Fracture Toughness Characterization of Selected Ultra High Carbon Steels.

Abstract

This effort, part of an ongoing program examining the microstructural and mechanical properties of extensively warm-worked ultra high carbon (UHC) steels, was directed at measurement of the fracture toughness of these steels. A facility was constructed to test bend-type fracture toughness specimens in accordance with the American Society for Testing and Materials (ASTM) Standard E399-78; several UHC steel alloys were evaluated and the results correlated with microstructural and other mechanical test results. With one exception, processing failed to eliminate coarse carbides from the microstructures of these materials and fracture toughness, K(IC), values were accordingly low. A commercial alloy, AISI 52100, processed similarly to the other experimental alloys, did not have the coarse carbides present to as great an extent, and was significantly tougher, as manifested by a strength ratio twice that of the other alloys. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1979
Accession Number
ADA073395

Entities

People

  • James Louis Taylor

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Charpy Impact Tests
  • Crack Propagation
  • Crystal Structure
  • Engineering
  • Failure Mode And Effect Analysis
  • Heat Treatment
  • Impact Tests
  • Materials
  • Measurement
  • Mechanical Engineering
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Resistance
  • Tensile Strength
  • Toughness
  • Wear Resistance

Fields of Study

  • Materials science

Readers

  • Internal Combustion Engine (ICE) Technology.
  • Materials Science (Mechanical Engineering).
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