SYMPOSIA PAPER Published: 01 January 1988
STP27707S

Evaluating Steel Toughness Using Various Elastic-Plastic Fracture Toughness Parameters

Source

The elastic-plastic fracture toughness results for 185 single-specimen, unloading compliance tests from 32 plates of 13 steel grades [yield strengths 228 to 924 MPa (33 to 134 ksi)] are summarized. J-integral (JIc), crack-tip-opening displacement (CTOD), and tearing modulus (T) values are determined for each of these completely ductile behaving tests using the latest testing and evaluation procedures. Three J computational methods and two graphical evaluation techniques for JIc are investigated. The effects of these on the subsequent JIc and T values are established. Correlations between various J and CTOD based parameters are presented. In addition, correlations between J, CTOD, and T parameters and Charpy V-notch impact levels are established. The influence of the various computational and graphical methods and different elastic-plastic fracture toughness parameters upon metallurgical comparisons resulting from inclusion control in various steels is reported.

Author Information

Wilson, AD
Product Research, Lukens Steel Co., Coatesville, PA
Donald, JK
Fracture Technology Associates, Pleasant Valley, PA
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Details
Developed by Committee: E08
Pages: 144–168
DOI: 10.1520/STP27707S
ISBN-EB: 978-0-8031-5064-5
ISBN-13: 978-0-8031-1258-2