Determination of influence of thermo-cycles on hydrogen cracking of steel

• Autorzy: Skalsky V. , Rudavskyy D. , Matvijiv Y.
• Języki publikacji: EN

Abstrakty

EN

Influence of thermo-cycles "heating-cooling" on the hydrogen induced cracking of structural steels, which are widely used in the heat-power equipment is investigated in this paper. An acoustic emission method of diagnostics of specimens made of exploited and non-exploited material of steam pipelines is described. Effective diagrams of dependence of number of events on heat cycle number for the all groups of specimens are plotted.

Słowa kluczowe

EN

steel; heat cycling; hydrogen concentration; acoustic emission

PL

stal; wodór; emisja akustyczna; obieg ciepła

• Wydawca: Polskie Towarzystwo Diagnostyki Technicznej
• Czasopismo: Diagnostyka
• Rocznik: 2009
• Tom: nr 2(50)
• Strony: 19--22
• Opis fizyczny: Bibliogr. 10 poz., rys., tab.

Twórcy

autor

Skalsky V.

autor

Rudavskyy D.

autor

Matvijiv Y.

• H. V. Karpenko Physico-Mechanical Institute of National Academy of Sciences of Ukraine, Lviv, Naukova Str 5., Lviv, 79601,Ukraine,

Bibliografia

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• [3] Johnson E. W., Hill M. L.: The diffusivity of hydrogen in alpha iron// Trans. AIME, 1960, 218, P. 1104.
• [4] Hobson J. D.: The diffusion of hydrogen in steel at temperatures of - 78 oC to 200 oC// LSI, 1958, 189, P. 315.
• [5] Metal Handbook, ASM International, Metal Park, OH, 1948, P. 1208.
• [6] Pohmurskiy V. I., Fedorov V. V.: Effect of hydrogen on diffusive processes in metals. Lviv: Publishing House Enej, 1998, 207 p.
• [7] Skalskyi V. R., Koval P. M.: Some methodological aspects of application of acoustic emission. Lviv: Publishing House Spolom, 2007, 336 p.
• [8] Skalskyi V. R., Sergienko O. M., Selivonchic T. V.: Computation and optimization of geometry of waveguide of acoustic emission signals// Engineering science, 2005, No 9, P. 41.
• [9] Skalskiy V. R., Andreykiv O. E.: Estimation of bulk damaging in materials by the method of acoustic emission. Lviv: Publishing House Franco Lviv National state University, 2006, 330 p.
• [10] Skalskyi V. R., Rudavskiy D. V., Selivonchic T. V.: Estimation of concentration and pressure of molecular hydrogen in a metal after heat cycling// In Proc. 53-rd Internat. conf. “Hydrogen economy and hydrogen treatment of materials BOM-2007”, May, 21-26 2007, Donetsk, 2007, P.815.