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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Published inScripta materialia Vol. 61; no. 2; pp. 109 - 112
Main Authors Dye, D., Coakley, J., Vorontsov, V.A., Stone, H.J., Rogge, R.B.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.07.2009
Subjects
Elastic behaviour
Neutron diffraction
Nickel alloys
Neutron diffraction
Nickel alloys
Elastic behaviour
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Summary: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.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2009.03.008