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

D. Dye, J. Coakley, V. A. Vorontsov, H. J. Stone, R. B. Rogge

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)109-112
Number of pages4
JournalScripta Materialia
Issue number2
Publication statusPublished - 1 Jul 2009


  • elastic behaviour
  • neutron diffraction
  • nickel alloys
  • single-crystal nickel superalloy


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