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A Quantitative Approach to Casting Solidification: Freezing of Cast Iron.

AD693718

Publication Date	1966
Personal Author	Oldfield, W.
Page Count	19
Abstract	The separate processes involved in casting solidification, such as eutectic nucleation and growth, have been previously studied separately in controlled experiments. The interaction of the separate processes has now been treated, using the freezing of cast-iron bars as the basis for a mathematical model. From the model, calculated cooling curves have been derived by means of a digital computer. The effect of sulfur on the freezing of cast-iron was studied by means of the model; published experimental cooling curves were duplicated by calculated curves after suitable choice of eutectic growth rate constants. The effect of primary dendrite solidification on the cooling curve has been indicated, together with a possible relationship between primary dendrites, nucleation, and casting strength. (Author)
Keywords	Castings Iron Freezing Mathematical models Nucleation Crystallization Eutectics Reaction kinetics Reprints Cast iron
NTIS Subject Category	71J - Iron & Iron Alloys 94G - Manufacturing Processes & Materials Handling
Corporate Authors	Stanford Univ Calif Dept Of Materials Science
Document Type	Journal Article
NTIS Issue Number	196922

A Quantitative Approach to Casting Solidification: Freezing of Cast Iron.

A Quantitative Approach to Casting Solidification: Freezing of Cast Iron.
AD693718

Publication Date	1966
Personal Author	Oldfield, W.
Page Count	19
Abstract	The separate processes involved in casting solidification, such as eutectic nucleation and growth, have been previously studied separately in controlled experiments. The interaction of the separate processes has now been treated, using the freezing of cast-iron bars as the basis for a mathematical model. From the model, calculated cooling curves have been derived by means of a digital computer. The effect of sulfur on the freezing of cast-iron was studied by means of the model; published experimental cooling curves were duplicated by calculated curves after suitable choice of eutectic growth rate constants. The effect of primary dendrite solidification on the cooling curve has been indicated, together with a possible relationship between primary dendrites, nucleation, and casting strength. (Author)
Keywords	Castings Iron Freezing Mathematical models Nucleation Crystallization Eutectics Reaction kinetics Reprints Cast iron
NTIS Subject Category	71J - Iron & Iron Alloys 94G - Manufacturing Processes & Materials Handling
Corporate Authors	Stanford Univ Calif Dept Of Materials Science
Document Type	Journal Article
NTIS Issue Number	196922