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Correlation of Instrumented Charpy Load-Displacement Curves with Crack Growth in API 5L Grade X80 Pipeline Steels

  • V. Khotinov
  • V. Farber
  • A. Morozova
Chapter
Part of the Innovation and Discovery in Russian Science and Engineering book series (IDRSE)

Abstract

The correlation of instrumented Charpy data analysis with fracture mechanisms in API 5L grade X80 pipeline steels has been investigated. Optical fracture analysis has shown solely the occurrence of ductile zones on a fracture surface: shear zone LC, “lamellar” zone LB with separations, and shear lips λ. New parameters of smoothed instrumented impact load vs. displacement curves are suggested for the characterization of impact properties. Co-analysis of the instrumented impact test curves and fracture surface zones allows evaluating crack resistance in addition to standard required characteristics (Charpy toughness, transition temperature, impact yield strength, etc.).

Keywords

Instrumented Charpy test Fracture surface Crack propagation zones API X80 steel 

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • V. Khotinov
    • 1
  • V. Farber
    • 1
  • A. Morozova
    • 1
  1. 1.Institute of Materials Science and MetallurgyUral Federal UniversityYekaterinburgRussia

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