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Microstructural evolution of Al–Ni–Y powders with different sizes

  • Yong Liu EMAIL logo , Sheng Guo , Zuming Liu , Yong Du , Baiyun Huang , Jinsong Huang , Shiqi Chen and Fengxiao Liu
Published/Copyright: December 9, 2021
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 96 Issue 1

Abstract

An Al-10Ni-8Y (at.%) alloy was atomized by Ar gas atomization in a close-coupled nozzle atomizer. The microstructure, phase composition, and thermal stability of the as-atomized powder were investigated by scanning electron microscopy, transmission electron microscopy, X-ray diffraction analysis and differential scanning calorimetry. Activation energies for different crystallization reactions were calculated using both Kissinger and Ozawa methods. The supercooled liquid region ΔTx (= Tx–Tg , where Tx and Tg are crystallization onset temperature and glass transition temperature, respectively) was detected to be in the range of 14 –24 K. Also presented were attempts to determine the critical particle size for amorphous structure.

Keywords: Gas atomization; Amorphous phase; Activation energy; Critical particle size
Prof. Dr. Yong Liu State Key Lab of Powder Metallurgy Central South University Changsha, 410083, Hunan, P.R. China Tel.: +86 731 887 6630 Fax: +86 731 871 0855

  1. This work was supported by the National Advanced Materials Committee of the P.R.China (Project No. 2003AA302520).

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Received: 2004-03-05
Accepted: 2004-11-02
Published Online: 2021-12-09

© 2005 Carl Hanser Verlag, München

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  17. Thermodynamic investigations of Bi–Cd, In–Pb, and Ni–Pd liquid alloys
  18. Instructions for authors
  19. Notifications/Mitteilungen
  20. Richtlinien für autoren
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  22. Press / Presse
  23. Conferences /Konferenzen
https://doi.org/10.3139/ijmr-2005-0012
Keywords for this article
Gas atomization; Amorphous phase; Activation energy; Critical particle size

Articles in the same Issue

  1. Frontmatter
  2. Editorial
  3. Editorial
  4. Articles BBasic
  5. Interdiffusion, Kirkendall effect, and Al self-diffusion in iron–aluminium alloys
  6. Permanent magnet alloys based on Sm2Co17; phase evolution in the quinary system Sm–Zr–Fe–Co–Cu
  7. A unified equation for the viscosity of pure liquid metals
  8. Calorimetric Study of Mg2Zn3
  9. Calorimetric investigations of the two ternary systems Al–Sn–Zn and Ag–Sn–Zn
  10. Articles AApplied
  11. Precipitation of the β-phase in Al–Mg alloys
  12. Mechanical properties of saffil fiber reinforced Zinc–Aluminium alloy (ZA 27) produced by pressure die casting
  13. Deformation and fracture mechanisms of Al2O3/Nb/Al2O3 composites under compression
  14. Kinetics and dynamics of hot deformation of OFHC copper in extended temperature and strain rate ranges
  15. Mechanism and kinetics of aging of high-strength Cu-5 wt.% Ni-2.5 wt.% Ti
  16. Microstructural evolution of Al–Ni–Y powders with different sizes
  17. Thermodynamic investigations of Bi–Cd, In–Pb, and Ni–Pd liquid alloys
  18. Instructions for authors
  19. Notifications/Mitteilungen
  20. Richtlinien für autoren
  21. Personal/ Personelles
  22. Press / Presse
  23. Conferences /Konferenzen
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