Fracture Toughness of 4330V (Mod Plus Si) Steel Under Plane Strain Conditions

Abstract

An investigation was conducted to study size effects in notch tension testing and to determine the fracture toughness of 4330V (Mod + Si) steel under plane strain conditions. Fracture studies using circumferentially notched round specimens (0.505, 0.750, and 3 in. in diameter) of 4330V (Mod + Si) steel tempered at 600 degree and at 850 degree F, are described. Using the mathematical model including plastic strain zone correction proposed by Irwin (Plastic Zone Near a Crack and Fracture Toughness, Contribution to 7th Sagamore Conference, 1960) the data were analyzed and the fracture toughness values were computed. Good agreement was found between fracture toughness values for the small specimens, but a somewhat lower value was found for the 3-in. specimens. This deviation is discussed in light of statistical size effects.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1961
Accession Number
AD0262244

Entities

People

  • C. M. Carman

Organizations

  • Frankford Arsenal

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Diameters
  • Fracture (Mechanics)
  • Heat Treatment
  • Illinois
  • Materials
  • Materials Laboratories
  • Mathematical Models
  • Mechanics
  • Military Research
  • New Jersey
  • New York
  • Steel
  • Strain Hardening
  • Tensile Strength
  • United States
  • Virginia
  • Yield Strength

Fields of Study

  • Materials science

Readers

  • Geodesy
  • Materials Science (Mechanical Engineering).