IMPACT OF PLASTIC DEFORMATION ON THE PROPERTIES OF A SELECTED ALUMINIUM ALLOY

Authors

  • Anna Lišková Technical Univerzity in Košice Faculty of Metallurgy Institute of Materials http://orcid.org/0000-0003-1609-2264
  • Petra Lacková Technical Univerzity in Košice Faculty of Metallurgy Institute of Materials
  • Mária Mihaliková Technical Univerzity in Košice Faculty of Metallurgy Institute of Materials
  • Róbert Kočiško Technical Univerzity in Košice Faculty of Metallurgy Institute of Materials

DOI:

https://doi.org/10.14311/AP.2016.56.0353

Keywords:

severe plastic deformation, aluminium alloy, tensile test

Abstract

This paper reports on an experiment to assess the influence of plastic deformation on the microstructure and properties of EN AW 6012 (AlMgSiPb) aluminium alloy in two states. The first was the initial state with heat treatment T3, and the second was the state after intensive plastic deformation by ECAP (Equal Channel Angular Pressing) technology. The ECAP process was carried out repeatedly at room temperature. In the initial state of the alloy, the process redistributed eutectic Si-particles and increased the strength of the alloy. The mechanical properties and the hardness increased due to intensive plastic deformation (the yield strength increased by 15%, the tensile strength by 6%, and the hardness by 23%). The fracture cracks initiated and propagated mainly along eutectic particles. The fracture area of the ECAPed specimen displayed a typical ductile cavity characteristic.

Downloads

Download data is not yet available.

Author Biographies

  • Anna Lišková, Technical Univerzity in Košice Faculty of Metallurgy Institute of Materials

    Ing. Anna Lišková

    PhD student

  • Petra Lacková, Technical Univerzity in Košice Faculty of Metallurgy Institute of Materials

    Ing. Petra Lacková

    PhD. student

  • Mária Mihaliková, Technical Univerzity in Košice Faculty of Metallurgy Institute of Materials

    doc. Ing. Mária Mihaliková, PhD.

    docent, vice dean

  • Róbert Kočiško, Technical Univerzity in Košice Faculty of Metallurgy Institute of Materials

    Ing. Róbert Kočiško, PhD.

    assistant

Downloads

Published

2016-10-31

Issue

Vol. 56 No. 5 (2016)

Section

Articles

License

Authors who publish with this journal agree to the following terms:

1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.

2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.

3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).

4. ddd

How to Cite

Lišková, A., Lacková, P., Mihaliková, M., & Kočiško, R. (2016). IMPACT OF PLASTIC DEFORMATION ON THE PROPERTIES OF A SELECTED ALUMINIUM ALLOY. Acta Polytechnica, 56(5), 353-359. https://doi.org/10.14311/AP.2016.56.0353