PSI - Issue 13

Lenka Kuchariková et al. / Procedia Structural Integrity 13 (2018) 1577–1582 Lenka Kuchariková / Structural Integrity Procedia 00 (2018) 000 – 000

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 The fracture surface consists of the trans-crystalline cleavage and ductile fractures. The former are dominant in both states of the experimental material (AS, T6). They are related to the presence of large hexagonal plates - Si particles and the brittle Fe-rich intermetallic phases (platelets and skeleton-like). The latter is observed for the Al matrix (  -phase - in the smaller areas) and for the Cu intermetallic phases, as well.  The study shows great influence of microstructural features morphology onto the fracture behaviour of aluminium cast alloys. It is therefore necessary to study the composition of the secondary aluminium alloys in order to cast the best product for automotive and aerospace industry applications.

Acknowledgements

This work has been supported by the grant projects N o 1/0533/15 and EU project ITMS 26220220154.

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