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- Title
ANALYSIS OF PHASE TRANSFORMATION IN HIPOEUTECTIC Al-Si ALLOYS.
- Authors
Lichioiu, I.; Varga, B.; Geamăn, V.
- Abstract
Measurement of temperature and transformation duration provides information on structure generation. Improving the structure of hypoeutectic Al-Si alloys can be achieved both by introducing small quantities of additives and by applying high cooling rates. Dilatometric studies allowed determination of activation energy for the decomposition of supersaturated solid solution. Increased cooling rates cause an increase of the activation energy from a value of 152 kJ/mol for casting in refractory brick to a value of 201 kJ/mol for casting in steel mould in case of ATSi5Cu1 alloy.
- Subjects
TEMPERATURE measurements; PHASE transitions; ALUMINUM alloys; SILICON alloys; ACTIVATION energy; CHEMICAL decomposition
- Publication
Bulletin of the Transilvania University of Brasov, Series I: Engineering Sciences, 2010, Vol 3, Issue 52, p189
- ISSN
2065-2119
- Publication type
Article