THE MECHANISM OF HYDROGEN EMBRITTLEMENT OBSERVED IN IRON-SILICON SINGLE CRYSTALS
Abstract
The technique of decorating dislocations was employed to investigate plastic deformation and fracture resulting from precipitation of H in Fe3% Si single crystals. It is shown that cracks are produced on (100) planes inside crystals quenched from H atmosphere at elevated temperatures or cathodically charged with H at room temperature. Plastic deformation in the vicinity of cracks, observed as arrays of decorated dislocations, is in conformity with previously calculated stress distributions about a crack containing an internal pressure. The fracture characteristics of crystals containing internal cracks were evaluated at 25 and -196 C and the results are related to the mechanism of hydrogen embrittlement. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1961
- Accession Number
- AD0263702
Entities
People
- A.s. Tetelman
- W.d. Robertson
Organizations
- Yale University