Bulk nanocrystalline Al-Si-Fe-mischmetal (Mm) alloys produced by high pressure hot compaction

Grzegorz Cieślak ,  Tadeusz Kulik ,  Jerzy Latuch 

Warsaw University of Technology, Faculty of Materials Science and Engineering (InMat), Wołoska 141, Warszawa 02-507, Poland


Nanocrystalline Al-based alloys containing silicon (Si), rare earth metal (RE) and late transition metal (Fe), are interesting for their excellent mechanical properties, exceeding those of the commercial crystalline Al-based alloys. Rapid solidification and mechanical alloying are well known methods to obtain alloys with nanometer grain size. The nanometer grains provide an increase of mechanical properties of the alloys. However, the possible industrial aplication of these alloys is limited by the reduced dimensions, obtained by the traditional rapid solidification techniques. That is why, many attempts to produce nanocrystalline aluminium alloys in bulk form have been carried out. The aim of this work was to manufacture high strength bulk nanocrystalline alloys from Al-Si-Fe-RE system. Replacement of RE by Mischmetal (Mm) reduces the cost of investigated materials, as Mm is an order of magnitude cheaper than pure rare earth elements. Bulk nanostructured alloys were produced by ball milling of nanocrystalline ribbons followed by high pressure hot compaction.


Related papers
  1. "Magnetically soft nanomaterials for high-temperature applications"
  2. Influence of rare earth (Gd, Dy or Sm) dopants on the magnetic properties and microstructure of Nd60-xRExFe30Al10 alloys
  3. Amorphous Al60Fe20Ti20 alloy obtained by consolidation of mechanically alloyed powder
  4. Structure and magnetic properties of Fe-Nb-B amorphous/nanocrystalline alloys produced by compaction of mechanically alloyed powders
  5. Formation and properties of the Cu-Zr-Ag-Ti bulk metallic glasses
  6. Amorphous Ni59Zr20Ti16M5 (M = Cu, Ag) alloys obtained by melt spinning and mechanical alloying
  7. Influence of Fe and Ag addition on the amorphization and thermal stability of CuTiZrNi powders processed by mechanical alloying
  8. Nanocrystalline Ni3Al-based alloys produced by mechanical alloying of Ni-Al-Co powders and consolidation
  9. Structural transformations and magnetic properties of Fe60Pt25-xB15+x alloys
  10. An attempt to improve the soft magnetic properties of iron-based bulk metallic glasses by annealing
  11. Influence of high presure hot compaction on microstructure of Al-Si-Ni-Mm alloys
  12. Phase transformations during mechanical alloying of nickel aluminides and subsequent heating of milling product
  13. Phase transformations in M2 steel powders subjected to ball milling
  14. Dependence of microhardness on annealing time of amorphous Al-Mm-Ni-(Fe,Co) alloys
  15. Bulk nanostructured Al-Mm-Ni-(Fe,Co) alloys produced by high-pressure hot compaction of amorphous powders
  16. Crystallization kinetics of Al95-x-yMmxNi5(Co,Fe)y series (x = 4, 5; y = 2, 3)
  17. Amorphous bulk alloys from Al-Mm-Ni system
  18. The phase transformation Co-Al alloys by ball milling and mechanical alloying
  19. Magneticaly Soft Fe-Co-Based Nanocrystalline Alloys
  20. Nanocrystalization of Al-Mn-Ni-Fe Alloys by Devitrification

Presentation: Poster at E-MRS Fall Meeting 2009, Symposium H, by Grzegorz Cieślak
See On-line Journal of E-MRS Fall Meeting 2009

Submitted: 2009-05-25 15:50
Revised:   2009-06-07 00:48