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Structural Evolution Of AlCrFeNiMn/Graphite During Mechanical Alloying From 5 To 40 Hours

  • : Gabriela Popescu1, Ioana Csaki1, Mihai Matara1, Roxana Trusca2, Vasile Soare3, Dumitru Mitrica3
  • : 1University Politehnica Bucharest, 2METAV CD, 3INCDIMNR
  • : PDF Download
  • : 2016

Abstract

High entropy alloys proved to be materials having high hardness and good mechanical properties as well as corrosion resistance. We obtained high entropy alloy consisting in 5 elements to be used as matrix for a composite material. As a reinforcing material we used graphite particles in order to impose some autolubication properties. We designed this material for bearing used for hot rolling. We realized a series of experiments to assess the microstructure and alloying degree after 5, 10, 15, 20, 25 and 40 hours milling. The powder characterization was realized in order to establish the best parameter for pressing and sintering. The results showed that the powders became nanosized starting from 25h milling and became completely alloyed at 40h milling.  

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