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| INFLUENCE OF EXTERNAL FORCE ON CARBON DIFFUSION DURING METAL DUSTING CORROSION |
| YANG Xiaobin1,2, TU Shandong1 |
1. School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237
2. School of Mechanical & Electrical Engineering, Changzhou Institute of Technology, Changzhou 213002 |
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Abstract Metal dusting corrosion is a disintegration of metallic materials, which is dependent on carbon activity and pressure of atmosphere, temperature of circumstance, alloying component and so on. Diffusion of carbon into metal such as Fe, Ni and Co and their alloys plays a key role, meanwhile, external loading is an important factor. A brief discussion about coupling models of mechanics-chemical is made in the present work. Activity volume model is used to investigate the influence of external force on carbon diffusion. The results show that tensile stress promotes diffusion of carbon into metal, while compressive stress restrains it into metal.
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Received: 16 July 2010
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| [1] Grabke H J. Metal dusting [J]. Mater.Corros., 2003, 54: 736-746[2] Szakalos P. Mechanisms and drivingforces of metal dusting [J]. Mater. Corros.,2003, 54: 752-762[3] Pippel E, Woltersdorf J, Schneider R.Micromechanism of metal dusting on Fe-base and Ni-base alloys [J]. Mater. Corros., 1998, 49: 309-316[4] Dampc J, Grzesik Z, Hucinska J. Metal dusting in CCR platforming unit [J]. Mater. Corros.,2009, 60: 211-217[5] Maier M, Norton J F, Frampton P D. Metal dusting of 9-20% Cr steels in increased pressure environments at 560℃ [J]. Mater. Corros.,1998, 49: 330-335[6] Hermse C G M, Van Wortel J C. Metal dusting: relationship between alloy composition and degradation rate [J]. Corros. Eng. Sci.Technol., 2009, 44: 182-185[7] Hu G M, Zhou C Y, Chen C, et al. Finite element simulation for internal stress of metal dusting corrosion layer [J]. J. Jiangsu Univ.(Nat. Sci. Ed.), 2009, 30: 582-586 (胡桂明，周昌玉，陈成等. 金属尘化腐蚀层内应力的有限元模拟计算 [J]. 江苏大学学报（自然科学版），2009，30：582-586)[8] Rosenband V, Gany A. Stress analysis for the high-temperature gaseous corrosion of metal tubes [J]. Corros. Sci., 1995, 37: 1991-2001[9] Xu T, Tu S T, Song H J, et al. Pure bending testing of Cr-Mo alloy in metal dusting condition [J]. Key Eng. Mater., 2007,353-358: 341-344[10] Suo Z, Kubair D V, Evans A G et al. Stresses induced in alloys by selective oxidation [J]. Acta Mater., 2003, 51: 959-974[11] Wu C H. The role of Eshelby stress in composition-generated and stress-assisted diffusion [J]. J. Mech. Phys. Solids,2001, 49: 1771-1794[12] Beke D L, Szabo I A, Erdelyi Z, et al. Diffusion-induced stresses and their relaxation [J].Mater. Sci. Eng., 2004, 387-389: 4-10[13] Aziz M J. Thermodynamics of diffusion under pressure and stress: relation to point defect mechanisms [J]. Appl. Phys. Lett.,1997, 70(21): 2810-2812[14] Schneider A, Inden G. Carbon diffusion in cementite (Fe3C) and Hagg carbide (Fe5C2) [J]. Comput. Coup. Phase Diagrams Thermochem., 2007, 31: 141-147[15] Levcheno E V, Evttenv A V, Belova I V, et al. Molecular dynamics simulation and theoretical analysis of carbon diffusion in cementite [J]. Acta Mater., 2009, 57: 846-853[16] Aoyagi M. Analysis of atomic diffusion mechanism of interconnect voiding failure caused by stress-induced migration [J]. J. Vac. Sci.Technol., 2006, 34(3): 1254-1258[17] Seo D, Ogawa K, Nakao Y, et al. Influence of high-temperature creep stress on growth of thermally grown oxide in thermal barrier coatings [J]. Surf.Coat. Technol., 2009, 203: 1979-1983[18] Sofronis P. The influence of mobility of dissolved hydrogen on the elastic response of a metal [J]. J. Mech. Phys. Solids, 1995,43: 1385-1407\par |
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