mehanicheskie harakteristiki kak osnovnye integral'nye pokazateli kachestva aviacionnyh konstrukcionnyh materialov [Physical and mechanical properties as the main indicators of the quality of aviation integral structural materials]: Metod. posobie. M.: VIAM. 2011. 16 s.
2. Erasov V.S., Grinevich A.V., Senik V.Ja., Konovalov V.V., Trunin Ju.P., Nesterenko G.I. Raschetnye znachenija harakteristik prochnosti aviacionnyh materialov [The calculated values of the strength characteristics of aircraft materials] //Aviacionnye materialy i tehnologii. 2012. №2. S. 14–16.
3. Erasov V.S., Jakovlev N.O., Nuzhnyj G.A. Kvalifikacionnye ispytanija i issledovanija prochnosti aviacionnyh materialov [Qualification testing and research strength of aircraft materials] //Aviacionnye materialy i tehnologii. 2012. №S. S. 440–448.
4. Erasov V.S., Nuzhnyj G.A. Zhestkij cikl nagruzhenija pri ustalostnyh ispytanijah [Hard loading cycle fatigue at tests] //Aviacionnye materialy i tehnologii. 2011. №4. S. 35–40.
5. Kablov E.N., Grashhenkov D.V., Erasov V.S., Anchevskij I.Je., Il'in V.V., Val'ter R.S. Stend dlja ispytanija na klimaticheskoj stancii GCKI krupnogabaritnyh konstrukcij iz PKM [Stand for testing climate station GTSKI large-scale structures of the FRP] /V sb. dokl. IX Mezhdunarod. nauch. konf. po gidroaviacii «Gidroaviasalon–2012». 2012. S. 122–123.
6. Hohlatova L.B., Kolobnev N.I., Antipov V.V., Karimova S.A., Rudakov A.G., Oglodkov M.S. Vlijanie korrozionnoj sredy na skorost' rosta treshhiny ustalosti v aljuminievyh splavah [The influence of the corrosive environment on the rate of growth of fatigue cracks in the aluminum alloys] //Aviacionnye materialy i tehnologii. 2011. №1. S. 16–20.
7. Kablov E.N., Grinevich A.V., Erasov V.S. Harakteristiki prochnosti metallicheskih aviacionnyh materialov i ih raschetnye znachenija [Characteristics of the strength of metal aircraft materials and their calculated values] /V sb. 75 let. Aviacionnye materialy. Izbrannye trudy «VIAM» 1932–2007. M.: VIAM. 2007. S. 370–379.
8. Erasov V.S., Nuzhnyj G.A., Grinevich A.V., Terehin A.L. Treshhinostojkost' aviacionnyh materialov v processe ispytanija na ustalost' [Fracture toughness of aircraft materials in the course of the fatigue test] //Trudy VIAM. 2013. №10. St. 06 (viam-works.ru).
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11. Kablov E.N. Materialy i himicheskie tehnologii dlja aviacionnoj tehniki [Materials and chemical technologies for aircraft equipment] //Vestnik Rossijskoj akademii nauk. 2012. T. 82. №6. S. 520–530.
12. GOST 25.506–85 Metody mehanicheskih ispytanij metallov. Opredelenie harakteristik treshhinostojkosti (vjazkosti razrushenija) pri staticheskom nagruzhenii [Methods of mechanical testing of metals. Characterisation of crack resistance (fracture toughness) under static loading].
13. OST 1.92127–90 Metally. Metod opredelenija skorosti rosta ustalostnoj treshhiny pri ispytanii s postojannoj amplitudoj nagruzki [Metals. Method for determining the rate of growth of fatigue cracks in the test with constant amplitude load].
14. OST 1.92122–88 Metally. Metod opredelenija krivoj soprotivlenija rasprostraneniju treshhiny pri staticheskom nagruzhenii (R-krivoj) obshivochnyh materialov pri ploskom naprjazhennom sostojanii [Metals. Method for determination of the resistance curve crack propagation under static loading (R-curve) cladding materials in plane stress].
15. OST 1.90356–84 Metally. Metod opredelenija staticheskoj treshhinostojkosti (vjazkosti razrushenija) obshivochnyh materialov pri ploskom naprjazhennom sostojanii [Metals. Method for determination of static fracture (fracture toughness) cladding materials in plane stress].
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DOI: 10.18577/2071-9140-2014-0-s4-60-64

UDC: 620.186.4

A.V. Lavrov¹, V.S. Erasov¹

About possibility of analysis of fracture failures using parameters of the secondary cracks set (review)

The mechanisms of fatigue crack growth assisted with secondary cracks formed in the plastic zone at the tip of the fatigue macro-crack under cyclic loading were considered. The data from various literary sources describing the patterns of secondary fatigue cracks for various materials based on studies of the fracture surface and the state of plastic zones under the fracture surface and ahead of the macro-crack tip are given. The possibility to use parameters of the set of secondary cracks both outgoing and not outgoing on the fracture surface for investigation of operational fatigue damages was confirmed.

Keywords: fatigue crack, fatigue fracture, fractography, metallographic analysis, secondary cracks.

Reference List

1. Kablov E.N. Materialy i himicheskie tehnologii dlja aviacionnoj tehniki [Materials and chemical technologies for aircraft equipment] //Vestnik Rossijskoj akademii nauk. 2012. T. 82. №6. S. 520–530.
2. Kablov E.N. Shestoj tehnologicheskij uklad [Sixth technological way] //Nauka i zhizn'. 2010. №4. S. 2–7.
3. Kablov E.N. Strategicheskie napravlenija razvitija materialov i tehnologij ih pererabotki na period do 2030 goda [Strategic directions of development of materials and technologies to process them for the period up to 2030] //Aviacionnye materialy i tehnologii. 2012. №S. S. 7–17.
4. Erasov V.S., Grinevich A.V., Senik V.Ja., Konovalov V.V., Trunin Ju.P., Nesterenko G.I. Raschetnye znachenija harakteristik prochnosti aviacionnyh materialov [The calculated values of the strength characteristics of aircraft materials] //Aviacionnye materialy i tehnologii. 2012. №2. S. 14–16.
5. Erasov V.S., Jakovlev N.O., Nuzhnyj G.A. Kvalifikacionnye ispytanija i issledovanija prochnosti aviacionnyh materialov [Qualification testing and research strength of aircraft materials] //Aviacionnye materialy i tehnologii. 2012. №S. S. 440–448.
6. Erasov V.S. Fiziko-mehanicheskie harakteristiki kak osnovnye integral'nye pokazateli kachestva aviacionnyh konstrukcionnyh materialov [Physical and mechanical properties as the main indicators of the quality of aviation integral structural materials]: Metodicheskoe posobie. M.: VIAM. 2011. 16 s.
7. Hohlatova L.B., Kolobnev N.I., Antipov V.V., Karimova S.A., Rudakov A.G., Oglodkov M.S. Vlijanie korrozionnoj sredy na skorost' rosta treshhiny ustalosti v aljuminievyh splavah [The influence of the corrosive environment on the rate of growth of fatigue cracks in the aluminum alloys] //Aviacionnye materialy i tehnologii. 2011. №1. S. 16–20.
8. Kablov E.N., Grinevich A.V., Erasov V.S. Harakteristiki prochnosti metallicheskih aviacionnyh materialov i ih raschetnye znachenija [Characteristics of the strength of metal aircraft materials and their calculated values] /V sb. 75 let. Aviacionnye materialy. Izbrannye trudy «VIAM» 1932–2007. M.: VIAM. 2007. S. 370–379.
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13.

DOI: 10.18577/2071-9140-2014-0-s4-65-69

UDC: 669:620.191/193

I.P. Zhegina¹, V.B. Grigorenko², L.V. Morozova², M.A. Fomina²

Research of state changes of surface layers in aluminum - lithium alloys 1441 and V-1469 at a complex influence of stresses and corrosive environment

A combined influence of tensile stresses and water-salt solution on the surface state of structural aluminum-lithium alloys has been studied. It was found that 1441 and B-1469 alloys are susceptible to different types of pitting corrosion, but in case of simultaneous exposure to stresses and corrosive environment a brittle intercrystalline fracture was observed.

Keywords: tensile, stress-corrosion cracking, fracture, light alloys, pre-failure

Reference List

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DOI: 10.18577/2071-9140-2014-0-s4-70-86

UDC: 620.165.79

A.N. Lutsenko¹, I.N. Odintsev², A.V. Grinevich¹, P.B. Severov², T.P. Plugatar’²

Study of material deformation by optical-correlation methods

Contactless optical methods of displacement fields determination on the surface of bodies were considered: correlation of digital images (CDI) and electron digital speckle-interferometry (EDSI). By these methods a strained state of objects is studied, not in separate points, but in a continual format. CDI method may be used for a strained state analysis of an object in 2D- and 3D-format. Specifically, it may be used also in virtual optical linear tensodetector mode. This method allows to trace displacements of the same physical points on body surface before and after its strain. EDSI method belongs to the class of coherent and optical methods of experimental mechanics and is more exact tool for visualization and a numerical description of displacement fields. Examples of these methods application for study of residual strength fields and displacement (deformation) fields near of a hole-concentrator in the sample are given.

Keywords: deformation, residual strength, optical methods, displacement fields, numerical analysis, correlation, digital image

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15.

DOI: 10.18577/2071-9140-2014-0-s4-87-92

UDC: 620.178.3

M.S. Belyaev¹, V.F. Terentev², M.A. Gorbovets³, M.M. Bakradze³, M.A. Goldberg⁴

Low-cycle fatigue for a given deformation and parameters of elastic-plastic deformation of superalloy VZh175

LCF behavior of Ni-base superalloy VZh175 was investigated. Controlled parameters were total deformation, cycle ratio R=0 and stain amplitude ε _a=0,4-0,6% at test temperature of 20 and 650°С. Parameters of elastic-plastic strain at the chosen conditions were observed in this paper. Processes of crack nucleation and growth were analyzed in this paper.

Keywords: low-cycle fatigue (LCF), curves of cyclic stress alteration, elastic-plastic hysteresis, Ni-base superalloy VZh175, investigation of fracture surface

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16.

DOI: 10.18577/2071-9140-2014-0-s4-93-102

UDC: 620.178.35:669.715

A.V. Grinevich¹, Yu.S. Rumyantsev², L.V. Morozova¹, A.L. Terekhin³

Study of fatigue life of 1163-T and V95o.ch.-T2 aluminum alloys after surface hardening

Study of fatigue life of 1163-T and V95o.ch.-T2 aluminum structural alloys specimens of hour-glass type was performed after a surface hardening of different kinds: shock-vibration hardening with steel balls, shock-vibration abrasive machining with ceramic chips and hardening with steel shots. The shock-vibration abrasive surface machining with ceramic chips results in growing of fatigue life at relatively high dispersion of this characteristic that obviously was initiated by defects caused by abrasive particles. The shock-vibration hardening with steel balls gives more stable results and is characterized by the less dispersion of fatigue life obtained values. The chosen regimes of hardening with steel shots didn’t lead to a substantial increase of V95o.ch.-T2 alloy fatigue life meanings and are characterized by a dispersion of this characteristic values for 1163-T alloy.

Keywords: surface hardening, aluminum alloys, fatigue life, shock-vibration hardening

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DOI: 10.18577/2071-9140-2014-0-s4-103-108

UDC: 669.018.44:669.246

M.S. Belyaev¹, M.A. Gorbovets²

About discontinuity of LCF diagram in S-N coordinates for Ni-based superalloy

The paper is focused on investigation of LCF resistance of wrought Ni-based superalloy. An influence of such factors as test temperature, number of cycles and stress concentration sensitivity on LCF resistance has been studied. Fatigue curve of the above alloy is approximated by straight line in lgσ - lg N diagram for unnotched specimens and by discontinuous curve - for notched specimens at 650°C and number of cycles within 10 ³-5·10 ⁶. It was based on math statistics analysis of test results.

Keywords: low cycle fatigue (LCF), processing of test results, stress concentration sensitivity, number of cycles, wrought Ni-based superalloy

Reference List

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DOI: 10.18577/2071-9140-2014-0-s4-109-117

UDC: 678.8:669.018.95

E.I. Oreshko¹, V.S. Erasov¹, N.Yu. Podjivotov²

Arrangement of high-modular layers in a multilayer hybrid plate for its greatest resistance to stability loss

The article touches upon the problem of stability calculations of multilayer hybrid plates. This item is of particular interest under designing of modern aircraft glider from hybrid materials. When structural members (wing panel, aircraft skin, etc.) work, a loss of bearing capacity may occur not only because of strength exhaustion, but also by the reason that the member will not preserve the form that was given by a designer, will lose its operational properties and transform into a pre-emergency or emergency condition. Therefore, when designing of structure the designer should seek ways to increase a critical force when buckling. A finite element method for calculation of stability of multilayer hybrid plates is applied in the work. Analysis of the results of calculations allowed to determine factors affecting a stability of the plates. The revealed regularities allow to compare a stability of multilayer hybrid plates without preliminary calculations.

Keywords: stability calculation, multilayer plate, hybrid material, finite element method, high-modular layers

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DOI: 10.18577/2071-9140-2014-0-s4-118-124

UDC: 669.14:620.1

M.R. Orlov¹, A.M. Terekhin², L.V. Morozova¹, P.L. Zhuravleva¹, S.A. Naprienko¹

Study of influence of plastic deformation of 20H3MVF steel of ferrite structure on mechanical properties and nature of fracture

The influence of cold plastic deformation of 20H3MVF steel in annealed condition on structure, mechanical properties and fracture mechanism of ferrite was investigated. It was found that an increase of ferrite plastic deformation degree is accompanied by a decrease in the values of impact toughness KCU and KCT, an increase of hardness and microstresses and a decrease of coherent scattering areas and does not affect a mechanism of steel failure both under static and cyclic loading.

Keywords: steel 20H3MVF, ferrite, bainite, martensite, plastic deformation, transcrystallite kvaziskol, fractographic analysis, X-ray phase analysis

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20.

DOI: 10.18577/2071-9140-2014-0-s4-125-135

UDC: 669.01:621.01/03

V.B. Grigorenko¹, M.R. Orlov¹, L.V. Morozova¹, P.L. Zhuravlyova²

Research of static fracture of bolts from 30KhGSА steel in operating conditions

Alongside with advantages in strength indicators provided by the corresponding heat treatment, application of steels of the bainitic class causes some technological problems. Long-term stability of structure, which influences safety and reliability at operation, has to be provided at production of parts. In order to find out causes of destruction of 30KhGSА steel bolts, chemical and phase compositions, microstructure and fracture surfaces were investigated. As a result of the analysis undertaken, causes of bolts destruction were defined and recommendations about their elimination were made.

Keywords: fracture, bainite, residual austenite, martensite, structure

Reference List

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21.

DOI: 10.18577/2071-9140-2014-0-s4-136-139

UDC: 620.1

V.S. Erasov¹, N.O. Yakovlev¹, V.V. Avtaev²

Contemporary state of laboratory after the name of professor S.I. Kishkina

The history of Dr.E. S.I. Kishkina’s laboratory «Strength and durability of aircraft materials» formation and its contemporary state is described. Main scientific directions of research workers activity are presented.

Keywords: history of laboratory, S.I. Kishkina, strength and reliability of aircraft materials

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8. Haritonov G.M., Hitrova O.I., Jakovlev N.O., Erasov V.S. Zakonomernosti povedenija VJe deformacij v aviacionnyh steklah iz linejnyh i poperechnosshityh polimerov pri znakoperemennyh nagruzhenijah [Of the behavior of VE strain in aviation glasses of linear and cross-linked polymers with alternating loading] //Aviacionnaja promyshlennost'. 2011. №3. S. 28.
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Aviation materials and technologies

Scientific-technical journal ISSN 2713-0193

ARCHIVE

Aviation materials and technologies №S4, 2014

Contents

From scientific editor

Creative development of Professor, Doctor of Technical Science Sofia Issakovna Kishkina

Scientific activity formation of Professor, Doctor of Technical Science S.I. Kishkina

Remembrances of S.I. Kishkina and her role in the development of advanced aluminum alloys

Visualization of mechanical testing processes and experimental data processing via 3D-presentation

Search for corrosion damageability criteria

Consolidated powder nanomaterials

Sheet aluminum alloys fracture toughness definition

Change of the phase composition of high-alloy trip steel by static and cyclic deformation

Study and description of relaxation behavior of polymers (review)

Growing of the initial crack at tests of fracture toughness (crack resistance)

About possibility of analysis of fracture failures using parameters of the secondary cracks set (review)

Research of state changes of surface layers in aluminum - lithium alloys 1441 and V-1469 at a complex influence of stresses and corrosive environment

Study of material deformation by optical-correlation methods

Low-cycle fatigue for a given deformation and parameters of elastic-plastic deformation of superalloy VZh175

Study of fatigue life of 1163-T and V95o.ch.-T2 aluminum alloys after surface hardening

About discontinuity of LCF diagram in S-N coordinates for Ni-based superalloy

Arrangement of high-modular layers in a multilayer hybrid plate for its greatest resistance to stability loss

Study of influence of plastic deformation of 20H3MVF steel of ferrite structure on mechanical properties and nature of fracture

Research of static fracture of bolts from 30KhGSА steel in operating conditions

Contemporary state of laboratory after the name of professor S.I. Kishkina