Abstract
The characteristics of some selected melt quenching processes to produce continuous ribbons or tapes was discussed.
To understand the process physics and to quantify the effects of process variables on ribbon geometry and as-quenched microstrueture mathematical models have been formulated. Because ribbon formation is a complex process it is difficult to give an accurate (mathematical) description. Therefore empirical correlations have been established between process variables and ribbon gecmetiry or the occurrence of geometrical defects.
In the mathematical models both fluid and heat transfer aspects are considered and the ribbon formation is characterized by the propagation of the thermal and momentum boundary layers.
The existing models only successfully describe the experimental observations to a limited extent. A rigorous mathematical model of these processes, including the development of the as-quenched microstrueture, requires quantitative descriptions of solute redistribution and nucleation and growth of alloys at high quench rates taking into account the various thermodynamic and kinetic factors.
Difficulties and limitations in incorporating these effects in the mathematical models will be discussed.
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© 1986 Martinus Nijhoff Publishers, Dordrecht
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Katgerman, L. (1986). Continuous Products in Rapid Solidification. In: Sahm, P.R., Jones, H., Adam, C.M. (eds) Science and Technology of the Undercooled Melt. Nato Asi Series, vol 114. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-4456-5_8
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DOI: https://doi.org/10.1007/978-94-009-4456-5_8
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