Effect of Al on Microstructure and Mechanical Property of NiAl-Mo Alloyed with Nb

Ping Han; Yi Hui Qi

doi:10.4028/www.scientific.net/AMR.476-478.81

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 476-478Effect of Al on Microstructure and Mechanical...

Effect of Al on Microstructure and Mechanical Property of NiAl-Mo Alloyed with Nb

Abstract:

Microstructure of the Ni-30Al-8Mo-2Nb alloy is dendrite of NiAl, Mo and small amount of Ni3Al phases, the Ni-40Al-8Mo-2Nb alloy is also dendrite of NiAl and Mo phases, and the Ni-50Al-8Mo-2Nb alloy is irregular dendrite of NiAl, Mo and small amount of NiAlNb(laves) phases. Upon the experiment, NiAlNb(laves) phase is only found in the Al-rich alloy. Compressive yield strength of the Ni-40Al-8Mo-2Nb alloy is higher than that of the Ni-30Al-8Mo-2Nb alloy, and much higher at low temperature or fast initial strain rate. TEM observation shows that the high temperature deformation of the Ni-40Al-8Mo-2Nb alloy is controlled by dynamic recovery and dynamic recrystallization.

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Advanced Materials Research (Volumes 476-478)

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81-84

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https://doi.org/10.4028/www.scientific.net/AMR.476-478.81

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February 2012

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Ping Han, Yi Hui Qi

Keywords:

Intermetallic, Mechanical Property, Microstructure, NiAl

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