Hydrogen and corrosion resistance of Ni-Co superalloys for gas turbine engines blades

• Autorzy: Balitskii A. I. , Kvasnitska Y. K. , Ivaskevich L. M. , Mialnitsa H. P.

Identyfikatory

DOI

10.5604/01.3001.0012.1380

• Języki publikacji: EN

Abstrakty

EN

Purpose: This paper is devoted to the investigation of gaseous hydrogen and ash gas turbine fuel influence on the mass loss in long-term corrosion and mechanical properties of cast heat-resistant blade materials. It has been established that the level of corrosion resistance of the investigated alloys (Ni59Cr21Co10W4Ti3Al3MoLa (SM-104-VI); Ni57Cr16Co12W6Ti4Al3Mo2Hf (SM-90-VI); Ni57Cr16Co11W6Ti4Al4Mo2Hf (SM-88U-VI)) correlated with the chromium content and is the highest among similar materials. The advantage of SM-104-VI alloy increases with the increasing of time base and temperature. Design/methodology/approach: This work presents research results concerning corrosion and hydrogen resistance of a investigated alloys examined at a standart mechanical tests under short-term static tension was determined on smooth cylindrical five-time samples with a diameter of the working part 5 mm at speed 1 mm/min. The destructed areas were examined by optical and electron microscopes with computer image analysis. Findings: It has been found that the level of resistance of the investigated alloys high- temperature sulfide and oxide corrosion in the ash of the gas turbine fuel is correlated with the criterion alloying and is the highest among the known materials of the blades. The value of specific mass loss decreases in the order of SM-88U-VI, SM-90-VI, SM-104-VI. Moreover, its advantage over alloys of SM-90-VI and SM-88U-VI as bigger as the time the corrosive environment. Research limitations/implications: An essential problem is the verification of the results obtained using the standart mechanical tests, computer-based image analysis and other methods. Practical implications: The observed phenomena can be regarded as the basic explanation of reduces the plasticity characteristics of the alloys for gas turbine blades. Originality/value: The value of this work is that increasing temperature reduces the negative influence of hydrogen, however, even at 900°C, the values of elongation and transverse contraction in hydrogen is lower than in the air. For a short stretch in the temperature interval 20-900°C the least sensitive to the action of hydrogen at a pressure of 30 MPa is a single crystal SM-90-VI alloy.

Słowa kluczowe

EN

Ni-Co superalloy; corrosion resistance; hydrogen resistance; specific mass loss; embrittlement

PL

nadstop Ni-Co; odporność na korozję; odporność na wodór; specyficzna utrata masy; kruchość

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2018
• Tom: Vol. 91, nr 1
• Strony: 5--14
• Opis fizyczny: Bibliogr. 19 poz.

Twórcy

autor

Balitskii A. I.

• Karpenko Physico-Mechanical Institute National Academy of Sciences of Ukraine, 5 Naukova str., 79060, Lviv, Ukraine
• West Pomeranian University of Technology in Szczecin, Al. Piastow 19, 70-310 Szczecin, Poland

autor

Kvasnitska Y. K.

• Physical and Technological Institute of Metals and Alloys National Academy of Sciences of Ukraine, 34/1 Vernadskoho av., 03680, Kyiv, Ukraine

autor

Ivaskevich L. M.

• Karpenko Physico-Mechanical Institute National Academy of Sciences of Ukraine, 5 Naukova str., 79060, Lviv, Ukraine

autor

Mialnitsa H. P.

• Zorya-Mashproekt Gas Turbine Research and Development Complex, 42A Bogoyavlenskiy pr., 54018, Mykolaiv, Ukraine

Bibliografia

• 1. A.A. Khalatov, K.A. Yushchenko, B.V. Isakov, Y.J. Dashevsky, A.P. Shevtsov, Gas turbine engineering in Ukraine: current state and development prospects, VisnykNAS of Ukraine 12 (2013) 40-49.
• 2. E. Bancalari, P. Chan, I.S. Diakunchak, Advances Hydrogen Turbine Development, Proceedings of the 24th Annual International Pittsburgh Coal Conference, University of Pittsburgh, 2007, 1-16.
• 3. A.I. Balitskii, V.V. Panasyuk, Workability Assessment of Structural Steels of Power Plant Units in Hydrogen Environments, Strength of Materials 41/1 (2009) 52-57, doi: https://doi.org/10.1007/ s11223- 009-9097-4.
• 4. H.R. Gray, Embrittlement of Nickel-, Cobalt-, and Iron-base Superalloys by Exposure to Hydrogen, National Aeronautics and Space Administration. - NASA Technical Note - TN D-7805, Washington, 1975, 1-44.
• 5. E.N. Kablov, Cast blades of gas turbine engines (alloys, technology, coatings), MISIS, Moscow, 2001, 632.
• 6. Ch. Sims, B. Hagel, Superalloys, Metallurgy, Moscow, 2004, 576.
• 7. P.J. Zhou, J.J. Yu, X.F. Sun, H.R. Guan, X.M. He, Z.Q. Hu, Influence of Y on stress rupture property of a Ni-based superalloy, Materials Science and Engineering A 551 (2012) 236-240, doi: https://doi.org/10.1016/j.msea.2012.04.117.
• 8. Y. Amouyal, D.N. Seidman, The role of hafnium in the formation of misoriented defects in Ni-based superalloys: An atom-probe tomographic study, Acta Materialia 59/9 (2011) 3321-3333, doi: https://doi.org/10.1016/j.actamat.2011.02.006.
• 9. V.I. Nikitin, Corrosion and protection of gas turbine blades, Engineering L (1987) 272.
• 10. Yu.K. Petrenya, I.V. Nikitin, Tasks in the field of development of corrosion-resistant nickel alloys, Heavy Engineering 10 (2002) 47.
• 11. I.H. Kvasnytska, Corrosion properties of nickel-based heat-resistant alloys, Casting Process 3 (2016) 55-62.
• 12. I.H. Kvasnytska, I.I. Maksyuta, H.P. Mialnitsa, Increased resistance to high-temperature corrosion of heat-resistant alloys as a reserve for increasing the resource capacity of gas turbine engines, Metal and Casting of Ukraine 5 (2016) 3-7.
• 13. A.I. Balitskii, L.M. Ivaskevich, Metallurgical methods of improvement of hydrogen brittleness and crack resistance of heat-resistant nickel alloy, Advances in Electrometallurgy - Cambridge International Scientific Publication 3/9 (2017) 43-50.
• 14. V.I. Tkachev, L.M. Ivaskevich, I.M. Levina, Distinctive features of hydrogen degradation of heat- resistant alloys based on nickel, Materials Science 33/4 (1997) 524-531, doi: https://doi.org/10.1007/ BF02537549.
• 15. Z. Zhang, G. Obasi, R. Morana, M. Preuss, In-situ observation of hydrogen induced crack initiation in a nickel-based superalloy, Scripta Materialia 140 (2017) 40-44, doi: https://doi.org/ 10.1016/j.scriptamat.2017.07.006.
• 16. A.I. Balitskii, L.M. Ivaskevich, V.M. Mochulskyi, Crack resistance of age-hardening Fe-Ni alloys in gaseous hydrogen, Proceedings of the 18th European Conference on Fracture “Fracture of Materials and Structures from Micro to Macro Scale”, Dresden, Germany, 2010, Paper N 80, 1-8.
• 17. A.I. Balitskii, L.M. Ivaskevich, V.M. Mochulskyi, O.M. Holiyan, Influence of hydrogen on the crack resistance of 10Kh15N27T3V2MR steel, Materials Science 45/2 (2009) 258-267, doi: https://doi.org/ 10.1007/s11003-009-9184-5.
• 18. A.I. Balitskii, L.M. Ivaskevich, V.M. Mochulskyi, Temperature dependences of age-hardening austenitic steels mechanical properties in gaseous hydrogen, Proceedings of the 12th International Conference on Fracture, ICF-12, Ottawa, ON, Canada, 2009, Vol. 8, 5786-5792, Code 93954.
• 19. O.I. Balyts'kyi, J. Chmiel, P. Krause, J. Niekrasz, M. Maciag, The role of hydrogen in cavitation fracture of C45 steel in lubricants, Materials Science 45/5 (2009) 651-654, doi: 10.1007/s11003-010-9227-y.