FRACTURE CHARACTERISTICS OF STRUCTURAL METALS

Abstract

An experimental program was conducted to deter mine the plane strain fracture toughness K sub IC of the following high-strength materials: 4340 steel; H-11 steel; Maraging steel; and Beta titanium. The K sub IC parameter was determined from circumferentially precracked round specimens and by resistance measurements conducted on precracked sheet specimens. Several heats of each material were evaluated over temperatures ranging from -100 to 300 F. Although specific problems occurred in the maraging steel evaluations, the over- all results indicated that reasonably good consistency existed between heats of sheet material. The experimentally determined data were combined with results of plane strain fracture toughness presented in the literature to produce typical room temperature K sub IC values for 4340 and H-11 sheet which could be considered for inclusion in MIL Handbook 5.

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Document Details

Document Type
Technical Report
Publication Date
Jun 30, 1963
Accession Number
AD0411509

Entities

People

  • E.a. Steigerwald
  • G.l. Hanna

Organizations

  • TRW Inc.

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Alloys
  • Failure Mode And Effect Analysis
  • Ferrium
  • Fracture (Mechanics)
  • Literature Surveys
  • Maraging Steels
  • Materials
  • Materials Processing
  • Measurement
  • Mechanical Properties
  • Mechanics
  • Notch Sensitivity
  • Physical Properties
  • Resistance
  • Tensile Properties
  • Test And Evaluation
  • Test Methods

Readers

  • Materials Science (Mechanical Engineering).
  • Metallurgy
  • Systems Analysis and Design