Effects of hydrogen on interaction between dislocation and radiation-induced defects
- 1. Inst. of Nuclear Safety System, Inc., Inst. of Nuclear Technology, Mihama, Fukui (Japan)
Description
To investigate effects of solute hydrogens on deformation localization due to irradiation, ion-irradiated stainless steels were tensiled under hydrogen gas atmosphere of 75MPa at 300degC and surface steps and cross sectional microstructures were observed and then the nanoindentation hardness was measured for specimens electrolytic hydrogen charged at the room temperature. It turned out that solute hydrogen diminishes the increase of surface step spacing due to irradiation, indicating that solute hydrogens suppress deformation localization due to irradiation. However, the fact that solute hydrogen significantly affects the interaction between dislocations and radiation-induced defects was not obvious in the microstructure observations. Solution hardening due to hydrogen solution was observed, so it was deduced that the increase of surface step spacing due to irradiation was diminished because solute hydrogens became inhibiting factor for dislocation movement. (author)
Additional details
Publishing Information
- Journal Title
- INSS Journal
- Journal Volume
- 17
- Journal Page Range
- p. 178-187
- ISSN
- 1340-4482
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 42103993
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- DEFECTS; DEFORMATION; DISLOCATIONS; HYDROGEN; ION BEAMS; MICROHARDNESS; MICROSTRUCTURE; PHYSICAL RADIATION EFFECTS; STAINLESS STEELS; TENSILE PROPERTIES
- Descriptors DEC
- ALLOYS; BEAMS; CARBON ADDITIONS; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; ELEMENTS; HARDNESS; HIGH ALLOY STEELS; IRON ALLOYS; IRON BASE ALLOYS; LINE DEFECTS; MECHANICAL PROPERTIES; NONMETALS; RADIATION EFFECTS; STEELS; TRANSITION ELEMENT ALLOYS
Optional Information
- Notes
- 13 refs., 11 figs., 2 tabs.