Theory of eutectic growth under rapid solidification conditions
Journal Article
·
· Acta Metall.; (United States)
The Jackson-Hunt model of eutectic growth at small undercoolings is extended to large undercooling values which are commonly encountered under rapid solidification conditions. The parameters, lambda/sup 2/V and lambda..delta..T, are found to deviate from constant values at high velocities, and these deviations depend upon the nature of the metastable phase diagram below the eutectic temperature. A limiting velocity is predicted for the formation of a regular, coupled eutectic structure, and the reason for this limiting velocity is shown to be either the temperature dependent diffusion coefficient or the limit of undercooling.
- Research Organization:
- Ames Lab. USDOE and Dept. of Materials Science and Engineering, Iowa State Univ., Ames, IA 50011
- DOE Contract Number:
- W-7405-ENG-82
- OSTI ID:
- 5678282
- Journal Information:
- Acta Metall.; (United States), Journal Name: Acta Metall.; (United States) Vol. 35:4; ISSN AMETA
- Country of Publication:
- United States
- Language:
- English
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