THE ALUMINIUM-RICH END OF THE ALUMINIUM-HAFNIUM EQUILIBRIUM DIAGRAM
Journal Article
·
· J. Inst. Metals
OSTI ID:4056924
The aluminum end of the aluminum-hafnium diagram was investigated and found to be very similar to that of the aluminum-titanium and aluminum-zirconium systems. The compound HfAl/sub 3/, having a body-centered tetragonal structure with alpha = 3.986 and c = 17.05 A, reacts peritectically with aluminum to form an aluminum-rich solid solution. The peritectic temperature is 666.2 plus or minus 0.5-C; the liquid solubility is 0.49 wt.% at the peritectic temperature and increases to 1.94% at 880 deg C. The solid solubility is 1.22% at the peritectic temperature and 0.86% at 430 deg C. A method of determining the solid solubility by measuring the resistivity directly at temperature was tested and proved satisfactory. (auth)
- Research Organization:
- Illinois Inst. of Tech., Chicago
- NSA Number:
- NSA-15-014776
- OSTI ID:
- 4056924
- Journal Information:
- J. Inst. Metals, Journal Name: J. Inst. Metals Vol. Vol: 89
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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