Effect of Cr Addition on the Phase Equilibria of the Nb-Si System
Keyword(s):
AbstractNb-silicide based in-situ composites are promising materials for future high-temperature structural applications. Nb-silicide composites are typically alloyed with Hf, Ti, Cr, and Al to provide a balance of mechanical and environmental properties. A thermodynamic description of the Nb-Cr-Si system has been developed previously in literature based on reported isothermal sections. According to the previously calculated phase diagrams, selected alloys were directionally solidified. The as-solidified microstructures could not be interpreted using the liquidus projection calculated from the existing thermodynamic descriptions. Therefore, an improved thermodynamic description was developed by incorporating the new experimental data.
2011 ◽
Vol 19
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pp. 1489-1501
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2017 ◽
Vol 53
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pp. 85-93
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2001 ◽
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pp. 122-123
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pp. 1562-1571
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2009 ◽
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