On the Kinetic Mechanism of Ga Penetration in Al Bicrystals under Small Residual Stress

Abstract:

Article Preview

Thermodynamic conditions for spontaneous grain boundary wetting (GBW) and stress driven liquid metal embrittlement (LME) are related to each other. Kinetic mechanism responsible for fast GB penetration (GBP) under small stress is described. Dissolution–condensation mechanism of LME and linear fracture mechanics for calculation of crack profile are applied to the classical system “Al-liquid Ga”. The results tend to support the idea that the recently observed fast linear penetration of Ga along 150° tilt <110> GB of Al should be considered as propagation of LME crack under small residual stress rather than as spontaneous GBW. With the residual tensile stress σ≈ 0.5MPa acting normal to the GB plane, all major findings reported for this model system are explained in semi quantitative way assuming that GB spreading coefficient is extremely small by its absolute value, i.e. that the system is near the threshold of spontaneous GBW.

Info:

Periodical:

Edited by:

B.S. Bokstein and B.B. Straumal

Pages:

201-212

DOI:

10.4028/www.scientific.net/DDF.249.201

Citation:

E. E. Glickman "On the Kinetic Mechanism of Ga Penetration in Al Bicrystals under Small Residual Stress", Defect and Diffusion Forum, Vol. 249, pp. 201-212, 2006

Online since:

January 2006

Export:

Price:

$38.00

[1] A.P. Sutton and R.W. Balluffi: Interfaces in Crystalline Materials (Clarendon Press, Oxford 1996).

[2] E. Glickman and M. Nathan: J. Appl. Phys. Vol. 85 (1999), p.3185.

[3] D. Chatain, E. Rabkin, J. Derenne and J. Bernardini: Acta mater. Vol. 49 (2001), p.1123.

[4] A. Vilenkin: Diffusion , Segregation and Stresses in Material , eds. B. Bokstein and B. Straumal (Scitec Publications , Switzerland 2003).

[5] B. Joseph, M. Piscat and F. Barbier: Eur. Phys. J. AP Vol. 5 (1999), p.19.

[6] E. Glickman: in Multiscale Phenomena inPlasticity, J. Lepinoux et al. (eds. ) , (Kluwer Academic Publishers, Netherlands 2000), p.383.

[7] E. Glickman: Interf. Sci. Vol. 11 (2003), p.451.

[8] Structural Materials for Hybrid Systems: A challenge in Metallurgy, D. Gorse and J. -L. Boutard (eds. ) J. de Physique IV, Procs. Vol. 12 (2002), p.8.

[9] W. Rostoker, J.M. Mc Caughey and H. Marcus: Embrittlement by Liquid Metals, (Nostrad, Rheinhold 1960).

[10] P. Fernandez, R. Clegg and D.R. Jones: Eng. Fail. Anal. Vol. 1 (1994), p.51.

[11] V.I. Nikitin, Physico-chemical Phenomena in Interaction of Liquid and Solid Metals (Atomizdat Publ. House, Moscow 1967) in Russian.

[12] V.I. Likhtman, E.D. Shchukin and P.A. Rehbinder: Physico-Chemical Mechanics of Metals (Acad. Sci. USSR Publ., Moscow 1962) in Russian.

[13] A.R.C. Westwood, C.M. Preece and M. H Kamdar: Trans. ASM Vol. 60 (1967), p.723.

[14] Y.J. Su, Y. Bowing, and W.Y. Chu: Key Eng. Mater. Vol. 145-149 (1998), p.1053.

[15] A.P. Reynolds and E. Stoner: Metall. Trans. A Vol. 22 (1991), p.1849.

[16] J.F. Knott: Fundamentals of Fracture Mechanics (Butterworth, London 1974).

[17] R. F. Cook and Z. Suo: MRS Bulletin Vol. 27 (2002), p.45.

[18] W. Ludwig. E. Pereiro-Lopez and D. Bellet: Acta Mater. Vol. 53 (2005), p.151.

[19] W.M. Robertson: Trans. Met. Soc. AIME Vol. 236 (1966), p.1478.

[20] E. Pereiro-Lopez: Grain boundary penetration in the Al/Ga system: a synchrotron radiation X-Ray imaging investigation. PhD Thesis, (Institut National Polytechnic de Grenoble, Grenoble 2004).

[21] G. Hasson, J. -Y. Boos and I. Herbeuval: Surf. Sci. Vol. 31(1972), p.115.

[22] A. P Miedema and J. van Broeder: Z. Metallkde. Vol. 70 (1979), p.14.

[23] E. Rabkin: private communication.

[24] I. Kaur, W. Gust and L. Kozma, Handbook of Grain and Interphase Boundary Diffusion Data (Ziegler Press, Stuttgart 1989).

[25] E.D. Hondros and M.P. Seah: in: Physical Metalurgy, 3rd ed. R.W. Cahn and P. Haasen (eds. ), Vol. I (North-Holland Publ., Amsterdam 1983), p.855.

[26] D. Mc Lean: Mechanical Properties of Metals (John Wiley, New York 1963).

[27] B. Joseph, F. Barbier and M. Aucouturier: Mat. Sci. Forum Vol. 294-296(1999), p.735.

[28] K. Wolski, V. Laporte, N. Marie and M. Biscondi: Interface Sci. Vol. 9 (2001), p.183.

[29] W.W. Mullins: Trans. Metal. Soc. AIME Vol. 233 (1965) 1232.

[30] W.W. Mullins: Metallurgical and Materials Transactions A Vol. 26 (1995), p. (1917).

[31] B.C. Allen: Trans. Metal. Soc. AIME Vol. 236 (1966).

In order to see related information, you need to Login.