SYMPOSIA PAPER Published: 01 January 1989

Microchemistry and Mechanics Issues in Stress Corrosion Cracking


Environmentally induced subcritical crack growth occurs in most metallic ma terials given the appropriate material, environment, and stress conditions. Much is known about the conditions which cause stress corrosion cracking (SCC) in metallic materials, but much less is known about the processes which control environment-induced crack initiation and propagation. There is presently no description of the flaw length, flaw shape, and local chemistry conditions that coincide with the transition from a localized corrosion phenomenon and the initiation of a crack. Although there have been considerable attempts to describe the rate-limiting steps in crack propagation, a number of issues are unresolved, including specifics about the crack-tip conditions, crack length effects, processes controlling the Stage I SCC region, and details about the crack advance processes in both transgranular stress corrosion cracking (TGSCC) and intergranular stress corrosion cracking (IGSCC). A summary of these unresolved issues and some analysis of their effect on SCC is given in this paper.

Author Information

Jones, RH
Pacific Northwest Laboratory, Richland, WA
Danielson, MJ
Pacific Northwest Laboratory, Richland, WA
Baer, DR
Pacific Northwest Laboratory, Richland, WA
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: 209–232
DOI: 10.1520/STP18826S
ISBN-EB: 978-0-8031-5081-2
ISBN-13: 978-0-8031-1250-6