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) macro crack in conventional, isotropic, materials. To understand these differences is the major goal of this project. Fatigue, Fracture, Single crystan, PWA 1480, PWA 1484.

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Document Details

Document Type
Technical Report
Publication Date
Oct 15, 1994
Accession Number
ADA285727

Entities

People

  • Charles G. Annis
  • Daniel P. Deluca

Organizations

  • Pratt & Whitney

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Alloys
  • Chemistry
  • Crack Propagation
  • Crack Tips
  • Crystals
  • Elements
  • Energy
  • Fracture (Mechanics)
  • Grain Boundaries
  • Materials
  • Mechanics
  • Military Research
  • Probability
  • Propulsion Systems
  • Shear Stresses
  • Single Crystals
  • Turbine Blades

Readers

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