Elastic moduli and load partitioning in a single-crystal nickel superalloy

The constrained moduli of the γ and γ′ phases of the Ni superalloy CMSX-4 have been determined using in situ neutron diffraction. The elastic moduli of the isolated phases fitted using a model are found to be E [ 100 ] = 103 GPa in the γ and 134 GPa in the γ′ at room temperature, while at 900 °C the...

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Veröffentlicht in:	Scripta materialia 2009-07, Vol.61 (2), p.109-112
Hauptverfasser:	Dye, D., Coakley, J., Vorontsov, V.A., Stone, H.J., Rogge, R.B.
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Sprache:	eng
Schlagworte:	Elastic behaviour Neutron diffraction Nickel alloys
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creator	Dye, D. Coakley, J. Vorontsov, V.A. Stone, H.J. Rogge, R.B.
description	The constrained moduli of the γ and γ′ phases of the Ni superalloy CMSX-4 have been determined using in situ neutron diffraction. The elastic moduli of the isolated phases fitted using a model are found to be E [ 100 ] = 103 GPa in the γ and 134 GPa in the γ′ at room temperature, while at 900 °C they are 96 and 90 GPa. Therefore load partitions markedly to the γ′ phase at room temperature but there is little load partitioning at elevated temperatures.
doi_str_mv	10.1016/j.scriptamat.2009.03.008
format	Article
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title	Elastic moduli and load partitioning in a single-crystal nickel superalloy
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