Rheological Behavior of Semisolid Al-6.5wt%Si Alloy under Cyclic Shear Deformation

Article Preview

Abstract:

In the present work, the MCF model for semisolid metal slurries (SSMS) is applied to investigate the thixotropy of the Al-6.5wt%Si alloy under cyclic shear deformation. The study shows that the semisolid Al-6.5wt%Si alloy has the behavior of thixotropy. The area of the hysteresis loop increases with decreasing the up-time, the initial shear rate and increasing resting time, solid volume fraction and maximum shear rate, respectively. These results have qualitative agreement with the experimental data. The origin of the hysteresis loop is atrributed to the difference between the deagglomeration rate and the agglomeration rate.

You might also be interested in these eBooks

Info:

Periodical:

Advanced Materials Research (Volumes 306-307)

Pages:

104-107

Citation:

Online since:

August 2011

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2011 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] M. Suéry, C.L. Martin, L. Salvo, in Proc. 4th Inter. Conf. on Semi-Solid Processing of Alloys and Composites, ed. by D. H. Kirkwood, P. Kapranos, The University of Sheffield, 1996: p.21.

Google Scholar

[2] J.Y. Chen, Z. Fan, Modelling of the rheological behavior of semisolid slurries, Part I: The theory, Mat. Sci. Tech. 18 (2002) 237-242.

Google Scholar

[3] Z. Fan, J.Y. Chen, Modelling of the rheological behavior of semisolid slurries, Part II: The steady state behaviour, Mat. Sci. Tech. 18 (2002) 243-249.

DOI: 10.1179/026708301225000680

Google Scholar

[4] J.Y. Chen, Z. Fan, Modelling of the rheological behavior of semisolid slurries, Part III: The transient state behavior, Mat. Sci. Tech. 18 (2002) 250-257.

DOI: 10.1179/026708301225000671

Google Scholar

[5] Z. Fan, J.Y. Chen, Modelling of the rheological behavior of semisolid slurries, Part IV: The effect of particle morphology, Mat. Sci. Tech. 18 (2002) 258-267.

DOI: 10.1179/026708301225000699

Google Scholar

[6] H.C. Luo, W. Wang, E.S. Xu and L.P. Ju: submitted to 1st Inter. Cong. on Advanced Materials, 2011.

Google Scholar

[7] P.A. Joly, R. Mebrabian, The rheology of a partially solid alloy, J. Mater. Sci. 11(1976) 1393-1418.

Google Scholar

[8] C.L. Martin, P. Kumar and S. Brown, Constitutive modeling and characterization of the flow behavior of semi-solid metal alloy slurries–II.Structural evolution under shear deformation, Acta Metall. Mater. 42(1994) 3603-3614.

DOI: 10.1016/0956-7151(94)90427-8

Google Scholar