The microstructure of single crystal nickel-base superalloys for advanced industrial gas turbine components

• Autorzy: Danciu D. , Dubiel B. , Penkalla H.J. , Schubert F. , Czyrska-Filemonowicz A.
• Konferencja: XVIth Physical Metallurgy and Materials Science Conference on Advanced Materials & Technologies AMT'2001, Gdańsk-Jurata, 16-20 September 2001
• Języki publikacji: PL

Abstrakty

PL

Metodami mikroskopii świetlnej i skaningowej mikroskopii elektronowej przeprowadzono analizę mikrostruktury dwóch nadstopów monokrystalicznych zawierających ren: CM 186 SX i CMSX-4 w stanie po odlaniu. Zaproponowana obróbka cieplna dla nadstopu CMSX-4 spowodowała ujednorodnienie mikrostruktury poprzez rozpuszczanie obszarów eutektycznych gama/gama' i wydzielania się cząstek fazy gama'. Na skutek dodawania pierwiastków stopowych obniżających temperaturę solidus do nadstopu CM 186 SX, wpływ obróbki ujednorodniającej był nieznaczny.

EN

Microstructural investigation on two single crystal rhenium-containing superalloys: as-cast CM 186 SX and CMSX-4 was performed by means of light and scanning electron microscopy. The technical proposed heat treatment for CMSX-4 alloy was very effective, in producing a very homogeneous microstructure as a result of solutioning of gamma/gamma' eutectic islands and reprecipitation of ordered gamma' particles. The technical proposed heat treatment of CM186 SX do not result in the same manner. The addition of solidus depressant elements to the CM 186 SX brought a reduced homogenization effect of the heat treatment. The chemical composition and structure in dendrite and eutectic areas of this alloy did not change significantly after the heat treatment.

Słowa kluczowe

PL

mikrostruktura; nadstop nanokrystaliczny; skład chemiczny; turbina gazowa; mikroskopia świetlna; mikroskopia elektronowa skaningowa

EN

microstructure; single crystal nickel-base superalloys; rhenium-containing superalloys; chemical composition; gas turbine; light electron microscopy; scanning electron microscopy

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Inżynieria Materiałowa
• Rocznik: 2001
• Tom: R. XXII, nr 4
• Strony: 274--277
• Opis fizyczny: Bibliogr. 10 poz., tab., rys.

Twórcy

autor

Danciu D.

• University of Mining and Metallurgy Krakow, Poland and Research Centre Julich, Germany

autor

Dubiel B.

• University of Mining and Metallurgy Krakow, Poland

autor

Penkalla H.J.

• Research Centre Julich, Germany

autor

Schubert F.

• Research Centre Julich, Germany

autor

Czyrska-Filemonowicz A.

• University of Mining and Metallurgy Krakow, Poland

• University of Mining and Metallurgy, Kraków

Bibliografia

• [1] R. Theenhaus, F. Schubert, The impact of materials research for energy technologies providing for the twenty-first century, Proc. 6th Liege Conference on Materials for advanced power engineering, Belgium, J.Lecomte-Beckers, F. Schubert and P.J. Ennis [eds], ISBN389336 228-2 , Forschungszentrum Julich, 1998, pp.1769-1788
• [2] D.H.Allen, J.E.Oakey, B.Scarlin, The new Cost action 522- "Power generation in the 21 st ccntury :- ultra efficient, low emission plant" ibid, pp 1825-1838
• [3] P.Caron, T.Khan, Third generation superalloys for single crystal blades, ibid, pp. 897-912
• [4] J. Svoboda, P.Lukas, Creep deformation modelling of superalloy single crystals, Acta Materialia, Vol 48, No 10, 2000, pp 2519-2528
• [5] K.P.L. Fullagar, R.W.Bromfield, M.Hulands, K.Harris, G.L.Erickson, S.L.Sikkenga, Aero Engine Test Experiencc With CMSX-4 Alloy Single Crystal Turbine Blades, Transactions of the ASME, Vol I 18, 1996, pp.380- 388
• [6] N.Matan et al., Creep of CMSX-4 superalloy single crystals: effects of misorientation and temperature, Acta Matcrialia, Vol 47, No. 5, 1999, pp.1549-1563,
• [7] Directionally solidified and single crystal superalloys, ASM Specialty Handbook, Heat- Rcsistant Matcrials, J.R. Davis & Associatcs [eds], 1997, pp 254-271
• [8] F.Schubert, G. Fleury, T. Steinhaus, Modelling of the ·mechanical behaviour of the singlc-crystal turbine alloy CMSX-4 during therrnomechanical loading, Modelling Simul.Matcr.Sci.Eng. 8, 2000, pp. 947-957
• [9] D. Goldschmidt, Single crystal bladcs, Materials for Advanccd Power Engineering, part 1, 1994, pp. 661-674
• [10] K.Harris, J.B. Wahl, New superalloy concept for single crystal turbine vancs and blades, Procceding of the 5th International Charles Parson Turbine Conferencc, UK, A.Strang, W.M. Banks, R.D Conroy, G.M. McColvin, J.C.Neal, S.Simpson [eds], ISBN 1-86125-113-0, Churchill College Cambridge, 2000, pp. 832-846