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A Unified Phenomenological Model for Superplastic Materials
Technical Paper
2008-01-1096
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Superplastic properties of an aluminum alloy, AA7475 were studied experimentally and simulated by a micromechanically based phenomenological model. The superplastic behavior was studied and predicted at different strain rate and temperature. The model assumes that the total deformation is the result of a composite interaction of grain boundary sliding accommodated by matrix deformation (dislocation climb and glide). Hart's constitutive equations for inelastic deformation of polycrystalline materials are used to represent matrix deformation. The grain boundary sliding is represented through a linear viscous equation originally proposed by Ashby-Verrall. The analysis shows that the Hart's model for high temperature climb processes together with grain boundary sliding can predict the superplastic deformation from the very low to moderately high strain rates.
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Citation
Garmestani, H. and Li, D., "A Unified Phenomenological Model for Superplastic Materials," SAE Technical Paper 2008-01-1096, 2008, https://doi.org/10.4271/2008-01-1096.Also In
References
- Ghosh, A. K. Hamilton, C. H. 1982 Influence of Material Parameters and Microstructure on Superplastic Forming Metall. Trans. 13A 733 743
- Kashayap, B. P. Arieli, A. Mukherjee, A. K. 1985 Review of microstructural aspects of superplasticity Journal of Materials Science 20 2661 2686
- Kashyap, B. P. Mukherjee, A. K. “On the models for superplastic deformation.” International comnference on superplasticity- Grenoble, Paris
- Langdon, T. G. 1991 The Physics of Superplastic Deformation Materials Science and Engineering A137 1 11
- Mukherjee, A. K. 1979 Deformation Mechanisms In Superplasticity Annual Review Material Science 9 191 217
- Astanin, V. V. Faizova, S. N. Padmanabhan, K. A. 1996 Model for Grain Boundary Sliding and Its Relevance to Optimal Structural Superplasticity Mater. Sci. and Tech. 12 489
- Langdon, T. G. 1994 A Unified Approach to Grain Boundary Sliding in Creep and Superplasticity Acta Metallurgica 42 7 2437 2443
- Sheikh-Ali, A. D. 1997 On the Contribution of Extrinsic Grain Boundary Dislocations to Grain Boundary Sliding in Bicrystals Acta mater. 45 3109
- Ashby, M. F. Verrall, R. A. 1973 Diffusion-Accomodated Flow and Superplasticity Acta Metallurgica 21 February 149 163
- Ghosh, A. K. 1980 A Physically Based Constitutive Model for Metal Deformation Acta Metallurgica 28 1443 1465
- Gittus, J. H. 1977 The Mechanical Equation of State Trans. ASME, J. Eng. Mater. Tech. 99 221 243
- Higashi, K. Matsumura, Y. Tanimura, S. 1993 Determination of constitutive equation of superplstic deformation by incorporation of temperature dependence of grain size Nippon Kikai Gakkai Ronbunshu, A Hen/Transaction of the Japan Society of Mechanical Engineers 59 563 1669 1675
- Mukherjee, A. K. 1975 Grain Boundaries in Engineering Materials Walter J. L. Claitor Publishing Baton Rouge, LA 93
- Suery, M. Blandin, J. J. Dendievel, R. 1994 Rheological Behaviour of Two Phase Superplastic Materials Materials Science Forum 170 172 167 176
- Taleff EM Green WP Kulas MA et al. 2006 Analysis, representation, and prediction of creep transients in Class I alloys Mater Sci & Eng A 410A 32 39
- Baudelet, B. Lian, J. 1995 Composite model for superplasticity Journal of Materials Science 30 8 1977 1981
- Baudelet, B. Suery, M. 1972 J. Mater. Sci. 7 512
- Booeshaghi, F. Garmestani H. 1998 On the Application of Load Relaxation in Characterizing Superplastic Al-Li 8090 Over Large Strain-Rate Regimes Scripta Materialia
- Garmestani, H. Kalu, P. 1995 “Microcharacterization of Al-8090 Superplastic Materials Using Orientation Imaging Microscopy.” Light Structural Alloys of The Materials Society
- Garmestani, H. Kalu, P. N. Booeshaghi, F. 1997 Micromechanical Investigation and Phenomenological Modeling of AL-8090 Superplastic Materials Materials Science Forum 243 245 569 574
- Hart, E. W. 1967 A Theory For Flow of Polycrystals Acta Metallurgica 15 September 1545 1549
- Ashby, M. F. Verrall, R. A. 1973 Diffusion-Accomodated Flow and Superplasticity Acta Metallurgica 21 February 149 163
- Booeshaghi, F. Garmestani, H. 1998 On the Existence of Threshold Stress Scripta Materialia 38 1 89 94
- Garmestani, H. Kalu, P. Dingley, D. 1998 Micro-characterization of Al-8090 Superplastic Materials using Orientation Imaging Microscopy Journal of Materials Science and Engineering A. 242 1-2 February 284 291
- Kulas MA Green WP Taleff EM et al. 2005 Deformation mechanisms in superplastic AA5083 materials Metallurgical and Materials Transactions 36A 1249
- Zelin, M. G. Krasilnikov, N. A. Valiev, R. Z. Grabski, M. V. H.S., Y. Mukherjee, A. K. 1994 Microstructural Aspects of the Nonhomogeneity of Superplastic Deformation at the Level of Grain Groups Acta Metall. Mater. 42 119
- Zelin, M. G. Mukherjee, A. K. 1995 Cooperative Phenomena at Grain Boundaries during Superplastic Flow Acta Metall. Mater. 43 2359
- Raj, R. Ashby, M. F. 1971 On Grain Boundary Sliding and Diffusional Creep Metallurgical Transactions 2 1113
- Hart, E. W. 1976 Constitutive relations for the nonelastic deformation of metals Journal of Engineering Materials and Technology 98 193 202
- Hart, E. W. 1984 A Micromechanical Basis Constitutive Equations with Internal State Variables Journal of Engineering Materials and Technology 106 322 325
- Booeshaghi, F. 1997 Phenomenological Modeling Based on Micromechanical Investigation of Superplastic Materials, PhD Dissertation Florida State University Tallahassee, FL