CENTER NOTCH PLANE STRAIN K-IC FRACTURE TOUGHNESS PROPERTIES OF SEVERAL HIGH-STRENGTH STEEL ALLOYS

Abstract

Plane strain fracture toughness and tensile properties were determined at room temperature, utilizing compliance and pop-in methods, for four high-strength steel alloys: PH 15-7 Mo, 17-7 PH, AM 350 and Vasco Jet 1000 (H-11). Fracture toughness values varied over a fairly wide range, with AM 350 having the highest at approximately 60.7 KSI in. and Vasco Jet 1000 (H-11) having the lowest at approximately 25 KSI in. A computer program used to reduce fracture toughness data was able to calculate critical crack length as well as fracture toughness when given either suitable compliance gage data or the measured test data. An acoustical pickup, used as an additional test monitor, is described. Analytical basis for the compliance method is presented.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1965
Accession Number
AD0487560

Entities

People

  • Dana C. Lagrone
  • Nathan G. Tupper
  • Roger M. Niemi
  • Sidney O. Davis.

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Alloys
  • Computer Programs
  • Computers
  • Contractors
  • Ferrium
  • Materials
  • Materials Laboratories
  • Steel
  • Tensile Properties
  • Toughness

Readers

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