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A Novel Processing Route For Producing Magnesium Based Metal Matrix Composites

  • : Andreas Betz1, Gneiger Stefan2, Peter Schäffler3
  • : 1AIT Austrian Institute of Technology, 2Austrian Institute of Technology, 3non ferrum GmbH
  • : PDF Download
  • : 2016

Abstract

Magnesium based metal matrix composites (Magnesium MMC’s) are combining the lightweight potential of magnesium with the special properties of reinforcing particles. In this paper a novel continuous extrusion processing route for magnesium based metal matrix composites is presented. In the present process, single materials are mixed in the form of chips or powder and subsequently transferred into the semi-solid state. Afterwards, the material-mix is extracted through a die. In order to investigate the potential of the developed process and its produced material, magnesium together with different amounts of silicon-carbides (1-10 µm) have been manufactured and formed to profiles in an additional extrusion step. The microstructure, as well as the mechanical properties of the material has been analysed. It could be shown that the new process is capable of producing particle reinforced magnesium alloys, with homogenously distributed particles and a proper bonding between the added particles and the matrix material.

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