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Microstrain accumulation in multiphase superalloys

  • J. Repper (a1), M. Hofmann (a1), C. Krempaszky (a2), R. C. Wimpory (a3), W. Petry (a1) and E. Werner (a4)...


Four matrix-phase crystallographic directions of IN718 are investigated by in situ tensile tests using neutron diffraction. The elastic diffraction constants for all directions measured are compared to theoretical values calculated by the Kröner model. The differences between the microscopic and the macroscopic material response are given. The accumulation of microstrains in the different crystallographic directions is discussed. A comparison between the results of a single phase material (ingot IN718) and two differently thermal treated multiphase materials is presented.



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Behnken, H. (2003). Mikrospannungen in vielkristallinen und heterogenen Werkstoffen, Habilitationsschrift (Shaker-Verlag, Aachen).
Bürgel, R. (1991). Handbuch Hochtemperatur-Werkstofftechnik (Vieweg, Wiesbaden).
Durand-Charre, M. (1997). The Microstructure of Superalloys (Gordon and Breach Science Publishers, Amsterdam).
Dye, D., Stone, H. J., and Reed, R. C. (2001). “Intergranular and interphase microstresses,” Curr. Opin. Solid State Mater. Sci.COSSFX 5, 3137.10.1016/S1359-0286(00)00019-X
Holden, T. M., Holt, R. A., and Clarke, A. P. (1998). “Intergranular stains in Inconel-600 and the impact on interpreting stress fields in bent steam-generator tubing,” Mater. Sci. Eng., AMSAPE3 246, 180198.10.1016/S0921-5093(97)00732-6
Hutchings, M. T., Withers, P. J., Holden, T. M., and Lorentzen, T. (2005). Introduction to the Characterization of Residual Stress by Neutron Diffraction (Taylor & Francis, Boca Raton).
Kröner, E. (1958). “Berechnung der elastischen Konstanten des Vielkristalls aus den Konstanten des Einkristalls,” Z. Phys.ZEPYAA 151, 504518.10.1007/BF01337948
Wern, H., Johannes, R., and Walz, H. (1998). “Dependence of the X-ray elastic constants on the diffraction plane,” Phys. Status Solidi BPSSBBD 206, 545557.10.1002/(SICI)1521-3951(199804)206:2<545::AID-PSSB545>3.0.CO;2-J
Wimpory, R. C., Mikula, P., Saroun, J., Poeste, T., Li, J., Hofmann, M., and Schneider, R. (2008). “Efficiency boost of the materials science diffractometer E3 at BENSC: One order of magnitude due to a horizontally and vertically focusing monochromator,” Neutron NewsNTNEEJ 19, 1619.10.1080/10448630701831995



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