Skip to main content

The effect of material behaviour on the analysis of single crystal turbine blades: Part I – Material model

Buy Article:

$43.00 plus tax (Refund Policy)


This paper describes a slip system model developed for the analysis of modern single crystal superalloys – specifically, the first generation alloys RR2000 and SRR99, and the second generation alloy CMSX-4. The single crystal model is implemented as an ABAQUS User MATerial (UMAT) subroutine, the framework is based on the classical theory of single crystal plasticity. The constitutive equations used have different formulations based on the micromechanisms of deformation and experimental measurements. The emphasis is on the effect of incorporating the micromechanisms of material behaviour on predicted macroscopic results. Several important phenomena and mechanisms, which are required for explaining creep properties as a function of stress, temperature and orientation are identified and included in the model. These include: activation of < 101 > {111} and < 112 > {111} slip systems, rigid body rotation, continuum damage, slip system softening, dislocation interaction, threshold behaviour and rafting. Model simulations are compared with experimental data in various deformation regimes. In a later part of the paper, the model is used to analyse the performance of a single crystal turbine blade. This enables the effect of the micromechanisms of deformation on overall component behaviour to be quantified.
No References
No Citations
No Supplementary Data
No Article Media
No Metrics

Keywords: creep; dislocations; material modelling; micromechanisms; single crystal superalloy; slip system modelling

Document Type: Research Article

Affiliations: Rolls-Royce UTC, Department of Material Science, Cambridge University, Pembroke St., Cambridge CB2 3QZ, UK

Publication date: 2002-04-01

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more