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, 1992
Accession Number
ADA250068

Entities

People

  • Charles G. Annis

Organizations

  • Pratt & Whitney

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Alloys
  • Chemistry
  • Crystals
  • Databases
  • Fracture (Mechanics)
  • Grain Boundaries
  • Heat Treatment
  • Materials
  • Mechanics
  • Military Research
  • Nickel
  • Nickel Aluminide
  • Probability
  • Propulsion Systems
  • Single Crystals
  • Temperature Gradients
  • Transitions

Readers

  • Materials Science and Engineering.
  • Structural Health Monitoring of Composite Structures.