SciELO - Scientific Electronic Library Online

 
vol.111 issue3Nitriding of ilmenite and high-grade slag finesMonte Carlo simulation of Pt-Al thin film diffusion author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Journal of the Southern African Institute of Mining and Metallurgy

On-line version ISSN 2411-9717

J. S. Afr. Inst. Min. Metall. vol.111 n.3 Johannesburg  2011

 

TRANSACTION PAPER

 

Solidification of an Al-Zn alloy during semi-solid processing

 

 

S.L. George; R.D. Knutsen

Centre for Materials Engineering, Mechanical Engineering, University of Cape Town, Cape Town

 

 


SYNOPSIS

The semi-solid metal casting process results in a unique solidification path. The microstructural features that were identified during the characterization of the as-cast microstructure, were used as evidence of the process history in order to determine the solidification path followed during the evolution of the microstructure. The morphology of the grains was characterized using SEM and the extent and distribution of the elemental segregation within the grain structure was analysed using EDS.

Keywords: Semi-solid casting, solidification path, segregation


 

 

“Full text available only in PDF format”

 

 

References

CZERWINSKI, F. The basics of modern SSM processing, Journal of Metals (JOM), vol. 58, no. 6, June 2006, pp. 17-20.         [ Links ]

FAN, Z. and LUI, G. Solidification behaviour of AZ91D alloy under intensive forced convection in the RDC process, Acta Materialia, vol. 53, 2005, pp. 4345-4357.         [ Links ]

FAN, Z. Semi-solid metal processing, International Materials Review, vol. 47, no. 2, 2002. pp. 1-37.         [ Links ]

FLEMINGS, M.C. Behavior of metal alloys in the semisolid state, Metallurgical Transactions A, vol. 22A, May 1991, pp. 957-981.         [ Links ]

VOGEL, A., DOHERTY, R.D., and CANTOR, B. Stir-cast microstructure and slow crack growth, Solidification and Casting of Metals: Proceedings of an international conference on solidification, Sheffield Metallurgical and Engineering Association, University of Sheffield, 1977, pp. 518-525.         [ Links ]

DOHERTY, R.D., LEE, H.-L., and FEEST, E.A. Microstructure of stir-cast metals, Materials Science and Engineering, vol. 65, 1984, pp. 181-189.         [ Links ]

MULLIS, A.M. Growth induced dendritic bending and rosette formation during solidification in a shearing flow, Acta Materialia, vol. 47, no. 6, 1999, pp. 1783-1789.         [ Links ]

MOLENAAR, J.M.M., SALEMANS, F.W.H.C., and KATGERMAN, L. The structure of stircast Al-6Cu, Journal of Materials Science, vol. 20, 1985, pp. 4335-4344.         [ Links ]

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License