Significance of copper, phosphorus, and sulfur content to radiation sensitivity and postirradiation heat treatment of A302-B steel. Final report

Technical Report · Thu Apr 12 04:00:00 EST 1979

OSTI ID:5509785

Hawthorne, J R

The effects of three levels of copper content and phosphorus content and two levels of sulfur content on radiation sensitivity and postirradiation heat tratment response were explored for a reactor pressure vessel steel, Type A302-B. Test plates for the investigation were produced from 182-kg (400-lb) laboratory melts. The contributions of individual elements were assessed from Charpy-V (C sub v) notch ductility changes with 288 C (550 F) irradiation and with a 343 C (650 F)-168 h postirradiation heat treatment. Limited studies of properties recovery by postirradiation 399 c (750 f) heat treatment were also made. Radiation embrittlement sensitivity, as shown by C sub v transition-temperature elevation and C sub v upper-shelf reduction, generally increased with increased-copper and phosphorus content and with decreased sulfur content. Certain ranges of phosphorus and copper content were found to be more critical than others.

• Research Organization: Naval Research Lab., Washington, DC (USA)
• OSTI ID: 5509785
• Report Number(s): AD-A-068696
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360106* -- Metals & Alloys-- Radiation Effects
ALLOYS
CHARPY TEST
CONSTRUCTION
CONTAINERS
COPPER
DUCTILITY
ELEMENTS
EMBRITTLEMENT
FRACTURE PROPERTIES
HEAT TREATMENTS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MECHANICAL PROPERTIES
METALLURGICAL EFFECTS
METALS
NONMETALS
PHOSPHORUS
PHYSICAL RADIATION EFFECTS
PRESSURE VESSELS
RADIATION EFFECTS
REACTOR MATERIALS
STEEL-ASTM-A302
STEELS
SULFUR
TENSILE PROPERTIES
TRANSITION ELEMENTS