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Dislocation Dynamics in Icosahedral Al-Pd-Mn Single Quasicrystals

  • Ulrich Messerschmidt (a1), Martin Bartsch (a1), Bert Geyer (a1), Lars Ledig (a1), Michael Feuerbacher (a2), Markus Wollgarten (a2) and Knut Urban (a2)...

Abstract

The paper reviews results from in situ straining experiments on Al-Pd-Mn single quasicrystals in a high-voltage electron microscope. Slip planes were determined from the orientation and width of slip traces. Dislocations are generated by a specific cross slip mechanism. On some slip traces, dislocations move at two distinctly different velocities. A stress exponent was determined on a single dislocation by observing its displacement under decreasing load. The in situexperiments reveal the behaviour of individual dislocations in a temperature range where the deformation of bulk specimens is strongly affected by recovery.

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1. Wollgarten, M., Beyss, M., Urban, K., Liebertz, H., Köster, U., Phys. Rev. Lett., 71, 549 (1993).
2. Wollgarten, M., Bartsch, M., Messerschmidt, U., Feuerbacher, M., Rosenfeld, R., Beyss, M., Urban, K., Phil. Mag. Lett., 71, 99 (1995).
3. Feuerbacher, M., Baufeld, B., Rosenfeld, R., Bartsch, M., Hanke, G., Beyss, M., Wollgarten, M., Messerschmidt, U., Urban, K., Phil. Mag. Lett., 71, 91 (1995).
4. Geyer, B., Bartsch, M., Feuerbacher, M., Urban, K., Messerschmidt, U., Phil. Mag. A, 80, 1151 (2000).
5. Messerschmidt, U., Bartsch, M., Geyer, B., Feuerbacher, M., Urban, K., Phil. Mag. A, 80, 1165 (2000).
6. Messerschmidt, U. and Bartsch, M., Ultramicroscopy, 56, 163 (1994).
7. Koehler, J.S., Phys. Rev., 86, 52 (1952).
8. Orowan, E., In: Dislocations in Metals, Am. Inst. of Mining and Metall. Engs., New York 1954, p. 103.
9. Rosenfeld, R., Feuerbacher, M., Baufeld, B., Bartsch, M., Wollgarten, M., Hanke, G., Beyss, M., Messerschmidt, U., Urban, K., Phil. Mag. Lett., 72, 375 (1995).
10. Messerschmidt, U., Häussler, D., Bartsch, M., Geyer, B., Feuerbacher, M., Urban, K., Proc. 7th Int. Conf. on Quasicrystals, to be published in Mater. Sci. Eng. A.
11. Wollgarten, M., Takeuchi, S., Messerschmidt, U., Bartsch, M., In: Quasicrystals, Proc. 6th Int. Congr. on Quasicrystals, Tokyo, 1997, World Scientific, Singapore 1998, p. 549.
12. Messerschmidt, U., Geyer, B., Bartsch, M., Feuerbacher, M., Urban, K., Mat. Res. Soc. Symp. Proc., Vol. 553, 319 (1999).
13. Schall, P., Feuerbacher, M., Bartsch, M., Messerschmidt, U., Urban, K., Phil. Mag. Lett., 79, 785 (1999).
14. Feuerbacher, M., Metzmacher, C., Wollgarten, M., Urban, K., Baufeld, B., Bartsch, M., Messerschmidt, U., Mater. Sci. Eng. A, 233, 103 (1997).
15. Messerschmidt, U., Bartsch, M., Feuerbacher, M., Geyer, B., Urban, K., Phil. Mag. A, 79, 2123 (1999).
16. Takeuchi, S., Hashimoto, T., Jap. J. Appl. Phys., 22, 2063 (1993).
17. Messerschmidt, U., Petukhov, B.V., Bartsch, M., Dietzsch, Ch., Geyer, B., Häussler, D., Ledig, L., Feuerbacher, M., Schall, P., Urban, K., Proc. ICSMA 12, to be publ. in Mater. Sci. Eng. A.

Dislocation Dynamics in Icosahedral Al-Pd-Mn Single Quasicrystals

  • Ulrich Messerschmidt (a1), Martin Bartsch (a1), Bert Geyer (a1), Lars Ledig (a1), Michael Feuerbacher (a2), Markus Wollgarten (a2) and Knut Urban (a2)...

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