TY - GEN
T1 - Combustion synthesis and mechanical evaluation of dual phase materials based on NiAl
AU - Fuente, A.
AU - Martín, J. M.
AU - Castro, F.
AU - Smid, I.
PY - 2009
Y1 - 2009
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:84902189081
SN - 9781899072088
T3 - Proceedings of the Euro International Powder Metallurgy Congress and Exhibition, Euro PM 2009
BT - Proceedings of the Euro International Powder Metallurgy Congress and Exhibition, Euro PM 2009
PB - European Powder Metallurgy Association (EPMA)
T2 - European International Powder Metallurgy Congress and Exhibition, Euro PM 2009
Y2 - 12 October 2009 through 14 October 2009
ER -