Amorphous phase formation during spray forming of Al84Y3Ni8Co4Zr1 alloy

C. R.M. Afonso, C. Bolfarini, C. S. Kiminami, N. D. Bassim, M. J. Kaufman, M. F. Amateau, T. J. Eden, J. M. Galbraith

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

In this investigation the Al84Y3Ni8Co4Zr1 alloy has been processed by spray forming to investigate the potential of achieving substantial fractions of the amorphous phase in the billet. The alloy was prepared by spray metal forming using the ratio of volumetric gas flow rate to mass of metal flow rate of 8.7 m3/kg. The resulting billet, weighting 2.1 kg, as well as the powders produced by the particles that had not hit the growing billet (overspray), were characterized by using X-ray diffractometry (XRD), differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The powders had particles with spherical morphology in the size range of few microns to 100 μm with the median particle diameters about 20 ± 1 μm. The resulting billet contained only crystalline phases nevertheless the powder was composed of about 40% volume fraction of amorphous phase. This result indicates that the heating of the billet, by the heat release during solidification of the liquid and semi-solid particles was at temperature and for time enough for crystallization.

Original languageEnglish (US)
Pages (from-to)134-138
Number of pages5
JournalJournal of Non-Crystalline Solids
Volume284
Issue number1-3
DOIs
StatePublished - May 1 2001

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billets
Powders
sprayers
Flow rate
Metal forming
Crystallization
X ray diffraction analysis
flow velocity
Flow of gases
Solidification
Differential scanning calorimetry
Volume fraction
Metals
metal forming
Crystalline materials
Transmission electron microscopy
Heating
Scanning electron microscopy
solidification
Liquids

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

Cite this

Afonso, C. R. M., Bolfarini, C., Kiminami, C. S., Bassim, N. D., Kaufman, M. J., Amateau, M. F., ... Galbraith, J. M. (2001). Amorphous phase formation during spray forming of Al84Y3Ni8Co4Zr1 alloy. Journal of Non-Crystalline Solids, 284(1-3), 134-138. https://doi.org/10.1016/S0022-3093(01)00392-1
Afonso, C. R.M. ; Bolfarini, C. ; Kiminami, C. S. ; Bassim, N. D. ; Kaufman, M. J. ; Amateau, M. F. ; Eden, T. J. ; Galbraith, J. M. / Amorphous phase formation during spray forming of Al84Y3Ni8Co4Zr1 alloy. In: Journal of Non-Crystalline Solids. 2001 ; Vol. 284, No. 1-3. pp. 134-138.
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Afonso, CRM, Bolfarini, C, Kiminami, CS, Bassim, ND, Kaufman, MJ, Amateau, MF, Eden, TJ & Galbraith, JM 2001, 'Amorphous phase formation during spray forming of Al84Y3Ni8Co4Zr1 alloy', Journal of Non-Crystalline Solids, vol. 284, no. 1-3, pp. 134-138. https://doi.org/10.1016/S0022-3093(01)00392-1

Amorphous phase formation during spray forming of Al84Y3Ni8Co4Zr1 alloy. / Afonso, C. R.M.; Bolfarini, C.; Kiminami, C. S.; Bassim, N. D.; Kaufman, M. J.; Amateau, M. F.; Eden, T. J.; Galbraith, J. M.

In: Journal of Non-Crystalline Solids, Vol. 284, No. 1-3, 01.05.2001, p. 134-138.

Research output: Contribution to journalArticle

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T1 - Amorphous phase formation during spray forming of Al84Y3Ni8Co4Zr1 alloy

AU - Afonso, C. R.M.

AU - Bolfarini, C.

AU - Kiminami, C. S.

AU - Bassim, N. D.

AU - Kaufman, M. J.

AU - Amateau, M. F.

AU - Eden, T. J.

AU - Galbraith, J. M.

PY - 2001/5/1

Y1 - 2001/5/1

N2 - In this investigation the Al84Y3Ni8Co4Zr1 alloy has been processed by spray forming to investigate the potential of achieving substantial fractions of the amorphous phase in the billet. The alloy was prepared by spray metal forming using the ratio of volumetric gas flow rate to mass of metal flow rate of 8.7 m3/kg. The resulting billet, weighting 2.1 kg, as well as the powders produced by the particles that had not hit the growing billet (overspray), were characterized by using X-ray diffractometry (XRD), differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The powders had particles with spherical morphology in the size range of few microns to 100 μm with the median particle diameters about 20 ± 1 μm. The resulting billet contained only crystalline phases nevertheless the powder was composed of about 40% volume fraction of amorphous phase. This result indicates that the heating of the billet, by the heat release during solidification of the liquid and semi-solid particles was at temperature and for time enough for crystallization.

AB - In this investigation the Al84Y3Ni8Co4Zr1 alloy has been processed by spray forming to investigate the potential of achieving substantial fractions of the amorphous phase in the billet. The alloy was prepared by spray metal forming using the ratio of volumetric gas flow rate to mass of metal flow rate of 8.7 m3/kg. The resulting billet, weighting 2.1 kg, as well as the powders produced by the particles that had not hit the growing billet (overspray), were characterized by using X-ray diffractometry (XRD), differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The powders had particles with spherical morphology in the size range of few microns to 100 μm with the median particle diameters about 20 ± 1 μm. The resulting billet contained only crystalline phases nevertheless the powder was composed of about 40% volume fraction of amorphous phase. This result indicates that the heating of the billet, by the heat release during solidification of the liquid and semi-solid particles was at temperature and for time enough for crystallization.

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Afonso CRM, Bolfarini C, Kiminami CS, Bassim ND, Kaufman MJ, Amateau MF et al. Amorphous phase formation during spray forming of Al84Y3Ni8Co4Zr1 alloy. Journal of Non-Crystalline Solids. 2001 May 1;284(1-3):134-138. https://doi.org/10.1016/S0022-3093(01)00392-1