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Internal Strains Of A Creep Deformed Single Crystal Nickel-Based Superalloy

  • Uwe Glatzel (a1) and Andreas MÜller (a2)
Abstract
ABSTRACT

Neutron scattering experiments have been carried out with undeformed and creep deformed samples of the superalloy CMSX-4. From the measured constrained misfit data, obtained from different reflecting planes with respect to the external load axis, two strain tensors for horizontal and vertical matrix plates can be extracted.

A careful data analysis is necessary since the technical manufactured single crystals show a mosaic spreading of 0.5° and the wavelength spreading of the incident neutron beam, Δλ/λ is about 410-3 This is in the same range as the unknown constrained misfit quantities δc. A method has been developed which allows a calculated intensity distribution to be fitted to the measured one.

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References
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1 Frazier D.J., Whetstone J.R., Harris K., Erickson G.L. and R.E Schwer, High Temperature Materials for Power Engineering, Cost 501/505 Conf., Liège (1990)
2 Glatzel U., Microstructure and Internal Strains of Undeformed and Creep Deformed Samples of a Nickel-Base Superalloy (Verlag Köster, Berlin, 1994), ISBN 3-929937-91-3
3 Glatzel U. and Müller A., Scripta Met. Mat. 31, 285 (1994)
4. Glatzel U., Scripta Met. Mat. 31, 291 (1994)
5 Glatzel U. and Müller A., Numerical Predictions of Deformation Processes and the Behaviour of Real Materials, edited by Andersen S.I. et al. , (Riso National Laboratory, Roskilde, Denmark, 1994), 319
6 Müller L., Glatzel U. and Feller-Kniepmeier M., Acta Met. Mat. 41, 3401 (1993)
7 Schmidt R. and Feller-Kniepmeier M., Scripta Met. Mat. 29, 1079 (1993)
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MRS Online Proceedings Library (OPL)
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  • EISSN: 1946-4274
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