The Influence of Strain on Hydrogen Entry, Transport, and Embrittlement of a High Strength Steel in Aqueous Sodium Chloride Solution.
Abstract
The deleterious effect of hydrogen on the cracking susceptibility of engineering alloys has been well known for over one hundred years. Particularly in the case of high strength steels, hydrogen embrittlement susceptibility has been strongly influenced by two critical factors. These factors are a critical hydrogen content and a critical state of stress. The influence of mechanical strain, especially plastic deformation, on alloy susceptibility is significantly less well understood. Recent empirical observations of increased susceptibility when small transient, periodic, or continuous strains are added to large static stresses have intensified interest in the overall problem. The objective of this investigation is to clarify the mechanism by which plastic deformation affects hydrogen entry, diffusion, and the cracking resistance of a high strength steel exposed in aqueous sodium chloride solution. Keywords: Hydrogen embrittlement, Diffusion, Solubility, Permeation, Hydrogen adsorption, Trapping, Film rupture, Dislocations, Hydrogen absorption, Delayed cracking, Ductility.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1987
- Accession Number
- ADA189302
Entities
People
- David W Taylor
- John R. Scully
- Patrick J. Moran