J-Integral Characterization of Irradiated Stainless Steels.
Abstract
The J-integral was investigated as a method of characterizing the elastic plastic toughness level of structural materials used in advanced fast reactors. J is defined in an introductory sense, and several approximate methods for its evaluation on the basis of a single specimen test are highlighted. Initial J evaluations are presented for irradiated 304 stainless steel in the annealed and cold-worked conditions and for 308 stainless steel weld deposit. Results indicate that cold-worked material will exhibit a significantly lower toughness than the annealed material in both irradiated and unirradiated conditions. Radiation significantly degrades the toughness of the annealed material while showing relatively little effect on the cold-worked specimens. The toughness of the unirradiated weld deposit is shown to be significantly less than that of the unirradiated plate. Finally, practical difficulties relating to a meaningful interpretation of the observed behavior are discussed as areas where current research efforts should be directed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 25, 1973
- Accession Number
- AD0761611
Entities
People
- E. J. Loss
- R. A. Gray Jr.
Organizations
- United States Naval Research Laboratory