Effect of heat treatment on fracture surfaces in recycled aluminium cast alloy

Authors

  • Lenka Hurtalová
    Affiliation

    University of Žilina, Faculty of Mechanical Engineering, Department of Materials Engineering

  • Eva Tillová
    Affiliation

    University of Žilina, Faculty of Mechanical Engineering, Department of Materials Engineering

  • Mária Chalupová
    Affiliation

    University of Žilina, Faculty of Mechanical Engineering, Department of Materials Engineering

https://doi.org/10.3311/PPtr.7111

Abstract

Recycled AlSi9Cu3 cast alloy was heat treated by solution treatment at temperature 515 °C (4 hours), quenched and artificial aged at temperatures 130 °C,  170 °C and 210 °C (2, 4, 8, 16 and 32 hours). Heat treatment led to spheroidization of eutectic Si, gradual disintegration, shortening and thinning of Fe-rich intermetallic phases, the dissolution of Cu-rich phases and the precipitation of finer hardening phase (Al2Cu). The change of morphology of structural components significantly affects the fracture surface of Al-alloy. The fracture morphology changes gradually from dominant brittle transcrystalline cleavage fracture to ductile fracture with numerous small dimples (locally presence the cleavage fractures of Fe-rich phases).

Keywords:

recycled aluminium alloys; fracture surfaces; structural parameters; mechanical properties

Published Online

2014-02-11

How to Cite

Hurtalová, L., Tillová, E., Chalupová, M. (2013) “Effect of heat treatment on fracture surfaces in recycled aluminium cast alloy”, Periodica Polytechnica Transportation Engineering, 41(2), pp. 117–122. https://doi.org/10.3311/PPtr.7111

Issue

Section

Articles