Liquid metal induced embrittlement as a case of stress corrosion cracking?

• Autorzy: Wolski K.
• Języki publikacji: EN

Abstrakty

EN

Lmie (liquid metal indueed embrittlement) was studied on two model-systems: ni-bi at 700°c and cu-bi at 500°c. Lmie has been split in two independent steps, namely intergranular penetration at high temperature in absence of any external stress and room temperature embrittlement. Both systems exhibit rapid intergranular penetration with parabolic kinetics and subsequent room-temperature brittleness due to the intergranular diffusion of bismuth. The concentration profile of bismuth in grain boundaries bas been obtained by quantitative auger electron spectroscopy. For both systems an approximately one hundred microns transition zone between unaffected and embrittled part of grain boundary bas been shown, as opposed to Some nanometres transition length typical of the wetting phenomena. A major implication of these results is that the modelling of intergranular penetration and liquid metal embrittlement have to be based on a diffusionnal mechanism operating at a very tip of the penetration profile and in this sense lme (but not lmie) can be considered as a case of stress corrosion cracking.

Słowa kluczowe

EN

liquid metal embrittlement; LME; intergranular penetration; intergranular diffusion; spallation; bicrystals

• Wydawca: Politechnika Gdańska
• Czasopismo: Advances in Materials Science
• Rocznik: 2007
• Tom: Vol. 7, nr 1(11)
• Strony: 93--99
• Opis fizyczny: Bibliogr. 18 poz., rys.

Twórcy

autor

Wolski K.

• Centre SMS, Ecole des Mines de St-Etienne, CNRS UMR 5146 PECM 158, cours Fauriel 42 023 Saint Etienne France

Bibliografia

• [1] M. Salvatores, M. Spiro, F. Barbier, and Y. Poitevin, Clefs CEA, 37 (1997-1998 hiver) 14-27.
• [2] G. S. Bauer, Y. Dai, S. Maloy, L. K. Mansur, and H. Ullmaier, J. of Nucl. Mat., 296 (2001), pp. 321-325.
• [3] F. Barbier and A. Rusanov, J. of Nucl. Mat., 296 (2001), pp. 231-236.
• [4] T. Auger and G. Lorang, Scripta Mat., 52 (2005), pp. 1323-1328.
• [5] E. E. Glickman, Interf. Sci., 11 (2003), pp 451-459.
• [6] G. H. Bishop, Trans. AIME, 242 (1968), pp 1343-1351.
• [7] E. Glikman, L. V. Tuzov, and A. I. Cherepanov, Sov. Phys. 1., 23 (5j(198f)), pp. 364-375.
• [8] V. Laporte, K. Wolski, and M. Biscondi, in EDEM’2003 Environmental Degradation of Engineering Materials, edited by J.-M. Olive, 29 June - 2 July 2003, Bordeaux, France (2003).
• [9] N. Marie, K. Wolski, and M. Biscondi, Scripta Mat., 43 (2000), pp. 943-949.
• [10] N. Marie, K. Wolski, and M. Biscondi, J. of Nucl. Mat., 296 (2001), pp. 282-288.
• [11] K. Wolski, N. Marie, V. Laporte, and M. Biscondi, J. de Phys. IV, (2002), pp. 249-261.
• [12] K. Wolski, V. Laporte, N. Marie, and M. Biscondi, Interf. Sci., 9 (2001), pp. 183-189.
• [13] K. Wolski, N. Marie, and M. Biscondi, Surf. Interf. An., 31 (2001), pp. 280-286.
• [14] V. Laporte, P. Berger, and K. Wolski, Surf. Interf. An., 37 (2005), pp. 809-820.
• [15] B. Straumal and W. Gust, Mat. Sci. Forum, 207-209 (1996), pp. 59-68.
• [16] D. Bika and C. J.. McMahon JR, Acta Metall. Mater., 43 [5] (1995), pp. 1909-1916.
• [17] S. G. Roberts, Mat. Sci. Eng., A234-236 (1997), pp. 52-58.
• [18] D. Bika, J. A. Pfaendtner, M. Menyhard, and C. J. McMahon JR, Acta Metall. Mater., 43 [5] (1995), pp. 1895-1908.