Recent advances in understanding the eutectic solidification in Al-Si foundry alloys


Autoria(s): Lu, L.; Dahle, A. K.; Cooper, P.; Couper, M. J.
Contribuinte(s)

Peter Whiteley

Data(s)

01/01/2003

Resumo

The formation of the Al-Si eutectic is generally the final stage of the solidification process of Al-Si foundry alloys. This means that it can be expected to have a significant impact on the feeding of a casting, and consequently the formation of casting defects, in particular porosity. Understanding and controlling the eutectic solidification process are therefore very important. This paper reviews the recent advances and unique techniques used in improving our understanding of both eutectic nucleation and growth. The role of different modifiers in controlling the eutectic solidification mechanisms is presented and the relationship between eutectic solidification mechanisms and porosity formation is outlined. This new approach to aluminium foundry alloy metallurgy is likely to form the basis for further optimisation of alloy performance and master alloys for the future.

Identificador

http://espace.library.uq.edu.au/view/UQ:99891

Idioma(s)

eng

Publicador

Minerals, Metals & Materials Society

Palavras-Chave #E1 #291302 Physical Metallurgy #671004 Castings
Tipo

Conference Paper