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Processing and Characterizing RuAl Eutectics

Published online by Cambridge University Press:  11 February 2011

Todd Reynolds and
David Johnson
Todd Reynolds
Affiliation:
Materials Engineering, Purdue University, West Lafayette, IN 47907–1289
David Johnson
Affiliation:
Materials Engineering, Purdue University, West Lafayette, IN 47907–1289
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Abstract

Eutectic alloys in the Ru-Al-Mo system were directionally solidified by a cold crucible Czochralski technique. The solidification microstructures and composition of the phases were examined and used to estimate a partial liquidus projection. Preliminary results from compression and hardness testing indicate that the hardness of RuAl varies significantly with composition. The Ru-rich alloys in which RuAl is in equilibrium with the hcp (Ru,Mo) solid solution were found to have the lowest hardness values.

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References

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