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Role of zirconium addition on stability of UAl3 phase in Al---U system |
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| Authors: | T. R. G. Kutty C. Ganguly N. C. Jayadevan D. H. Sastry |
| Affiliation: | a Radiometallurgy division, Bhabha Atomic Research Centre, Bombay-400 085, India b Fuel Chemistry division, Bhabha Atomic Research Centre, Bombay-400 085, India c Department of Metallurgy, Indian Institute of Science, Bangalore-560 012, India |
| Abstract: | The microstructural changes of Al-22 wt%U and Al-46 wt%U alloys containing 3 wt% Zr were investigated after heat treatment at 620°C for 1 to 45 days. Though it is reported that addition of 3 wt% Zr stabilizes the (U,Zr)Al3 phase at room temperature, the present investigation shows that the (U,Zr)Al3 phase is not stable but slowly transforms to the U0.9Al4 phase. The high temperature creep curves generated for these ternary alloys showed a wavy pattern which also suggests that the (U,Zr)Al3 phase is not stable. |
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