Al-rich portion of the Al-Hf phase diagram

Electrical resistivity measurements, differential thermal analysis, optical microscopy, and the deposition of hafnium compound particles from a melt are used to study the Al-rich portion of the Al-Hf phase diagram. Prominence is given to the hafnium solubility in solid and liquid aluminum. The studi...

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Bibliographic Details
Published in:Russian metallurgy Metally 2009-06, Vol.2009 (3), p.258-262
Main Authors: Rokhlin, L. L., Bochvar, N. R., Dobatkina, T. V., Leont’ev, V. G.
Format: Article
Language:English
Subjects:
Alloys
Aluminum
Aluminum base alloys
Chemistry and Materials Science
Hafnium
Invariants
Liquids
Materials Science
Metallic Materials
Metallurgy
Phase diagrams
Solubility
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Summary:Electrical resistivity measurements, differential thermal analysis, optical microscopy, and the deposition of hafnium compound particles from a melt are used to study the Al-rich portion of the Al-Hf phase diagram. Prominence is given to the hafnium solubility in solid and liquid aluminum. The studies show a peritectic character of the invariant reaction during the solidification of alloys with sufficiently high hafnium contents and a slight difference between the peritectic and melting temperatures of pure aluminum. The hafnium solubility in solid and liquid aluminum is shown to increase with the temperature. The hafnium solubility in solid aluminum at the peritectic temperature (maximum solubility) is 1.00 wt % (0.153 at %); the hafnium solubility in liquid aluminum at this temperature is 0.43 wt % (0.065 at %).
ISSN:0036-0295
1555-6255
1531-8648
DOI:10.1134/S0036029509030124