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
Jul 15, 1992
Accession Number
ADA254704

Entities

People

  • Daniel P. Deluca

Organizations

  • Pratt & Whitney

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Alloys
  • Crack Tips
  • Cracks
  • Crystals
  • Energy
  • Fracture (Mechanics)
  • Grain Boundaries
  • Heat Of Activation
  • Heat Treatment
  • Materials
  • Mechanics
  • Nickel
  • Nickel Aluminide
  • Propulsion Systems
  • Single Crystals
  • Stress Corrosion
  • Temperature Gradients

Readers

  • Materials Science and Engineering.
  • Military Science and Technology Research and Modernization.
  • Powder metallurgy of Titanium alloys.