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Title: The effects of thermal annealing on fracture toughness of low upper-shelf welds

Abstract

Experimental results are presented from a study of the effects of thermal annealing on recovery of fracture toughness of low upper-shelf submerged-arc welds (weld designations 61W through 67W) from the Heavy-Section Steel Irradiation (HSSI) Program Second and Third Irradiation Series. Most of the study was conducted to evaluate the effects of annealing on the J-R curves of the submerged-arc welds. The recovery of fracture toughness in the transition range as the result of annealing was studied for welds 63W, 64, and 65W only. Compact specimens of 12.7- and 20.3-mm-thick (0.5T and 0.8T, respectively) were tested in this study. The specimens had been previously irradiated at the Oak Ridge National Laboratory (ORNL) Bulk Shielding Reactor. Each weld was irradiated to a certain value of neutron fluence in the range from 0.4 to 1.3 {times} 10{sup 19} neutrons/cm{sup 2} (> 1 MeV) in the average temperature range of 275 to 300 C. Annealing of the irradiated specimens was done at 454 C for 168 h. Fracture toughness tests were performed at temperatures selected to match those of the previously conducted unirradiated and irradiated tests.

Authors:
; ;  [1]
  1. Oak Ridge National Lab., TN (United States). Metals and Ceramics Div.
Publication Date:
Research Org.:
Oak Ridge National Lab., TN (United States)
Sponsoring Org.:
Nuclear Regulatory Commission, Washington, DC (United States)
OSTI Identifier:
195654
Report Number(s):
CONF-940657-10
ON: DE96005745; TRN: AHC29605%%29
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Technical Report
Resource Relation:
Conference: 17. symposium on effects of radiation on materials, Sun Valley, ID (United States), 20-23 Jun 1994; Other Information: PBD: [1994]
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 21 NUCLEAR POWER REACTORS AND ASSOCIATED PLANTS; PWR TYPE REACTORS; PRESSURE VESSELS; WELDED JOINTS; PHYSICAL RADIATION EFFECTS; MANGANESE STEELS; FRACTURE PROPERTIES; HEAT TREATMENTS; ARC WELDING; COPPER ADDITIONS; NICKEL ADDITIONS; MOLYBDENUM ADDITIONS; TRANSITION TEMPERATURE; EXPERIMENTAL DATA

Citation Formats

Sokolov, M.A., Nanstad, R.K., and Iskander, S.K.. The effects of thermal annealing on fracture toughness of low upper-shelf welds. United States: N. p., 1994. Web. doi:10.2172/195654.
Sokolov, M.A., Nanstad, R.K., & Iskander, S.K.. The effects of thermal annealing on fracture toughness of low upper-shelf welds. United States. doi:10.2172/195654.
Sokolov, M.A., Nanstad, R.K., and Iskander, S.K.. Sat . "The effects of thermal annealing on fracture toughness of low upper-shelf welds". United States. doi:10.2172/195654. https://www.osti.gov/servlets/purl/195654.
@article{osti_195654,
title = {The effects of thermal annealing on fracture toughness of low upper-shelf welds},
author = {Sokolov, M.A. and Nanstad, R.K. and Iskander, S.K.},
abstractNote = {Experimental results are presented from a study of the effects of thermal annealing on recovery of fracture toughness of low upper-shelf submerged-arc welds (weld designations 61W through 67W) from the Heavy-Section Steel Irradiation (HSSI) Program Second and Third Irradiation Series. Most of the study was conducted to evaluate the effects of annealing on the J-R curves of the submerged-arc welds. The recovery of fracture toughness in the transition range as the result of annealing was studied for welds 63W, 64, and 65W only. Compact specimens of 12.7- and 20.3-mm-thick (0.5T and 0.8T, respectively) were tested in this study. The specimens had been previously irradiated at the Oak Ridge National Laboratory (ORNL) Bulk Shielding Reactor. Each weld was irradiated to a certain value of neutron fluence in the range from 0.4 to 1.3 {times} 10{sup 19} neutrons/cm{sup 2} (> 1 MeV) in the average temperature range of 275 to 300 C. Annealing of the irradiated specimens was done at 454 C for 168 h. Fracture toughness tests were performed at temperatures selected to match those of the previously conducted unirradiated and irradiated tests.},
doi = {10.2172/195654},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Dec 31 00:00:00 EST 1994},
month = {Sat Dec 31 00:00:00 EST 1994}
}

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