Devitrification of Zr-Ni-Al-Cu-Ti(Nb,Ta) glassy alloys

Devitrification of Zr-Ni-Al-Cu-Ti(Nb,Ta) glassy alloys

The devitrification behavior and phase formation in Zr 65–55Ni 10Al 7.5Cu 7.5Ti 5–10(Nb,Ta) 5–10 metallic glass have been studied by X-ray diffraction, transmission electron microscopy and differential scanning calorimetry. It has been found that mutual addition of Ti and Ta/Nb benefits the formatio...

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Veröffentlicht in:Materials research bulletin 2004-07, Vol.39 (9), p.1345-1350
Hauptverfasser: Ouyang, L.J, Louzguine, D.V, Kimura, H.M, Ohsuna, T, Inoue, A
Format: Artikel
Sprache:eng
Schlagworte:
A. Alloy
A. Quasicrystals
ALLOYS
BEARINGS
C. Differential scanning calorimetry
CALORIMETRY
HEATING
MATERIALS SCIENCE
METALLIC GLASSES
NANOSTRUCTURES
OXYGEN
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
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Beschreibung
Zusammenfassung:The devitrification behavior and phase formation in Zr 65–55Ni 10Al 7.5Cu 7.5Ti 5–10(Nb,Ta) 5–10 metallic glass have been studied by X-ray diffraction, transmission electron microscopy and differential scanning calorimetry. It has been found that mutual addition of Ti and Ta/Nb benefits the formation of nanoscale icosahedral phase in the glassy phase on heating and the oxygen content in the alloy makes significant influence on the devitrification behavior of these alloys. At the same time in Nb-bearing alloys and alloys containing 5 at.% Ta icosahedral phase was found to coexist with crystalline one.
ISSN:0025-5408
1873-4227
DOI:10.1016/j.materresbull.2004.03.002