Paper Titles

Modeling of Precipitation Kinetics of TCP-Phases in Single Crystal Nickel-Base Superalloys
p.180

Microstructure Prediction during Incremental Processes for Hot Forming of 718 Alloy
p.186

Analysis of the Alloying System in Ni-Base Superalloys Based on Ab Initio Study of Impurity Segregation to Ni Grain Boundary
p.192

Application of Thermodynamic and Kinetic Modeling to Diffusion Simulations in Nickel-Base Superalloy Systems
p.198

Numerical Modelling of Stress and Strain Evolution during Solidification of a Single Crystal Superalloy
p.204

Modelling Texturised Cast Structures in the Forging of Superalloys
p.210

Viscoplastic Phase Field Simulation of Microstructural Evolutions under Complex Loadings in Ni-Base Superalloys
p.216

The Effect of Multiaxial Stress State on Formation of Rafts in CMSX-4 Superalloy during Creep
p.222

Modelling of Phase Evolution during Aluminizing Processes
p.228

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 278Numerical Modelling of Stress and Strain Evolution...

Numerical Modelling of Stress and Strain Evolution during Solidification of a Single Crystal Superalloy

Article Preview

Abstract:

During the manufacture of turbine blades from single crystal nickel-based superalloys by investment casting, recrystallisation can occur during solution heat treatment. The introduction of grain boundaries into a single crystal component is potentially detrimental to performance, and therefore manufacturing processes and/or component geometries should be chosen to prevent their occurrence. In this work, numerical models have been designed to enable a predictive capability for the factors influencing recrystallisation to be constructed. The root cause is plasticity on the microscale caused by differential thermal contraction of metal, mould and core; when the plastic deformation is sufficient, recrystallisation can take place subsequently. The models take various forms. First, one-dimensional models based upon static equilibrium have been produced – our calculations indicate that plastic strain is likely to take place in two temperature regimes: by creep between 1150°C and 1000°C and by tensile (time-independent) strain below 650°C. The idea of a strain-based criterion for recrystallisation is then proposed. Second, more sophisticated three-dimensional calculations based upon the finite element method are carried out. Our predictions are compared critically with experimental information.

By email Full Text Pdf

You might also be interested in these eBooks

Euro Superalloys 2010

Info:

Periodical:

Advanced Materials Research (Volume 278)

Pages:

204-209

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.278.204

Citation:

Cite this paper

Online since:

July 2011

Authors:

Chinnapat Panwisawas, Jean Christophe Gebelin, Nils Warnken, Robert W. Broomfield, Roger C. Reed

Keywords:

Casting, Recrystallization, Single Crystal Superalloy, Solidification

Export:

RIS, BibTeX

Permissions:

Creative Commons CC BY 4.0

[1] D.C. Cox, B. Roebuck, C.M.F. Rae, and R.C. Reed: Materials Science and Technology Vol. 19 (2003), p.440–446.

[2] R.C. Reed: The Superalloys: Fundamentals and Applications. Cambridge University Press, Cambridge (2006).

[3] P.R. Rios, F. S. Jr, H.R.Z. Sandim, R.L. Plaut, and A.F. Padiha: Materials Research Vol. 8 (2005), p.225–238.

[4] R.D. Doherty, D.A. Hughes, F.J. Humphreys, J.J. Jonas, D. Juul Jensen, M.E. Kass- ner, W.E. King, T.R. McNelley, H.J. McQueen, and A.D. Rollett: Materials Science and Engineering, Vol. A238 (1997), p.219–274.

DOI: 10.1016/s0921-5093(97)00424-3

[5] J.G. Byrne: Recovery, Recrystallisation and grain growth. The MacMillan Company, New York (1965).

[6] P. Cotterill and P.R. Mould: Recrystallisation and grain growth in metals. Surrey University Press, London (1976).

[7] F.J. Humphreys and M. Hatherly: Recrystallisation and related annealing phenomena. Elsevier Science Ltd., Oxford (1995).

[8] S.S. Gorelik: Recrystallization in metals and alloys. Moscow: MIR Publishers, (1981).

[9] Sir Alan Cottrell: An introduction to metallurgy. Edward Arnold (Publishers) Ltd, Cambridge, 2nd edition (1975).

[10] B. N. J. Persson: Physical Review B, Vol. 61(2000), p.5949–5966.

[11] R.W.K. Honeycombe: The plastic deformation of metals. Edward Arnold Publishers. Ltd., London, 2nd edition (1984).

[12] A.J. Fletcher: Thermal stress and strain generation in heat treatment. Elsevier Science Publishers. Ltd., Essex (1989).

[13] G.E. Dieter: Mechanical Metallurgy. Materials Science and Engineering Series. McGraw-Hill, Singapore, 3rd edition (1986).

[14] V.E. Saouma: Advanced Mechanics of Materials. University of Colorado, Boulder, (2002).

[15] T.R. Chandrupatla and A.D. Belegundu. Introduction to Finite Elements in Engineering. Prentice hall, New Jersey (1991).

[16] ESI Group: ProCAST 2009. 0 User's Manual Volume 1. (2009).

[17] ESI Group: ProCAST 2009. 0 User's Manual Volume 2. (2009).

[18] R.W. Broomfield. Review of creep data on As-cast RR3010 and CMSX-4, generated by the National Physical Laboratory. Technical report, The University of Birmingham, March (2009).

[19] B. Roebuck and R. Morrell: Elevated temperature mechanical and physical property tests on single crystal Ni alloys. CMMT(D) 269, National Physical Laboratory, (2000).

[20] R. Morrell, J. M. Cox, B. Monaghan, and L. Chapman. Property characterisation of core and mould ceramics for directional solidification of turbine blade alloys. CMMT(D) 259, National Physical Laboratory, (2001).

[21] R. Morrell and L. Chapman. Thermal and mechanical properties of a casting mould material. Technical Report 07110082/1, National Physical Laboratory, (2008).

[22] R. Morrell and L. Chapman. Thermal and mechanical properties of a casting mould material. Technical Report E07110005/1, National Physical Laboratory, (2008).