Experimental investigation of phase equilibria in the Al–Ni–Sc system

Phase equilibria in Al–Ni–Sc ternary system have been measured through alloy sampling. According to the results from electron probe microanalysis and X-ray diffraction techniques, isothermal sections of Al–Ni–Sc ternary system at 1173 K and 1273 K were constructed, where four new ternary phases, τ7...

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Bibliographic Details
Published in:Journal of materials science 2019-07, Vol.54 (14), p.10516-10528
Main Authors: He, J. Q., Fan, L., Liu, H. S., Peng, H. L., Jin, Z. P.
Format: Article
Language:English
Subjects:
Alloys
Aluminum
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Crystallography and Scattering Methods
Diffraction
Electron probe microanalysis
Materials Science
Metals
Nickel
Polymer Sciences
Scandium
Solid Mechanics
Ternary systems
X-rays
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Summary:Phase equilibria in Al–Ni–Sc ternary system have been measured through alloy sampling. According to the results from electron probe microanalysis and X-ray diffraction techniques, isothermal sections of Al–Ni–Sc ternary system at 1173 K and 1273 K were constructed, where four new ternary phases, τ7 (Ni 2 Al 5 Sc), τ8 (Ni 2 Al 4 Sc), τ9 (NiAl 2 Sc 3 ) and τ10 (NiAlSc 5 ), were detected along with the formerly reported ternary compounds, τ1 (NiAlSc), τ2 (Ni 2 AlSc) and τ5 (NiAl 2 Sc). The existence of τ3 (Ni 7 Al 16 Sc 6 ), τ4 (NiAl 4 Sc) and τ6 (Ni 3 Al 9 Sc) reported previously in the literature was not confirmed in this work. And τ1 shows large composition range at 1173 K and 1273 K.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-019-03640-3