Erosion and Fatigue Behavior of Coated Titanium Alloys for Gas Turbine Engine Compressor Applications.

Abstract

The erosion and fatigue behavior of several potentially protective coatings for reducing the severity of sand erosion degradation of titanium alloys was studied. The coatings can be ranked in the following order of decreasing merit incorporating erosion indices at 30, 60, and 90 degrees impingement: titanium carbonitride (nickel interlayer); titanium diboride (nickel interlayer); boron carbide; diffusion-bonded electroless nickel plus overlay of chromium; diffusion-bonded electroless nickel; and plasma-sprayed boron. All coatings caused fatigue strength reductions of between 22% and 80%. Shot peening reduced fatigue degradation in some cases.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1976
Accession Number
ADA022344

Entities

People

  • Joseph L. Morrossi
  • Milton Levy

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Alloys
  • Boron Carbides
  • Coatings
  • Compressor Components
  • Compressors
  • Fatigue Tests (Mechanics)
  • Gas Turbines
  • Materials
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Modulus Of Elasticity
  • Shot Peening
  • Tensile Strength
  • Turbines
  • Yield Strength

Fields of Study

  • Materials science

Readers

  • Structural Health Monitoring of Composite Structures.
  • Surface Engineering/Surface Coating Technology.