Effect of mischmetal additions and solution heat treatments (T4) on the microstructure and mechanical properties of thixocast ZK60-RE magnesium alloys

Erenilton Pereira da Silva, Ricardo Henrique Buzolin, Bruna Callegari, Fernando Warchomicka, Guillermo C. Requena, Haroldo Cavalcanti Pinto

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem Konferenzband

Abstract

Solution treatments (T4) at 380 °C for 16 h and 500 °C for 8 h were performed for ZK60 magnesium alloys modified with addition of 0.5, 1.5 and 2.5 wt% of mischmetal (combination of rare-earth (RE) elements). The compression behaviour was investigated at room temperature and at 300 °C correlated with the microstructure and differential scanning calorimetry (DSC) data. The ascast microstructure is formed by -Mg matrix with globular grains reinforced by a semi continuous network of Mg-Zn, Mg-Zn-RE and Mg-RE intermetallic particles. Solution-treated alloys show lower yield strengths due to partial dissolution of precipitates. Work hardening was not observed for the alloys compressed at 300°C with the compression speed of 10-3 s-1, whereas it was observed for the compression speed of 10-2 s-1 for the all as-cast, ZK60-1.5RE-T4 at 380 °C and ZK60-1.5RE-T4 at 380 °C.

Originalspracheenglisch
TitelTHERMEC 2016
Herausgeber (Verlag)Trans Tech Publications Ltd.
Seiten2300-2305
Seitenumfang6
ISBN (Print)9783035711295
DOIs
PublikationsstatusVeröffentlicht - 1 Jan 2017
Veranstaltung9th International Conference on Processing and Manufacturing of Advanced Materials: Thermec 2016 - Stadthalle Graz, Graz, Österreich
Dauer: 29 Mai 20163 Jun 2016
https://www.tugraz.at/events/thermec-2016/home/

Publikationsreihe

NameMaterials Science Forum
Band879
ISSN (Print)0255-5476

Konferenz

Konferenz9th International Conference on Processing and Manufacturing of Advanced Materials
KurztitelTHERMEC’2016
LandÖsterreich
OrtGraz
Zeitraum29/05/163/06/16
Internetadresse

ASJC Scopus subject areas

  • !!Materials Science(all)
  • !!Condensed Matter Physics
  • !!Mechanics of Materials
  • !!Mechanical Engineering

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