Header menu link for other important links
X
Development of Ni-Al2O3 in-situ nanocomposite by reactive milling and spark plasma sintering
Duraiswamy Sivaprahasam,
Published in
2011
Volume: 42
   
Issue: 7
Pages: 2085 - 2093
Abstract
In the present study, Ni-30 vol pct Al2O3 in-situ nanocomposite was developed by reactive milling of NiO-Al-Ni powder mixture followed by spark plasma sintering (SPS). During milling, fcc to hcp transformation was observed in Ni(Al) phase and it transformed back to fcc phase around 773 K (500 °C). The hardness and yield strength of Ni-30 vol pct Al2O3 nanocomposite are approximately two times higher than that of pure Ni of similar grain size. The improved mechanical properties of nanocomposite are attributed to the presence of alumina particles of nanometer size. © 2011 The Minerals, Metals & Materials Society and ASM International.
About the journal
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
ISSN10735623
Open AccessNo
Concepts (14)
  •  related image
    Alumina particles
  •  related image
    Fcc phase
  •  related image
    Grain size
  •  related image
    HCP TRANSFORMATIONS
  •  related image
    In-situ
  •  related image
    Nanometer size
  •  related image
    POWDER MIXTURES
  •  related image
    Reactive milling
  •  related image
    Electric sparks
  •  related image
    Hardness
  •  related image
    Milling (machining)
  •  related image
    Nanocomposites
  •  related image
    Spark plasma sintering
  •  related image
    Aluminum