Controlled Temperature Distribution and Heat Transfer Process in the Unidirectional Solidification of Aluminium Alloys
| Periodical | Solid State Phenomena (Volume 188) |
|---|---|
| Main Theme | Advanced Materials and Structures IV |
| Edited by | Mircea Nicoară, Aurel Răduţă and Carmen Opriş |
| Pages | 314-317 |
| DOI | 10.4028/www.scientific.net/SSP.188.314 |
| Citation | Florin Ştefănescu et al., 2012, Solid State Phenomena, 188, 314 |
| Online since | May, 2012 |
| Authors | Florin Ştefănescu, Gigel Neagu, Alexandrina Mihai, Iuliana Stan |
| Keywords | Aluminum Alloy, Controlled Heat Transfer, Directional Solidification, Unidirectional Crystallization |
| Price | US$ 28,- |
Abstract. The paper presents some theoretical and experimental data regarding the directional solidification, revealing the main factors (especially those which are related to the heat transfer process) which have influence on the crystals size and morphology. The crystalline structure of alloys is determined by three important factors: chemical composition, thermal conditions, and characteristics of germination and growth from liquid of solid nuclei. The solidification structure can be influenced by acting on the mould properties or directly on the cast material, both of these actions being based upon the change of temperature distribution in the alloy-mould system. Experimental data demonstrated the major influence of the thermal regime on the crystallization-solidification process, on the transcrystallization zone and they pointed out the limits to direct the crystals formation (size and shape) by changing the cooling regime.
