Model predictions of grain boundary chromium depletion in Inconel 690
作者： You Fa Yin , Roy G. Faulkner
DOI: 10.1016/J.CORSCI.2006.10.022
关键词: Grain boundary 、 Materials science 、 Inconel 、 Intergranular corrosion 、 Stress corrosion cracking 、 Thermodynamics 、 Zener diode 、 Diffusion (business) 、 Metallurgy 、 Grain size 、 Chromium
摘要: Abstract A new three dimensional modelling technique has been developed to predict chromium depletion from grain boundaries in Ni–Cr–Fe alloys. The is based on precipitation kinetics represented by the Zener’s Equation and error function solution of diffusion law. Unlike former models, model predicts a natural transition sensitization desensitisation time delay reaching minimum concentration at boundaries. In addition, whole prediction can be made using single Excel worksheet, therefore provides simple effective tool for sensitization/desensitisation predictions studies. Grain size effects temperature-time-concentration (TTC) maps also predicted. validated against experimental investigations reported literature Inconel 690 aged four temperatures different periods good agreement between observations achieved.
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John Crank, The mathematics of diffusion ,(1956)
H Sahlaoui, K Makhlouf, H Sidhom, J Philibert, Effects of ageing conditions on the precipitates evolution, chromium depletion and intergranular corrosion susceptibility of AISI 316L: experimental and modeling results Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. ,vol. 372, pp. 98- 108 ,(2004) , 10.1016/J.MSEA.2003.12.017
S. M. Bruemmer, Quantitative Modeling of Sensitization Development in Austenitic Stainless Steel CORROSION. ,vol. 46, pp. 556- 562 ,(1990) , 10.5006/1.3585149
RH Davies, AT Dinsdale, JA Gisby, JAJ Robinson, SM Martin, MTDATA - thermodynamic and phase equilibrium software from the National Physical Laboratory Calphad-computer Coupling of Phase Diagrams and Thermochemistry. ,vol. 26, pp. 229- 271 ,(2002) , 10.1016/S0364-5916(02)00036-6
J.J. Kai, C.H. Tsai, G.P. Yu, The IGSCC, sensitization, and microstructure study of Alloys 600 and 690 Nuclear Engineering and Design. ,vol. 144, pp. 449- 457 ,(1993) , 10.1016/0029-5493(93)90040-G
P. Lin, G. Palumbo, U. Erb, K.T. Aust, Influence of grain boundary character distribution on sensitization and intergranular corrosion of alloy 600 Scripta Metallurgica et Materialia. ,vol. 33, pp. 1387- 1392 ,(1995) , 10.1016/0956-716X(95)00420-Z
E.P. Butler, M.G. Burke, Chromium depletion and martensite formation at grain boundaries in sensitised austenitic stainless steel Acta Metallurgica. ,vol. 34, pp. 557- 570 ,(1986) , 10.1016/0001-6160(86)90091-X
J. J. Kai, C. H. Tsai, T. A. Huang, M. N. Liu, The effects of heat treatment on the sensitization and SCC behavior of INCONEL 600 alloy Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science. ,vol. 20, pp. 1077- 1088 ,(1989) , 10.1007/BF02650143
J.L. Hertzberg, G.S. Was, The effect of carbon on grain boundary diffusivity in Ni-16Cr-9Fe alloys Scripta Metallurgica et Materialia. ,vol. 33, pp. 1193- 1199 ,(1995) , 10.1016/0956-716X(95)00378-9
G.S. Was, R.M. Kruger, A thermodynamic and kinetic basis for understanding chromium depletion in Ni-Cr-Fe alloys Acta Metallurgica. ,vol. 33, pp. 841- 854 ,(1985) , 10.1016/0001-6160(85)90108-7