SYMPOSIA PAPER Published: 01 January 1965

Fracture Toughness Testing in Alloy Development


In the past five years, fracture mechanics has been used as a basis for the evaluation of the fracture toughness of high-strength steels and other high-strength alloys. Some of the considerations involved in the selection of plane-strain fracture toughness as the most appropriate and significant parameter for ultrahigh-strength alloy steel development are discussed in this paper.

The contribution of fracture mechanics to steel research and development is illustrated by brief reviews of three investigations: (1) a study of the relationships between microstructure and toughness in quenched and tempered low-alloy ultrahigh-strength steels, (2) an investigation of the effect of sulfur level on the fracture toughness of AISI 4345 alloy steel, and (3) a study of the influence of banding on fracture toughness anisotropy in a maraging steel.

Author Information

Wei, RP
Applied Research Laboratory, U.S. Steel Corp., Monroeville, Pa.
Price: $25.00
Contact Sales
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Developed by Committee: E08
Pages: 279–289
DOI: 10.1520/STP26594S
ISBN-EB: 978-0-8031-4569-6
ISBN-13: 978-0-8031-0105-0