Influence of Thermomechanical Treatment on Tension-Compression Yield Asymmetry of Extruded Mg-Zn-Ca Alloy

0504480 - ÚJF 2020 RIV CH eng C - Conference Paper (international conference)
Dobroň, P. - Hegedüs, M. - Olejňák, J. - Drozdenko, D. - Fekete-Horváth, Klaudia - Bohlen, J.
Influence of Thermomechanical Treatment on Tension-Compression Yield Asymmetry of Extruded Mg-Zn-Ca Alloy.
THE MINERALS, METALS AND MATERIALS SERIES. Vol. 2019. Cham: Springer, 2019, s. 77-81. ISBN 978-3-030-05788-6. ISSN 2367-1181.
[Magnesium Technology Symposium 2019. San Antonio (US), 10.03.2019-14.03.2019]
R&D Projects: GA MŠMT EF16_013/0001794
Institutional support: RVO:61389005
Keywords : acoustic emission * magnesium * pre-compression
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)

Thermomechanical treatment consisting of pre-compression and isothermal aging at 150A °C for 16A h was applied to the extruded Mg-Zn-Ca (ZX10) alloy in order to reduce tension–compression yield asymmetry and improve mechanical properties via strengthening mechanism. With respect to the initial texture of the alloy, pre-compression leads to a formation of extension twins. A solute segregation and precipitation along twin boundaries is realized during a subsequent isothermal aging. After thermomechanical treatment, a solute solution and precipitation hardening contribute to the strengthening of the alloy. Active deformation mechanisms were monitored during compression or tension using the acoustic emission technique.
Permanent Link: http://hdl.handle.net/11104/0296101