A model of multiaxial low cycle fatigue life time of a nickel-base single crystal

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Abstract

Based on the anisotropic crystallographic theory, a model of low cycle fatigue (LCF) life time of a nickel-base single crystal in a multiaxial stress state is proposed. The model indicates that LCF life time has a power relationship to total shear strain of modified octahedral slip. The detail distributions of stress and strain in a hellow cylinder specimen under tension-torsion LCF loadings are analyzed in detail. The LCF life time model has been confirmed successfully using the results of tension-torsion LCF tests of CMSX-2 NI-base single crystal superalloy.

Original languageEnglish
Pages (from-to)31
Number of pages1
JournalXiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume29
Issue number1
StatePublished - 2000

Keywords

  • Anisotropic crystallographic theory
  • Life time
  • Low cycle fatigue
  • Nickel-base single crystal

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