Evaluation of advanced reactor pressure vessel steels under neutron irradiation

Conference · Fri Jan 01 00:00:00 EST 1982 · Am. Soc. Test. Mater., Spec. Tech. Publ.; (United States)

OSTI ID:5836151

Davies, L M ^[1]; Ingham, T; Squires, R L

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1. United Kingdom Atomic Energy Authority, London, England

The objective of the work described in this paper is to assess the radiation behavior of improved steels and weldments, produced in various countries. Three of the materials supplied by France and Japan to the IAEA program have been irradiated at 290 and/or 250/sup 0/C in the HERALD light water research reactor to assess the mechanical and upper shelf toughness properties after exposure to neutron fluences of approx. 1 x 10/sup 19/ n.cm/sup 2/ (E > 1 MeV). A fourth material, a weld supplied by the UK, has been included in the program for reference. Supplementary test methods used in the evaluation include hardness tests, chemical analyses, electron microscopy and positron annihilation. Results indicate that the improved steels are more resistant to radiation induced embrittlement compared to both the UK reference material and published data on older steels. The mechanistic understanding of irradiation embrittlement is becoming increasingly important particularly in terms of deriving a damage correlation model. The data from the supplementary tests are making a significant contribution towards this objective.

• OSTI ID: 5836151
• Report Number(s): CONF-820628-
• Journal Information: Am. Soc. Test. Mater., Spec. Tech. Publ.; (United States), Vol. 782; Conference: 11. international symposium on effects of radiation on materials, American Society for Testing and Materials, Scottsdale, AZ, USA, 28 Jun 1982
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
STEEL-ASTM-A508
PHYSICAL RADIATION EFFECTS
WELDED JOINTS
CHARPY TEST
EMBRITTLEMENT
FAST NEUTRONS
HERALD REACTOR
NEUTRON FLUENCE
PRESSURE VESSELS
ALLOYS
BARYONS
CONTAINERS
DESTRUCTIVE TESTING
ELEMENTARY PARTICLES
ENRICHED URANIUM REACTORS
FERMIONS
HADRONS
IMPACT TESTS
IRON ALLOYS
IRON BASE ALLOYS
JOINTS
MATERIALS TESTING
MECHANICAL TESTS
NEUTRONS
NUCLEONS
POOL TYPE REACTORS
RADIATION EFFECTS
REACTORS
RESEARCH AND TEST REACTORS
RESEARCH REACTORS
STEELS
TEST REACTORS
TESTING
THERMAL REACTORS
WATER COOLED REACTORS
WATER MODERATED REACTORS
360106* - Metals & Alloys- Radiation Effects