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Stability of thermally induced copper precipitates under neutron irradiation

Abstract

Model Fe 1.3%Cu and Fe 1.3%Cu 1.1%Ni alloys have been thermally aged at 550 C for 2 hours (peak) and 10 hours prior to irradiation at 288 C to a dose of 5.10{sup 22} n/m{sup 2}. Results of a microstructural investigation using dedicated field emission gun scanning transmission electron microscopy (FEGSTEM) and small angle neutron scattering (SANS) to assess precipitate stability in the binary alloy, are presented. These data are then used to predict a hardness change as a result of copper precipitation for comparison with the measured values obtained using standard 5 kg Vickers hardness tests on the SANS samples. Implications of these data to the re-embrittlement of the RPV by subsequent copper precipitation is discussed. (authors). 16 refs., 5 figs., 5 tabs.
Authors:
Phythian, W J; Dumbill, S; Brown, P; Sinclair, R [1] 
  1. AEA Technology, Harwell (United Kingdom)
Publication Date:
Dec 31, 1993
Product Type:
Conference
Report Number:
NEA-CSNI-R-94-1; CONF-9309237-
Reference Number:
SCA: 360106; 360102; PA: AIX-28:029676; EDB-97:055547; SN: 97001764673
Resource Relation:
Conference: International Atomic Energy Agency (IAEA) specialist meeting on irradiation embrittlement and optimization of annealing, Paris (France), 20-23 Sep 1993; Other Information: PBD: 1993; Related Information: Is Part Of Irradiation embrittlement and optimisation of annealing; PB: 292 p.
Subject:
36 MATERIALS SCIENCE; STEELS; COPPER; PHYSICAL RADIATION EFFECTS; AGE HARDENING; CHEMICAL COMPOSITION; EMBRITTLEMENT; MECHANICAL PROPERTIES; MICROSTRUCTURE; NEUTRON FLUENCE; PRECIPITATION; PRESSURE VESSELS; SMALL ANGLE SCATTERING; STABILITY; TRANSMISSION ELECTRON MICROSCOPY; WELDED JOINTS
OSTI ID:
455774
Research Organizations:
Nuclear Energy Agency, 75 - Paris (France). Committee on the Safety of Nuclear Installations
Country of Origin:
NEA
Language:
English
Other Identifying Numbers:
Other: ON: DE97620233; TRN: XN9600151029676
Availability:
INIS; OSTI as DE97620233
Submitting Site:
INIS
Size:
pp. 1-8
Announcement Date:

Citation Formats

Phythian, W J, Dumbill, S, Brown, P, and Sinclair, R. Stability of thermally induced copper precipitates under neutron irradiation. NEA: N. p., 1993. Web.
Phythian, W J, Dumbill, S, Brown, P, & Sinclair, R. Stability of thermally induced copper precipitates under neutron irradiation. NEA.
Phythian, W J, Dumbill, S, Brown, P, and Sinclair, R. 1993. "Stability of thermally induced copper precipitates under neutron irradiation." NEA.
@misc{etde_455774,
title = {Stability of thermally induced copper precipitates under neutron irradiation}
author = {Phythian, W J, Dumbill, S, Brown, P, and Sinclair, R}
abstractNote = {Model Fe 1.3%Cu and Fe 1.3%Cu 1.1%Ni alloys have been thermally aged at 550 C for 2 hours (peak) and 10 hours prior to irradiation at 288 C to a dose of 5.10{sup 22} n/m{sup 2}. Results of a microstructural investigation using dedicated field emission gun scanning transmission electron microscopy (FEGSTEM) and small angle neutron scattering (SANS) to assess precipitate stability in the binary alloy, are presented. These data are then used to predict a hardness change as a result of copper precipitation for comparison with the measured values obtained using standard 5 kg Vickers hardness tests on the SANS samples. Implications of these data to the re-embrittlement of the RPV by subsequent copper precipitation is discussed. (authors). 16 refs., 5 figs., 5 tabs.}
place = {NEA}
year = {1993}
month = {Dec}
}