Combustion synthesis and mechanical evaluation of dual phase materials based on NiAl

A. Fuente, J. M. Martín, F. Castro, I. Smid

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Two-phase β-NiAl/γ'-Ni3Al base intermetallics were produced by combustion synthesis from elemental powder mixtures. Compositions belong to the system Ni-Al-Fe-Cr-B-Ti-(Hf or Ta). The combustion synthesis of binary -βNiAl intermetallic was also studied. The mixes were uniaxially pressed (200 and 600 MPa) without internal lubrication. The ignition temperature was determined by differential scanning calorimetry (DSC) in argon using a heating rate of 10°C/min. Hot consolidation was carried out by pressureless sintering in argon, hot pressing (HP) at 35-50 MPa in argon or vacuum, and hot isostatic pressing (HIP) at 200 MPa, at different temperatures and times. Density, Vickers hardness, and the content of oxygen, nitrogen, carbon, and sulphur were measured at every stage of processing. The main constituents were identified by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The mechanical properties of multicomponent intermetallics were evaluated by tensile tests at room temperature and 1000°C.

Original languageEnglish (US)
Title of host publicationProceedings of the Euro International Powder Metallurgy Congress and Exhibition, Euro PM 2009
PublisherEuropean Powder Metallurgy Association (EPMA)
Volume2
ISBN (Print)9781899072088
StatePublished - Jan 1 2009
EventEuropean International Powder Metallurgy Congress and Exhibition, Euro PM 2009 - Copenhagen, Denmark
Duration: Oct 12 2009Oct 14 2009

Other

OtherEuropean International Powder Metallurgy Congress and Exhibition, Euro PM 2009
CountryDenmark
CityCopenhagen
Period10/12/0910/14/09

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Ceramics and Composites
  • Materials Chemistry
  • Metals and Alloys
  • Condensed Matter Physics

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    Fuente, A., Martín, J. M., Castro, F., & Smid, I. (2009). Combustion synthesis and mechanical evaluation of dual phase materials based on NiAl. In Proceedings of the Euro International Powder Metallurgy Congress and Exhibition, Euro PM 2009 (Vol. 2). European Powder Metallurgy Association (EPMA).