- Tytuł:
- Effect of Titanium Addition on the Pro-Eutectic and Eutectic Phases of AlSi9 Cast Alloy
- Autorzy:
-
Ait El Haj, Badiâ
Bouayad, Aboubakr
Alami, Mohammed - Powiązania:
- https://bibliotekanauki.pl/articles/353725.pdf
- Data publikacji:
- 2020
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
AlSi9 cast alloy
grain refinement
thermal analysis
eutectic phase
Secondary Dendrite Arm Spacing
SDAS - Opis:
- In this study, the effects of grain size refiner addition and various pre-heating mold temperatures on AlSi9 cast alloy microstructure and solidification have been evaluated. For different process conditions, thermal analysis was performed for all samples and cooling curves were established. Important parameters in liquidus and eutectic Si-phase regions have been calculated usingthe first derivative cooling curves. Secondary Dendrite Arm Spacing (SDAS) variation was also determined. Experimental results question the effectiveness of cooling curve parameters in providing the microstructure data as a function of refinement. The present work shows that the effect of grain refiner addition on the value of SDAS was higher when the solidification time was lower. It indicated that the solidification parameters such as nucleation temperatures of α-Al phase, undercooling temperature and total solidification time were affected by grain refinement. It has been found that the addition of grain refiner affect the eutectic phase formation time. However, it has no effect on the eutectic phase morphology.
- Źródło:
-
Archives of Metallurgy and Materials; 2020, 65, 1; 385-391
1733-3490 - Pojawia się w:
- Archives of Metallurgy and Materials
- Dostawca treści:
- Biblioteka Nauki
Artykuł