ENGLISH
La vitrine de diffusion des publications et contributions des chercheurs de l'ÉTS
RECHERCHER

A comparative study of grain refining of Al-(7–17%) Si cast alloys using Al-10% Ti and Al-4% B master alloys

Téléchargements

Téléchargements par mois depuis la dernière année

Plus de statistiques...

Samuel, Agnes M., Samuel, Ehab, Songmene, Victor et Samuel, Fawzy H.. 2023. « A comparative study of grain refining of Al-(7–17%) Si cast alloys using Al-10% Ti and Al-4% B master alloys ». Materials, vol. 16, nº 7.
Compte des citations dans Scopus : 1.

[thumbnail of Songmene-V-2023-26524.pdf]
Prévisualisation
PDF
Songmene-V-2023-26524.pdf - Version publiée
Licence d'utilisation : Creative Commons CC BY.

Télécharger (10MB) | Prévisualisation

Résumé

The present article addresses solidification parameters, and includes analyses of the macrostructure and microstructure in the light of the results obtained from the thermal analysis, from which it is possible to conclude that undercooling (TS) and recalescence (TR) temperatures increase with the initial increase in titanium (Ti) concentration. If the concentration reaches approximately 0.25%, a rapid decrease in these temperatures is observed. Thereafter, the temperatures increase again with the further increase in Ti concentration, and eventually become constant. These temperatures also vary depending on the superheating and casting temperature. The ∆T parameter (i.e., TS − TR) decreases with the Ti concentration and, from a concentration of around 0.20% Ti, this parameter becomes zero. The grain size decreases with the Ti concentration. If the concentration exceeds about 0.20%, the grain size becomes the minimum. Another parameter to be considered is the interaction between the grain refiner and the traces of other metals in the base Al alloy. For example, Al-4%B can react with traces of Ti that may exist in the base alloy, leading to the reaction between boron (B) and Ti to form TiB2. Grain refinement is achieved primarily with TiB2 rather than AlB2, or both, depending on the Ti content in the given alloy.

Type de document: Article publié dans une revue, révisé par les pairs
Professeur:
Professeur
Songmene, Victor
Affiliation: Génie mécanique
Date de dépôt: 30 mai 2023 21:12
Dernière modification: 31 mai 2023 15:11
URI: https://espace2.etsmtl.ca/id/eprint/26524

Actions (Authentification requise)

Dernière vérification avant le dépôt Dernière vérification avant le dépôt