High-dose neutron irradiation embrittlement of RAFM steels

被引：54

作者：

Gaganidze, E. ^{[1
]}

Schneider, H. -C. ^{[1
]}

Dafferner, B. ^{[1
]}

Aktaa, J. ^{[1
]}

机构：

[1] Forschungszentrum Karlsruhe, Inst Mat Forsch 2, D-76021 Karlsruhe, Germany

来源：

JOURNAL OF NUCLEAR MATERIALS | 2006年 / 355卷 / 1-3期

基金：

欧盟地平线“2020”;

关键词：

D O I：

10.1016/j.jnucmat.2006.04.014

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Neutron irradiation-induced embrittlement of the reduced-activation ferritic/martensitic (RAFM) steel EUROFER97 was studied under different heat treatment conditions. Irradiation was performed in the Petten High Flux Reactor within the HFR Phase-IIb (SPICE) irradiation project up to 16.3 dpa and at different irradiation temperatures (250-450 degrees C). Several reference RAFM steels (F82H-mod, OPTIFER-Ia, GA3X and MANET-1) were also irradiated at selected temperatures. The impact properties were investigated by instrumented Charpy-V tests with subsize specimens. Embrittlement and hardening of as-delivered EUROFER97 steel are comparable to those of reference steels. Heat treatment of EUROFER97 at a higher austenitizing temperature substantially improves the embrittlement behaviour at low irradiation temperatures. Analysis of embrittlement in terms of the parameter C = Delta DBTT/Delta sigma indicates hardening-dominated embrittlement at irradiation temperatures below 350 degrees C with 0.17 <= C <= 0.53 degrees C/MPa. Scattering of C at irradiation temperatures above 400 degrees C indicates no hardening embrittlement. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：83 / 88

页数：6

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