Abstract
This paper is concerned with a recent microstructural approach to model creep crack growth. The model spans three different length scales, from the scale of individual cavities, through the grain scale up to the macroscopic scale of cracks in components and test specimens. In order to study the initial stages of creep crack growth, we consider a near-tip process window in which a large number of grains is represented discretely. This window is surrounded by a standard continuum. Macroscopic specimen dimensions and loading configuration are communicated to this near-tip region by applying boundary conditions in accordance with higher-order asymptotic stress fields for power-law creeping materials. The paper presents an overview of some recent results obtained with this type of modeling.
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References
Chao, Y.J. and Zhang, L. (1997), Tables of plane strain crack tip fields: HRR and higher order terms. ME-Report 97–1, University of South Carolina.
Dyson, B.F. (1976), Constraints on diffusional cavity growth rates, Metal Sci. 10, 349–353.
Dyson, B.F. and McLean, D. (1977), Creep of Nimonic 80A in torsion and tension. Metal Sci. 11, 37–45.
Ghahremani, F. (1980), Effect of grain boundary sliding on steady creep of polycrystals. Int. J. Solids Struct.16, 847–862.
Gooch D.J., Haigh J.R., King B.L. (1977), Relationship between engineering and metallurgical factors in creep crack growth. Met. Sci. 11, 545–550.
Hayhurst, D.R., P.R. Brown and C.J. Morrison (1984), The role of continuum damage in creep crack growth, Phil. Trans. Roy. Soc. Lond. A311, 131–158.
Needleman, A. and J.R. Rice (1980), Plastic creep flow effects in the diffusive cavitation of grain boundaries, Acta Metall. 28, 1315–1332.
Nguyen, B.-N., P.R. Onck and E. Van der Giessen (2000a), On Higher-Order Crack-Tip Fields in Creeping Solids, J. Appl. Mech. in print.
Nguyen, B.-N., P.R. Onck and E. Van der Giessen (2000b), Crack-tip Constraint Effects on Creep Fracture, Engng Fract. Mech. 65, 467–490.
Onck P.R. and Van der Giessen E. (1997), Microstructurally-based Modelling of inter-granular creep fracture using grain-elements, Mech. Mater. 26, 109–126.
Onck, P.R. and Van der Giessen, E. (1998a), Microstructural modelling of creep crack growth from a blunted crack. Int. J. Frac. 92, 373–399.
Onck, P.R. and Van der Giessen, E. (1998b), Numerical simulation of grain-size effects on creep crack growth by means of grain elements. J. Phys. IV France, 8, 285–292.
Onck, P.R. and Van der Giessen, E. (1999), Growth of an initially sharp crack by grain boundary cavitation. J. Mech. Phys. Solids, 47, 99–139.
Ozmat, B., Argon, A.S.and Parks, D.M. (1991), Growth modes of cracks in creeping type 304 stainless steel. Mech. Mater. 11, 1–17.
Riedel, H. (1987), Fracture at high temperatures. Materials Research and Engineering Series, Springer-Verlag.
Sham, T.-L and A. Needleman (1983), Effects of triaxial stressing on creep cavitation of grain boundaries, Acta Metall. 31, 919–926.
Shih, C.F. (1983), Tables of HRR Singular Field Quantities, Report MRL E-147, Materials Research Laboratory, Brown University, Providence
Tvergaard, V. (1984), On the creep constrained diffusive cavitation of grain boundary facets, J. Mech. Phys. Solids32, 373–393.
Tvergaard, V. (1986), Analysis of creep crack growth by grain boundary cavitation, Int. J. Fract.31, 183–209.
Van der Giessen, E. and V. Tvergaard (1991), A creep rupture model accounting for cavitation at sliding grain boundaries, Int. J. Fract.48, 153–178.
Yang, S., Y.J. Chao and M.A. Sutton (1993), Higher Order Asymptotic Crack Tip Fields in a Power-law Hardening Material, Engng Fract. Mech., Vol.45, 1–20.
Zhu S.M., Wang F.G., Zhu S.J. (1993), Grain size dependence of creep crack growth in Ni-Cr austenitic steels, Mater. Trans. JIM 34, 450–454.
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Onck, P.R., Nguyen, BN., Van Der Giessen, E. (2001). Microstructural Modeling of Creep Fracture in Polycrystalline Materials. In: Murakami, S., Ohno, N. (eds) IUTAM Symposium on Creep in Structures. Solid Mechanics and its Applications, vol 86. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-9628-2_6
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DOI: https://doi.org/10.1007/978-94-015-9628-2_6
Publisher Name: Springer, Dordrecht
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