Naslov
Grain refining of Al-Si-X casting alloys and control of nucleation potential in foundries

Autori
Mrvar, Primož ; Petrič, Mitja ; Medved, Jožef ; Unkić, Faruk

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings book of 8th International Foundrymen Conference / Unkić, Faruk - Sisak : Metalurški fakultet Sveučilišta u Zagrebu, 2008, 20-2008

ISBN
978-953-7082-06-2

Skup
Development of Foundry Management and Technology

Mjesto i datum
Opatija, Hrvatska, 05.06.2008. - 07.06.2008

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Nije recenziran

Ključne riječi
grain refinement; modification; cooling rate; microstructure and physical model

Sažetak
This paper describes the influence of grain refiners, modifiers and cooling rate on microstructure of Al-Si alloys. Solidification of 239 (AlSi10Mg) and 226 (AlSi9Cu3) alloys has been investigated. Investigations have been made by &raquo ; in situ&laquo ; thermal analysis, simultaneous thermal analysis (STA) chemical analysis and metallographic analysis. Investigated alloys have been grain refined and modified. By cooling curves at different cooling rates the undercooling and recalescence of primary and eutectic crystallization have been detected and related with largeness of primary crystals of α Al and eutectic phase β Si from eutectic (α Al + β Si). The relation between largeness of microstructural constituents and cooling rate was determined with physical models as well.

Izvorni jezik
Engleski

Znanstvena područja
Metalurgija

POVEZANOST RADA