Mapping of the Granular Flow during the Irreversible Deformation Processes in Spatially Extended Polycrystalline Systems

Abstract:

The objective of this work is to obtain the mapping of the granular flow during the irreversible deformation processes in spatially extended polycrystalline systems (SEPCS) in order to describe and analyse the phenomenology and mechanics of the granular flow. In general, it was established for commercial alloys that, the granular flow is linked with the hyperbolic motion due to dislocation dynamics and self accommodation of grains. Also, the recession velocity of grains in the stain field on the surface of SEPCS increased with the distance along the tension axis from the origin of the coordinate system of reference. This behaviour is very similar to the Hubble flow associated with the expansion process of the universe, where the recession velocity of the galaxies increased in a linear relationship with their distance. In this physical framework the main results are analysed in the context of the unified interpretation of the Hubble flow, plastic flow and super plastic flow [1-6].

• Periodical: Materials Science Forum (Volumes 561-565)
• Pages: 901-904
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.561-565.901
• Online since: October 2007
• Authors: Juan Daniel Muñoz-Andrade
• Keywords: Dislocation Dynamics, Hubble Flow, Hyperbolic Flow, Mapping of the Granular Flow, Plastic Flow, Super Plastic Flow

References

[1] J. D. Muñoz-Andrade, Doctorate Thesis, Facultad de Ingeniería de la Universidad Central de Venezuela, Caracas, Venezuela, In revision for presentation.

DOI: 10.22209/rt.v42n3a01

[2] Juan Daniel Muñoz Andrade, On The Hyperbolic Flow Manifested During The Irreversible Deformation Processes In Spatially Extended Crystalline Systems, CP907, 10 th ESAFORM Conference on Material Forming, edited by E. Cueto and F. Chinesta, (2007).

DOI: 10.1063/1.2729691

[3] Juan Daniel Muñoz Andrade, On the Phenomenology and Mechanics of Super plastic flow in Advanced Structural Materials, ICSAM 2006, Materials Science Forum Vols. 551-552 (2006) pp.147-152.

DOI: 10.4028/www.scientific.net/msf.551-552.147

[4] J. D. Muñoz-Andrade, Proceedings of the 9 th ESAFORM Conference on Material Forming, Edited by Neal Juster and Andrzej Rosochowski, Glasgow, United Kingdom, Publishing House Akapit, Kraków, Poland (2006) pp.163-166.

[5] J. D. Muñoz-Andrade, Proceedings of the 8 th ESAFORM Conference on Material Forming, Editor: Prof. D. BANABIC, Cluj Napoca, Romania. The Publishing House of the Romanian Academy (2005) 603-606.

[6] J. D. Muñoz-Andrade, Superplasticity in Advanced Materials, ICSAM 2003, Edited by R. I. Todd, Mater. Sci. Forum Vols. 447-448 (2004) pp.85-90.

[7] J. D. Muñoz-Andrade, M. Sc. Thesis, Facultad de Ingeniería de la Universidad Central de Venezuela, Caracas, Venezuela (1996) 52-67, 74-117.

DOI: 10.22209/rt.v42n3a01

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