Author details

Gerhard Huber<sup>1</sup> , Mile B. Djurdjevic<sup>1</sup> and Srećko Manasijević<sup>2</sup> \*

1 Nemak Linz GmbH, Linz, Austria

2 Lola Institute Ltd, Belgrade, Serbia

\*Address all correspondence to: srecko.manasijevic@li.rs

© 2019 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

(from 5 to 9 wt.%) and Cu (from 0 to 4 wt.%) significantly dropped down the amount of fraction solid at TRigidity, while the amount of fraction solid at DCT is slightly reduced. Besides chemical compositions, it is well known that other parameters have also been identified to affect the feeding capability of aluminum alloys [35–43]. Among these are melt superheat, temperature gradients during solidification, the influence of chemical composition, eutectic modification, grain refinement and hydrogen solubility. All these factors need to be taken into consideration in order to be able to properly answer which feeding region is more significant for the formation of cast defects. The correct answer could only be achieved if additional experimental techniques were introduced, such as the Tatur test sample, the measurement of the collecting temperature and the Hubler test sample, in addition to the thermal analysis. This paper has shown that applying cooling curve analysis to

The impact of Si on the fraction solid: (a) Al-(5, 7, 9)Si-0Cu (wt%), (b) Al-(5, 7, 9)Si-1Cu (wt%), (c) Al-(5, 7, 9)Si-2Cu (wt%), (d) Al-(5, 7, 9)Si-3Cu (wt%) and (e) Al-(5, 7, 9)Si-4Cu (wt%) alloys at

Figure 4.

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the characteristic solidification temperatures.

Mass Production Processes
