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.

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Document Details

Document Type
Technical Report
Publication Date
Apr 15, 1993
Accession Number
ADA266116

Entities

People

  • Charles G. Annis
  • Daniel P. Deluca

Organizations

  • Pratt & Whitney

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Alloys
  • Boundaries
  • Crack Propagation
  • Cracks
  • Crystals
  • Fracture (Mechanics)
  • Grain Boundaries
  • Heat Treatment
  • Materials
  • Mechanics
  • Nickel
  • Nickel Aluminide
  • Probability
  • Propulsion Systems
  • Single Crystals
  • Turbine Blades
  • Turbines

Readers

  • Materials Science (Mechanical Engineering).
  • Materials Science and Engineering.
  • Theoretical Analysis.