High pressure die casting of Fe-based metallic glass

Publikationen: Beitrag in FachzeitschriftArtikelForschung(peer-reviewed)

Autoren

  • Parthiban Ramasamy
  • Attila Szabo
  • Stefan Borzel
  • Mihai Stoica
  • András Bárdos

Organisationseinheiten

Externe Organisationseinheiten

  • IFW Dresden
  • Budapest University of Technology and Economics
  • Breuckmann GmbH and Co KG Heiligenhaus
  • Technische Universität Dresden
  • Erich-Schmid-Institut für Materialwissenschaft der Österreichischen Akademie der Wissenschaften
  • Politehnica University of Timisoara

Abstract

Soft ferromagnetic Fe-based bulk metallic glass key-shaped specimens with a maximum and minimum width of 25.4 and 5 mm, respectively, were successfully produced using a high pressure die casting (HPDC) method, The influence of die material, alloy temperature and flow rate on the microstructure, thermal stability and soft ferromagnetic properties has been studied. The results suggest that a steel die in which the molten metal flows at low rate and high temperature can be used to produce completely glassy samples. This can be attributed to the laminar filling of the mold and to a lower heat transfer coefficient, which avoids the skin effect in the steel mold. In addition, magnetic measurements reveal that the amorphous structure of the material is maintained throughout the key-shaped samples. Although it is difficult to control the flow and cooling rate of the molten metal in the corners of the key due to different cross sections, this can be overcome by proper tool geometry. The present results confirm that HPDC is a suitable method for the casting of Fe-based bulk glassy alloys even with complex geometries for a broad range of applications.

Details

OriginalspracheEnglisch
Aufsatznummer35258
Seitenumfang11
FachzeitschriftScientific reports (London : Nature Publishing Group)
Jahrgang6.2016
DOIs
StatusVeröffentlicht - 11 Okt. 2016