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Title: Comparison of different experimental and analytical measures of the thermal annealing response of neutron-irradiated RPV steels

Abstract

The thermal annealing response of several materials as indicated by Charpy transition temperature (TT) and upper-shelf energy (USE), crack initiation toughness, K{sub Jc}, predictive models, and automated-ball indentation (ABI) testing are compared. The materials investigated are representative reactor pressure vessel (RPV) steels (several welds and a plate) that were irradiated for other tasks of the Heavy-Section Steel Irradiation (HSSI) Program and are relatively well characterized in the unirradiated and irradiated conditions. They have been annealed at two temperatures, 343 and 454 C (650 and 850 F) for varying lengths of time. The correlation of the Charpy response and the fracture toughness, ABI, and the response predicted by the annealing model of Eason et al. for these conditions and materials appears to be reasonable. The USE after annealing at the temperature of 454 C appears to recover at a faster rate than the TT, and even over-recovers (i.e., the recovered USE exceeds that of the unirradiated material).

Authors:
; ;  [1]
  1. Oak Ridge National Lab., TN (United States). Metals and Ceramics Div.
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
Nuclear Regulatory Commission, Washington, DC (United States)
OSTI Identifier:
474926
Report Number(s):
CONF-9706104-1
ON: TI97005997; TRN: 97:010421
DOE Contract Number:  
AC05-96OR22464
Resource Type:
Conference
Resource Relation:
Conference: 18. American Society for Testing Materials (ASTM) international symposium on effects of radiation on materials, Hyannis, MA (United States), 25-27 Jun 1997; Other Information: PBD: [1997]
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 22 NUCLEAR REACTOR TECHNOLOGY; ANNEALING; PHYSICAL RADIATION EFFECTS; STEELS; PRESSURE VESSELS; FRACTURE PROPERTIES; IMPACT STRENGTH; REACTOR MATERIALS; COMPARATIVE EVALUATIONS

Citation Formats

Iskander, S K, Sokolov, M A, and Nanstad, R K. Comparison of different experimental and analytical measures of the thermal annealing response of neutron-irradiated RPV steels. United States: N. p., 1997. Web.
Iskander, S K, Sokolov, M A, & Nanstad, R K. Comparison of different experimental and analytical measures of the thermal annealing response of neutron-irradiated RPV steels. United States.
Iskander, S K, Sokolov, M A, and Nanstad, R K. 1997. "Comparison of different experimental and analytical measures of the thermal annealing response of neutron-irradiated RPV steels". United States. https://www.osti.gov/servlets/purl/474926.
@article{osti_474926,
title = {Comparison of different experimental and analytical measures of the thermal annealing response of neutron-irradiated RPV steels},
author = {Iskander, S K and Sokolov, M A and Nanstad, R K},
abstractNote = {The thermal annealing response of several materials as indicated by Charpy transition temperature (TT) and upper-shelf energy (USE), crack initiation toughness, K{sub Jc}, predictive models, and automated-ball indentation (ABI) testing are compared. The materials investigated are representative reactor pressure vessel (RPV) steels (several welds and a plate) that were irradiated for other tasks of the Heavy-Section Steel Irradiation (HSSI) Program and are relatively well characterized in the unirradiated and irradiated conditions. They have been annealed at two temperatures, 343 and 454 C (650 and 850 F) for varying lengths of time. The correlation of the Charpy response and the fracture toughness, ABI, and the response predicted by the annealing model of Eason et al. for these conditions and materials appears to be reasonable. The USE after annealing at the temperature of 454 C appears to recover at a faster rate than the TT, and even over-recovers (i.e., the recovered USE exceeds that of the unirradiated material).},
doi = {},
url = {https://www.osti.gov/biblio/474926}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu May 01 00:00:00 EDT 1997},
month = {Thu May 01 00:00:00 EDT 1997}
}

Conference:
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