Evolution of size and morphology of γ′ precipitates in UDIMET 720 Li during continuous cooling

Proceedings of the International Symposium on Superalloys

Volumn , Issue , 2008, Pages 829-836

  Radis, R ^a   Schaffer, M ^a   Albu, M ^a   Kothleitner, G ^a   Polt P ^a   Kozeschnik, E ^a,b  

^a GRAZ UNIVERSITY OF TECHNOLOGY   (Austria)

^b MATERIALS CENTER LEOBEN FORSCHUNG GMBH   (Austria)

Author keywords

Gamma prime; Multimodal; Nickel based alloy; Precipitation kinetics

Indexed keywords

COMPUTER SOFTWARE; COOLING; LITHIUM ALLOYS; NICKEL; NICKEL ALLOYS; PRECIPITATES; SUPERALLOYS;

CONTINUOUS COOLING; COOLING RATES; DISCONTINUOUS PRECIPITATIONS; GAMMA PRIME; INPUT DATUM; MULTIMODAL; NICKEL BASED ALLOY; NICKEL-BASE SUPERALLOYS; PRECIPITATE DISTRIBUTIONS; PRECIPITATION KINETICS; SEM; SIMULATION RESULTS; TWO PARAMETERS;

PRECIPITATION (CHEMICAL);

EID: 60349119025     PISSN: None     EISSN: None     Source Type: Conference Proceeding    
DOI: None     Document Type: Conference Paper

References (37)

1. R.A. Ricks, A.J. Porter and R.C. Ecob, "The Growth of γ′ Precipitates in Nickel-Base Superalloys", Acta Metall., 31 (1983), 43-53.
2. T. Grosdidier, A. Hazotte and A. Simon, "Precipitation and Dissolution Processes in γ/ γ′ Single Crystal Nickel-Based Superalloys", Mat. Sci. Eng., A256 (1998), 183-196.
3. E. Hornbogen and M. Roth, "Die Verteilung kohärenter Teilchen in Nickellegierungen", Z. Metallkd., 58 (1967), 842-855.
4. T. Maebashi and M. Doi, "Coarsening Behaviours of Coherent γ′ and γ Precipitates in Elastically Constrained Ni-Al-Ti Alloys", Mat. Sci. Eng., A373 (2004), 72-79.
5. 3Al Precipitates in Binary Ni-Al Alloys, Acta Metall. Mater"., 40(10) (1992), 2661-2667.
6. T. Miyazaki, K. Nakamura and H. Mori, "Experimental and Theoretical Investigations on Morphological-Changes of γ′-Precipitates in Ni-Al Single-Crystal During Uniaxial Stress-Annealing", J. Mater. Sci., 14(8) (1979), 1827-1837.
7. T. Miyazaki, H. Imamura, H. Mori and T. Kozakai, "Theoretical and Experimental Investigations on Elastic Interactions Between γ′- Precipitates in A Ni-Al Alloy", J. Mater. Sci., 16(5) (1981), 1197-1203.
8. A. Hazotte, T. Grosdidier and S. Denis, "γ′ Precipitate Splitting in Nickel-Based Superalloys: A 3-D Finite Element Analysis", Scripta Mater., 34(4) (1996), 601-608.
9. M. Doi and T. Miyazaki, "γ′-Precipitate Morphology Formed Under the Influence of Elastic Interaction Energies in Nickel-Based Alloys", Mat. Sci. Eng., 78(1) (1986), 87-94.
10. H. Monajati, M. Jahazi, R. Bahrami and S. Yue, "The Influence of Heat Treatment Conditions on γ′ Characteristics in UDIMET 720", Mat. Sci. Eng., A 373 (2004), 286-293.
11. T. Grosdidier, A. Hazotte and A. Simon; "On the Dissolution Mechanisms of γ′-precipitates in Nickel-Based Superalloys", Scripta Metall. Mater., 30(10) (1994), 1257-1262.
12. M.P. Jackson and R.C. Reed, "Heat Treatment of UDIMET 720Li: The Effect of Microstructure on Properties", Mat. Sci. Eng., A259 (1999), 85-97.
13. F. Torster, G. Baumeister, J. Albrecht, G. Lütjering, D. Helm and M.A. Daeubler, "Influence of Grain Size and Heat Treatment on the Microstructure and Mechanical Properties of the Nickel-Base Superalloy U 720 Li, Mat. Sci. Eng., A234-236 (1997), 189-192.
14. H.J. Penkalla, J. Wosik and A. Czyrska-Filemonowicz, "Quantitative Microstructoral Characterization of Ni-Base Superalloys, Mater. Chem. Phys., 81 (2003), 417-423.
15. P.M. Sarosi, B. Wang, J.P. Simmons, Y. Wang and M.J. Mills, "Formation of Multimodal Size Distributions of γ′ in a Nickel-Base Superalloy During Interrupted Continuous Cooling", Scripta Mater., 57 (2007), 767-770.
16. S.S. Babu, M.K. Miller, J.M. Vitek and S.A. David, "Characterization of the Microstructure Evolution in a Nickel-Base Superalloy During Continuous Cooling Conditions", Acta. Mater., 49 (2001), 4149-4160.
17. J.P. Simmons, Y. Wen, C. Shen and Y.Z. Wang, "Microstructural Development Involving Nucleation and Growth Phenomena Simulated with the Phase Field Method", Mat. Sci. Eng., A365 (2004), 136-143.
18. Y.H. Wen, J.P. Simmons, C. Shen, C. Woodward, Y.Wang, "Phase-Field Modeling of Bimodal Particle Size Distributions During Continuous Cooling", Acta Mater, 51 (2003), 1123-1132.
19. D.U. Furrer and H.J. Fecht, "γ′ Formation in Superalloy U720Li", Scripta Mat., 40(11) (1999), 1215-1220.
20. J. Mao, K.M. Chang, W. Yang, K. Ray, S.P. Vaze and D.U. Furrer, "Cooling Precipitation and Strengthening Study in Powder Metallurgy Superalloy U720Li", Metall. Trans. A., 32(10) (2001), 2441-2452.
21. J. Mao, K.M. Chang, W. Yang, D.U. Furrer, K. Ray and S.P. Vaze, "Cooling Precipitation and Strengthening Study in Powder Metallurgy Superalloy Rene88DT", Mat. Sci: Eng., A332 (2002), 318-329.
22. T.P. Gabb, D.G. Backman, D.Y. Wie, D.P.Mourer, D. Furrer, Anita Garg and D.L. Ellis, " γ′ Formation in a Nickel-Base Disk Superalloy", Proc. in Superalloys 2000, TMS (2000), 405-414.
23. J. Svoboda, F.D. Fischer, P. Fratzl and E. Kozeschnik, "Modelling of Kinetics in Multi-Component Multi-Phase Systems with Spherical Precipitates I. - Theory", Mater. Sci. Eng., A385 (2004), 166-174.
24. E. Kozeschnik, J. Svoboda, P. Fratzl and F.D. Fischer, "Modelling of Kinetics in Multi-Component Multi-Phase Systems with Spherical Precipitates II. - Numerical Solution and Application", Mater. Sci. Eng., A385 (2004), 157-165.
25. E. Kozeschnik, J. Svoboda and F.D. Fischer, "Modified Evolution Equations for the Precipitation Kinetics of Complex Phases in Multi-Component Systems", CALPHAD, 28 (4) (2005), 379-382.
26. M. Stockinger, "Mikrostrukturelle Simulation des Gesenkschmiedens von Nickelbasis - Legierungen" (Ph.D. thesis, Technische Universität Graz - Austria, 2003).
27. B. Sonderegger, "Modifications of Stereological Correction Methods for Precipitation Parameters using Transmission Microscopy", Ultramicroscopy, 107 (2007), 587-597.
28. P.F.Schmidt, "Praxis der Rasterelektronenmikroskopie und Mikrobereichsanalyse" (Münster - Germany: Expert Verlag, 1994).
29. Svoboda J; Turek I; Fischer FD; "Application of the Thermodynamic Extremal Principle to Modeling of Thermodynamic Processes in Material Sciences", Philosophical Magazine, 85(31) (2005), 3699-3707.
30. R. Kampmann and R. Wagner, "Kinetics of Precipitation in Metastable Binary Alloys - Theory and Applications", Acta Scripta Metall, series, "Decomposition of Alloys: the Early Stages" (1984), 91-103.
31. K.G.F. Janssens, D. Raabe, E. Kozeschnik, M.A. Miodownik and Britta Nestler, "Computational Materials Engineering - An Introduction to Microstructure Evolution" (Oxford - UK: Elsevier Academic Press 2007).
32. K. Russell, "Nucleation in Solids: The Induction and Steady States", Adv. Colloid. Sci., 13 (1980), 205-318.
33. ThermoTech, Ni-Base Version 3.0 http://www.diermotech.co.uk/databases. html (01.08.07).
34. C.E. Campbell, W.J. Boettinger, and U.R. Kattner, "Nickel Mobility Database by C.E. Campbell", Acta Mater, 50 (2002), 775-792.
35. D.A. Porter and K.E. Easterling, "Phase Transformations in Metals and Alloys " (United States of America - Boca Raton: CRC Press, 2004).
36. M. Schaffer, J. Wagner, B. Schaffer, M. Schmied and H. Mulders, "Automated Three-Dimensional X-ray Analysis Using a Dual-Beam FIB", Ultramicroscopy, 107 (2007), 587-597.
37. E. Nembach and G. Neite, "Precipitation Hardening of Superalloys by Orderd γ′-Particles", Mat. Sci, 29 (1985), 177-319.