Original scientific paper

The influence of alloying elements in aluminium on the grain refinement with ALTI5B1

Naglič I. ; Institute of Metals and Technology, Ljubljana, Slovenia
Smolej A. ; University of Ljubljana, Faculty of Natural Sciences and Engineering, Ljubljana, Slovenia
Doberšek M. ; Institute of Metals and Technology, Ljubljana, Slovenia

Abstract

This work deals with the influence of alloying elements in aluminium on the grain refinement with various additions of AlTi5B1. Grain-refinement tests were made at a cooling rate of 15 °C/s. The results revealed that in both aluminium and an Al-Fe alloy the grain size decreases with increasing additions of the AlTi5B1 grain refiner. We found that for the same boron content the grain size was smaller in the case of the Al-Fe alloy. The difference in the grain sizes for the same content of boron was approximately 15 μm; this is considerably smaller than the difference between the grain sizes in samples with the same difference of growth-restricting factor made at slower cooling rates.

Keywords

aluminium; casting; solidification; grain refinement

Hrčak ID:

35467

URI

https://hrcak.srce.hr/35467

Publication date:

1.7.2009.

Article data in other languages: croatian

Visits: 1.339 *