Fatigue in Single Crystal Nickel Superalloys

Abstract

This program investigates the seemingly unusual behavior of single crystal airfoil materials. The fatigue initiation processes in single crystal (SC) materials are significantly more complicated and involved than fatigue initiation and subsequent behavior of a (single) macrocrack in conventional, isotropic, materials. To understand these differences is the major goal of this project.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Aug 15, 1992
Accession Number
ADA254603

Entities

People

  • Charles G. Annis
  • Daniel P. Deluca

Organizations

  • Pratt & Whitney

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Alloys
  • Crack Propagation
  • Crystal Structure
  • Crystals
  • Elements
  • Fracture (Mechanics)
  • Gas Turbines
  • Markov Models
  • Material Degradation Processes
  • Materials
  • Mechanical Engineering
  • Probabilistic Models
  • Probability
  • Single Crystals
  • Temperature Gradients
  • Turbine Blades
  • Turbines

Readers

  • Materials Science (Mechanical Engineering).
  • Materials Science and Engineering.
  • Systems Analysis and Design