Equations for nucleation of hydrogen gas pores during solidification of aluminium seven weight percent silicon alloy

Journal Article · Fri Nov 19 00:00:00 EST 1999 · Scripta Materialia

DOI:https://doi.org/10.1016/S1359-6462(99)00297-3· OSTI ID:20006427

Atwood, R C; Sridhar, S; Lee, P D

Producing metallic parts for aerospace and automotive industries in as-cast shapes is both less expensive and faster than many competitive manufacturing techniques. However, the occurrence of casting defects such as porosity limits the use of cast parts especially in high tolerance applications. In this work an empirical approach is followed to produce useable equations that reproduce the behavior of the material and which may then and in predicting the formation of gas porosity within solidification models. The approach of Charbon and Rappaz for grain nucleation during solidification is used to provide the form of the equations. Some possible explanations of the observed behavior are also presented.

• Research Organization: Imperial Coll. of Science, Technology and Medicine, London (GB)
• OSTI ID: 20006427
• Journal Information: Scripta Materialia, Vol. 41, Issue 12; Other Information: PBD: 19 Nov 1999; ISSN 1359-6462
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
SOLIDIFICATION
POROSITY
ALUMINIUM ALLOYS
SILICON ALLOYS
COMPUTERIZED SIMULATION
HYDROGEN
NUCLEATION
TEMPERATURE DEPENDENCE
EXPERIMENTAL DATA