Hydrogen Stress Cracking of High Strength Steels
Abstract
The report deals with hydrogen induced embrittlement and stress cracking of high strength steel parts. Selected mechanical methods involving the different types of test specimens for the measurement of hydrogen embrittlement or delayed failure, and relevant methods for the quantitative determination of hydrogen extracted from embrittlement susceptible specimens are presented. Embrittlement resulting from pickling and chemical milling are considered. In addition, case studies of failures are included dealing with electroplated steel aircraft components, weldments, the petroleum industry, parts installed in boilers, pressurized water reactors, pressurized hydrogenation units, and parts cathodically protected. Different techniques for restoring ductility or preventing delayed failure are also included. A new thermodynamic approach to the interpretation of the hydrogen embrittlement phenomenon is offered and a number of variables which control the generation or minimization of hydrogen embrittlement is analyzed and discussed in the light of electrochemical kinetics.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 23, 1971
- Accession Number
- AD0740111
Entities
People
- Edward J. Jankowsky
- Philip Fischer
- Walter Beck
Organizations
- Naval Air Warfare Center Warminster