Multi-Scale Virtual Reality of Sintering

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Abstract:

The directions of further developments in the modeling of sintering are pointed out, including multi-scale modeling of sintering, on-line sintering damage criteria, particle agglomeration, sintering with phase transformations. A true multi-scale approach is applied for the development of a new meso-macro methodology for modeling of sintering. The developed macroscopic level computational framework envelopes the mesoscopic simulators. No closed forms of constitutive relationships are assumed for the parameters of the material. When a time-step of the calculations is finished for one macroscopic element, the mesostructures of the next element are restored from the initial state according to the history of loading. The model framework is able to predict the final dimensions of the sintered specimen on a global scale and identify the granular structure in any localized area for prediction of the material properties.

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Materials Science Forum (Volumes 534-536)

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573-576

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January 2007

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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[1] E. Olevsky and V. Skorohod, Some questions of sintering kinetics under external forces influence, in: Technological and construction plasticity of porous materials, 97-103 (1988).

Google Scholar

[2] E. Olevsky, V. Skorohod, and M. Shtern, Continuum theory of sintering of the porous bodies: Model and application, Int. J. Sci. Sinter., 23, 79-91 (1991).

Google Scholar

[3] E. A. Olevsky, Theory of sintering: From discrete to continuum, Materials Science & Engineering R-Reports, 23, 41-100 (1998).

DOI: 10.1016/s0927-796x(98)00009-6

Google Scholar

[4] J. Svoboda, H. Riedel, Pore-boundary interactions and evolution equations for the porosity and the grain size during sintering, Acta Metall., 40(11), 2829 (1992).

DOI: 10.1016/0956-7151(92)90448-n

Google Scholar

[5] A.C.F. Cocks, Overview No. 117. The structure of constitutive laws for the sintering of fine grained materials, Acta Metall., 42(7), 2191 (1994).

DOI: 10.1016/0956-7151(94)90299-2

Google Scholar

[6] E. A. Olevsky, V. Tikare, T. Garino, Multi-scale modeling of sintering - a review, J. Amer. Ceram. Soc. (2006) - in press.

Google Scholar

[7] R. M. McMeeking and L. T. Kuhn, A diffusional creep law for powder compacts, Acta Met. Mat., 40, 961-969 (1992) Fig. 4 Multi-scale modeling of sintering with an inclusion.

DOI: 10.1016/0956-7151(92)90073-n

Google Scholar