Changes in the Characteristics of the Profiles of X-Ray Diffraction Lines of Structural Steels in the Elastic Stress Field

Abstract:

The problems of improving operating procedures and diagnosing the bearing capacity of metal structures designed and operating in the Arctic and subarctic regions of the country with a long period of low climatic temperatures remain unresolved. The paper notes that the development of digital methods of non-destructive testing, primarily X-ray diffractometry methods, can provide technical diagnostics of structures by identifying the features of the deformation of the crystalline structure of structural materials in an elastic stress-strain state. It is shown that the application of the method of X-ray diffractometry of complex polycrystalline structural steels has sufficient resolution to detect changes in the fine structure under the elastically stressed state of the samples. The broadening of the diffraction line (B) profile characterizes the effect of the elastically stressed state of steel samples 08 ps and 09Г2С on the course of microdeformation processes in the surface layers of the metal. The effect of periodic annual temperature fluctuations on the profile characteristics of the diffraction lines of 08 ps structural steel samples was studied experimentally. It is established that low climatic temperatures contribute to the elimination of individual instrumental errors due to the design conditions of the experiment. A sharp change in the true half-width of the profile of diffraction lines (В) at stresses σ ≥ 0.5 σ_т indicates the minimum possible value of the allowable stress [σ] for structural steel 08 ps.

• Periodical: Materials Science Forum (Volume 992)
• Pages: 992-997
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.992.992
• Online since: May 2020
• Authors: V.P. Gulyaev*, P.P. Petrov, Ksenia V. Stepanova
• Keywords: Mechanical Properties, Static Load, Structural Steel, X-Ray Diffractometry, Yield Strength

References

[1] Y.L. Vorob'yov, V.A. Akimov, Y.I. Sokolov, Sistemnyye avarii i katastrofy v tekhnosfere Rossii, FGBU VNII GOCHS (FTS), Moscow, (2012).

[2] A.B. Arabey, Development of technical requirements for metal pipes of gas pipelines, Chernaya metallurgiya. 7 (2010) 3-10.

[3] V.M. Kushnarenko, Y.A. Chirkov, K.N. Materinko, A.V. Lukashov, D.N. Shchepinov, Methods for residual life predicting of hazardous production facilities, Mashinostroyeniye i mashinovedeniye, Intellekt. Innovatsii. Investitsii. 7 (2016) 177-123.

[4] V.V. Shaydakov, K.V. Chernova, Operational changes in the properties of pipe steel in oil production, Ekspozitsiya neft gaz. 58 (2017) 84-86.

[5] E.Y. Priymak, A.P. Phot, A.V. Stepanchukova, Analysis of accidental damage to exploration drill pipes during operation, Voprosy materialovedeniya. 89 (2017) 187-194.

[6] V.V. Kluev, B.V. Artemiev, V.I. Matveev, State and development of technical diagnostics methods, Zavodskaya laboratoriya. 81 (2015) 73-78.

[7] N.P. Aleshin, The possibilities of non-destructive testing methods in assessing the stress-strain state of loaded metal structures, Svarka i Diagnostika. 6 (2011) 44 – 47.

[8] Raschety i ispytaniya na prochnost. Metod rentgenostrukturnogo analiza izlomov. Opredeleniye glubiny zon plasticheskoy deformatsii pod poverkhnost'yu razrusheniya, R 50-54-52-88, Vsesoyuznyy nauchno – issledovatel'skiy institut po normalizatsii v mashinostroyenii, Moscow, (1988).

[9] V.P. Gulyaev, P.P. Petrov, K.V. Stepanova, Diagnostics of critical states of constructions operated under low temperature conditions, Polar Mechanics 2018, IOP Publishing, IOP Conf. Series: Earth and Environmental Science. 193 (2018) 012015.

DOI: 10.1088/1755-1315/193/1/012015

[10] N.A. Koneva, S.F. Kiseleva, N.A. Popova, E.V. Kozlov, Distribution of excess dislocation density during deformation of austenitic steel, Izvestiya RAN. 79 (2015) 1311 - 1313.

DOI: 10.3103/s1062873815090129

[11] P.A. Ershov, S.M. Kuznetsov, I.I. Snigireva, V.A. Yunkin, A.Y. Goyhman, A.A. Snigirev, High-resolution X-ray diffractometry using one-dimensional and two-dimensional refracting lenses, Poverkhnost. 6 (2015) 55–59.

[12] E.M. Grinberg, A.A. Alexeeva, S.G. Sheverev, Changes in the fine structure during low-temperature decomposition of martensite of hardened medium-carbon steel, Voprosy materialovedeniya. 86 (2016) 20-25.

[13] V.A. Grishin, Using the characteristics of diffraction lines of deformed metal materials in assessing the durability of structural elements, Dissertation, NGTU, Nizhniy Novgorod, (1994).

[14] E.I. Kosarina, O.A. Krupnina, A.A. Demidov, E.M. Turbin, Digital radiography in non-destructive testing of aircraft, Aviatsionnye materialy i technologii. 5 (2017) 562-574.

[15] A.P. Kolikov, A.V. Lyutsau, N.L. Lisunets, V.I. Gkadkov, N.F. Shpunkin, The effect of residual stresses on the quality of products during cold processing of sheet blanks, Izvestiya MGTU MAMI. 12 (2011) 139-144.

DOI: 10.17816/2074-0530-69927

[16] A.E. Blagov, Features of X-ray diffraction by crystals modulated by low-frequency ultrasonics, Dissertation, Crys RAS, Moscow, (2006).

[17] A.V. Kotelkin, I.G. Roberov, D.B. Matveev, I.S. Lednev, Detecting of residual life and methods to increase the level of safety in the operation of structural materials in aviation, Sovremennye materialy, technika i technologii. 4 (2016) 104-113.

[18] E.O. Kile, V.V. Korchevskiy, A.V. Syuy, Effect of equipment errors of an X-ray diffractometer on the width of the diffraction line, Fundamentalnye problemy sovremennogo materialovedeniya. 8 (2011) 7-10.

[19] V.V. Korchevskiy, E.A. Zhukov, E.O. Kile, A.V. Syuy, Elimination of systematic errors in measuring the width of diffraction lines by numerical methods, Vestnik TOGU. 24 (2012) 17-22.

[20] D.M. Levin, M.V. Bulavin, S.A. Kulikov, The study of residual stresses and textures in the walls of steel pipes by neutron stress diffractometry, Izvestiya Tulskogo GU. 2 (2013) 194-206.

[21] N. I. Tchernyshev, O. E. Sysoev, D. B. Solovev, E. P. Kiselyov, Basic Robotecnical Platform for Implementation of Accurate Farming Technologies. Bulletin of Electrical Engineering and Informatics (BEEI). 7(4) (2018) 522-528. [Online]. Available: http://dx.doi.org/10.11591/eei.v7i4.920.

DOI: 10.11591/eei.v7i4.920