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Heat treatment and CVD aluminizing of Ni-base René 80 superalloy

Wybrane pełne teksty z tego czasopisma
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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Purpose: This work presents the results of microstructure investigations which were carried out on Ni-base Rene 80 polycrystalline superalloy. Design/methodology/approach: Polycrystalline cast rods have been used in the studies. The heat treatment processes were conducted in ALD High Temperature Vacuum Furnace at 1204°C for 2 h, in Ar atmosphere followed by cooling to room temperature. The aluminizing processes were conducted by use of CVD method on as cast samples and after homogenizing-solution annealing. The diffusion low activity aluminide coatings have been produced using the CVD IonBond BPXPR0325S apparatus at various temperatures, for 4 h and applying different values of: flow rate of HCl through the outer AlCl3 generator and pressure in main retort in H2 atmosphere. The microstructure investigations were conducted using scanning electron microscope. To the purpose of analysis of the chemical composition an X-ray microanalysis technique was applied with the dispersion of the energy (EDS) using of Thermo and Noran equipment. Findings: It was found that samples without heat treatment had the typical cast microstructure with many areas of the y-y’ eutectic, after heat treatment process the microstructure was homogenized, i.e. the eutectic y-y’ has been dissolved, MC-type carbides were precipitated on the grain boundaries and the chemical composition was balanced. It was found also that after homogenizing heat treatment the samples had the thicker coating and had more homogenous additive and diffusion layer than the samples with as-cast microstructure. Research limitations/implications: Results will be used for further steps which will consist of CVD process and other different heat treatment. Practical implications: This CVD method will be used in the future for the production of modified aluminide bond coats on single crystal Ni-base superalloys underlying the ceramic EB-PVD or LPPS top coatings. Originality/value: In the future the production of chemical vapor deposited platinum (or Pd, Zr, Hf) aluminide diffusion coatings on nickel base superalloy substrate are planned.
Rocznik
Strony
30--38
Opis fizyczny
Bibliogr. 26 poz., rys., tab.
Twórcy
autor
  • Department of Materials Science, The Faculty of Mechanical Engineering and Aeronautics, Rzeszow University of Technology, Al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland
autor
  • Department of Materials Science, The Faculty of Mechanical Engineering and Aeronautics, Rzeszow University of Technology, Al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland
autor
  • Department of Materials Science, The Faculty of Mechanical Engineering and Aeronautics, Rzeszow University of Technology, Al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland
  • Department of Materials Science, The Faculty of Mechanical Engineering and Aeronautics, Rzeszow University of Technology, Al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland
autor
  • Department of Materials Science, The Faculty of Mechanical Engineering and Aeronautics, Rzeszow University of Technology, Al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland
autor
  • Department of Materials Science, The Faculty of Mechanical Engineering and Aeronautics, Rzeszow University of Technology, Al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland
Bibliografia
  • [1] ASM Specialty Handbook: Nickel, Cobalt, and Their Alloys, ASM International, 2000, 70-81.
  • [2] Kh. Rahmani, S. Nategh, Influence of aluminide diffusion coating on low cycle fatigue properties of RenD 80, Materials Science and Engineering A 486 (2008) 686-695.
  • [3] Kh. Rahmani, S. Nategh, Isothermal LCF behavior in aluminide diffusion coated René 80 near the DBTT, Materials and Design 30 (2009) 1183-1192.
  • [4] C.T. Sims, N.S. Stoloff, W.C. Hagel, Superalloys II, John Wiley & Sons, Inc., 1987.
  • [5] J. Doychak, M. Ruhle, TEM studies of oxidized NiAl and Ni3Al cross sections, 0xidation of Metals 31 (1989) 431-452.
  • [6] G. Sauthoff, Intermetallics, Weinheim-New York-Basel -Cambridge-Tokyo, VCH, 1995, 51-67.
  • [7] H.J. Grabke, M. Schüze, 0xidation of Intermetallics, Wiley-VCH, Weinheim-Berlin-NewYork, 1997, 79-170.
  • [8] G.W. Goward, D.H. Boone, C.S. Giggins, Trans. ASM 60 (1967) 228-241.
  • [9] G.W. Goward, D.H. Boone, Mechanism of formation of diffusion aluminide coatings on nickel-base superalloys, 0xidation of Metals 3 (1971) 475-95.
  • [10] J. Sieniawski, Criteria and methods of assessment materials for aviation turbine engine components, Publishing House of Technical University of Rzeszow, Rzeszów, 1995 (in Polish).
  • [11] Y. Tamarin, Protective coatings for turbine blades, ASM International, 2002.
  • [12] J. Sieniawski, Nickel and titanium alloys in aircraft turbine engines, Advances in Manufacturing Science and Technology 27/3 (2003) 23-24.
  • [13] R. Sivakumar, L.L. Seigle, On the kinetics of the pack-aluminization process. Metallurgical Transactions A 7/8 (1976) 1073-1079.
  • [14] K.L. Choy, Chemical vapour deposition of coatings, Progress in Materials Science 48 (2003) 57-170.
  • [15] J-H. Park, T. S. Sudarshan, Chemical Vapor Deposition, Surface Engineering Series 2, ASM International, 2001,1-44.
  • [16] W.-P. Sun, H.J. Lin, M.-H. Hon, CVD aluminide nickel, Metallurgical Transactions A 17 (1986) 215-220.
  • [17] S. Shankar, L.L. Siegle, Interdiffusion and intrinsic diffusion in the NiAl (S) phase of the Al-Ni system, Metallurgical Transactions A 9 (1978) 1467-1476.
  • [18] Y. Zhang, J.A. Haynes, B.A. Pint, I.G. Wright, W.Y. Lee, Martensitic transformation in CVD NiAl and (Ni,Pt)Al bond coatings, Surface and Coatings Technology 163-164 (2003) 19-24.
  • [19] M. Yavorska, J. Sieniawski, Functional properties aluminide layer deposited by CVD method on Inconel 713 LC Ni-base superalloy, Archives of Materials Science and Engineering 56 (2011) 187-192.
  • [20] M. Zielińska, J. Sieniawski, M. Yavorska, M. Motyka, Influence of chemical composition of nickel based superalloy on the formation of aluminide coatings, Archives of Materials Science and Engineering 56/2 (2011) 193-197.
  • [21] M. Yavorska, J. Sieniawski, Effect of diffusion on platinum coatings deposited on the surface of nickel based superalloy by the electroplating process, Archives of Materials Science and Engineering 44/2 (2010) 5-9.
  • [22] M. Zagula-Yavorska, J. Sieniawski, Effect of palladium diffusion in coatings deposited on the nickel based superalloy, Archives of Materials Science and Engineering 52/2 (2011) 69-73.
  • [23] M. Yavorska, J. Sieniawski, 0xidation behaviour of platinum modified aluminide coatings deposited by CVD method on nickel-based superalloys under air atmosphere, Journal of Achivements in Materials and Manufacturing Engineering 46/2 (2011) 204-210.
  • [24] G. Moskal, Thermal barrier coatings: characteristics of microstructure and properties, generation and directions of development of bond, Journal of Achievements in Materials and Manufacturing Engineering 37/2 (2009) 323-331.
  • [25] M. Hetmańćzyk, L. Swadźba, B. Mendala, Advanced materials and protective coatings in aero-engines application, Journal of Achievements in Materials and Manufacturing Engineering 24/1 (2007) 372-381.
  • [26] K. Shirvani, S. Firouzi, A. Rashidghamat, Microstructures and cyclic oxidation behaviour of Pt-free and low-Pt NiAl coatings on the Ni-base superalloy Rene-80, Corrosion Science 55 (2012) 378-384.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-b589c9e3-ae76-429d-a20b-b947951171b1
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