SYMPOSIA PAPER Published: 01 January 1989

Environmentally Assisted Crack Growth in Structural Alloys: Perspectives and New Directions


Environmentally assisted crack growth (namely, stress corrosion cracking and corrosion fatigue) in alloys is one of the principal determining factors for durability and reliability of engineering structures. Over the past 20 years, activities in this area have transformed from screening and qualitative characterizations of the phenomena to quantitative assessment and scientific understanding. This work has enabled the recent development of life-prediction procedures.

In this paper, the contributions of fracture mechanics in this transformation are reviewed. Current mechanistic understanding of environmentally assisted crack growth by hydrogen embrittlement is summarized, and is placed in perspective. Applications to mitigate stress corrosion and corrosion fatigue cracking in marine environments are summarized. Outstanding issues and new directions for research are discussed.

Author Information

Wei, RP
Sinclair Laboratory #7, Lehigh University, Bethlehem, PA
Gangloff, RP
Thomas Hall, University of Virginia, Charlottesville, VA
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Developed by Committee: E08
Pages: 233–264
DOI: 10.1520/STP18827S
ISBN-EB: 978-0-8031-5081-2
ISBN-13: 978-0-8031-1250-6