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The Mechanics of Cross-Slip in L12 Alloys

Published online by Cambridge University Press:  22 February 2011

Georges Saada ,
Xiaoli Shi  and
Patrick VeyssiÈre Lem
Georges Saada
Affiliation:
CNRS-ONERA, BP 72, 92322 Châtillon Cedex, France
Xiaoli Shi
Affiliation:
CNRS-ONERA, BP 72, 92322 Châtillon Cedex, France
Patrick VeyssiÈre Lem
Affiliation:
Unité Mixte de Recherche : Centre National de la Recherche Scientifique (CNRS) - Office National d'Eude et de Recherche Arospatiale (ONERA) UMR 104.
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Abstract

Relationships between the microstructural organization in Ll2 alloys and the flow stress anomaly are discussed. Attention is paid to the origin of friction on the cube plane, to the stability of Kear-Wilsdorf (KW) locks and to the fine structure of kinks. The difficulty of dislocation multiplication and the easiness of their annihilation are outlined. Directions for a future model of the flow stress anomaly based on a close analysis of the microstructure are given.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 364: Symposium L – High-Temperature Ordered Intermetallic Alloys–VI , 1994 , 29
Copyright
Copyright © Materials Research Society 1995

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References

[1] Korner, A.K., in Structural Intermetallics. ed. by Darolia, R., Lewandowski, J.J., Liu, C.T., Martin, P.L., Miracle, D.B. and Nathal, M.V., (TMS, Warrendale, 1993), p. 419.Google Scholar
[2] Veyssière, P., MRS Proceedings, 133, p. 175.Google Scholar
[3] Molénat, G. and Caillard, D., Phil. Mag. A 69, 939 (1994).Google Scholar
[4] Takeuchi, S. and Kuramoto, E., Acta metall., 21, 415 (1973).Google Scholar
[5] Paidar, V., Pope, D.P. and Vitek, V., Acta metall. 32, 435 (1984).Google Scholar
[6] Vitek, V. and Sodani, Y., Scripta Met mater., .25, 939 (1991).Google Scholar
[7] Kantha, M., Cserti, J. and Vitek, V., Scripta metall. mater., 27, 481 (1992).Google Scholar
[8] Kantha, M., Cserti, J. and Vitek, V., Scripta metall. mater., 27, 487 (1992).Google Scholar
[9] Hirsch, P.B., Phil. Mag. A 65 (1992) 569; Progr. Mater. Sci., 36, 63 (1992).Google Scholar
[10] Saada, G. and Veyssière, P., see ref. [1], p. 87.Google Scholar
[11] Molénat, G., Caillard, D., Couret, A. and Paidar, V., MRS Proceedings, 288 (1993) 287.Google Scholar
[12] Veyssiere, P. and Saada, G., in Dislocations in Solids, ed. by Nabarro, F.R.N. (Elsevier, Amsterdam, 1995), in press.Google Scholar
[13] Saada, G. and Douin, J., Phil. Mag. Letters, 64, 67 (1992).Google Scholar
[14] Schoeck, G., Phil. Mag. A, 67 (1993) 201.Google Scholar
[15] Saada, G. and Veyssière, P., Phil. Mag. A, 66, 1183 (1992).Google Scholar
[16] Saada, G. and Veyssière, P., Phil. Mag. A, 70 (1994) in press.Google Scholar
[17] Paidar, V., Molénat, G. and Caillard, D., Phil. Mag. A, 66, 1081 (1992).Google Scholar
[18] Shi, X., Saada, G. and Veyssiere, P., MRS Proceedings, this volume.Google Scholar
[19] Couret, A., Sun, Y.Q. and Hazzledine, P.M., MRS Proceedings, 213, 317 (1993).Google Scholar
[20] Shi, X., (1994) unpublished results.Google Scholar
[21] Mills, M.J., Baluc, N. and Karnthaler, H.P., MRS Proceedings, 133, 203 (1993).Google Scholar
[22] Mills, M.J. and Chzran, D.C., Acta metall., 40, 3051 (1992).Google Scholar
[23] Hemker, K.J., Mills, M.J. and Nix, W.D., J. Mater. Res., 7, 2059 (1992).Google Scholar
[24] Baluc, N., Bonneville, J., Hemker, K.J., Martin, J.L., Schaiiblin, R., P. Spatig, Mater. Res. Engng. A164. 379(1993).Google Scholar
[25] Thornton, P.H., Davies, R.G. and Johnston, T.L., Metall. Trans., 1, 207 (1970).Google Scholar
[26] Ezz, S.S. and Hirsch, P.B., Phil. Mag. A, 69, 105 (1994).Google Scholar
[27] Heredia, F.E., PhD Thesis. University of Pennsylvania (1990).Google Scholar
[28] Khantha, M., Cserti, J. and Vitek, V., ref; [1], p. 399.Google Scholar
[29] Ezz, S.S. and Hirsch, P.B., Phil. Mag. A, in press.Google Scholar
[30] Clément, N., Couret, A. and Caillard, D., Phil. Mag. A, 64, 669 (1991).Google Scholar