Transmission electron analysis of dislocation loops in T91 steels from MEGAPIE and MIRE irradiation experiments

被引：8

作者：

Van Renterghem, W. ^{[1
]}

Terentyev, D. ^{[1
]}

Konstantinovic, M. J. ^{[1
]}

机构：

[1] SCK CEN, Ctr Etud Energie Nucl, Studiectr Kernenergie, Boeretang 200, B-2400 Mol, Belgium

来源：

JOURNAL OF NUCLEAR MATERIALS | 2018年 / 506卷

关键词：

Neutron irradiation; T91; steel; Transmission electron microscopy; Dislocation loop distribution; KINETIC MONTE-CARLO; MECHANICAL-PROPERTIES; FERRITIC/MARTENSITIC STEELS; SPALLATION TARGET; RADIATION-DAMAGE; ALPHA-IRON; FE; NEUTRON; ALLOYS; EVOLUTION;

D O I：

10.1016/j.jnucmat.2017.10.045

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

T91 steel samples were irradiated in both a neutron and a neutron plus proton irradiation environments, and the resulting microstructure was studied using transmission electron microscopy. Three samples were irradiated with neutrons and protons to a cumulative dose of 0.88, 2.07, and 4.35 dpa at temperatures of 254 degrees C, 260 degrees C and 320-350 degrees C, respectively and two samples were irradiated with neutrons to 0.6 and 1 dpa, at a temperature of 290 degrees C for comparison. Radiation induced dislocation loops were observed in both groups of samples. In all samples irradiated up to 1 dpa, irrespective of irradiation conditions, dislocation loops were segregated near the line dislocations, forming a clear heterogeneous distribution. In the high dose sample, on the other hand, they were uniformly distributed over the grain interior and the middle dose sample showed a mixed character. Voids of similar average size were only observed in the middle and high dose samples, and their appearance seems to be correlated with the onset of homogeneous loop distribution. The observed defect properties are rationalized on the basis of modeling results. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：43 / 52

页数：10

共 52 条

[1]

Abderrahim HamidAit., 2010, Nuclear Physics News, V20, P24, DOI DOI 10.1080/10506890903178913

[2]

[Anonymous], 2001, HIGH CHROMIUM FERRIT

[3] Observation of the one-dimensional diffusion of nanometer-sized dislocation loops [J].

Arakawa, K. ;

Ono, K. ;

Isshiki, M. ;

Mimura, K. ;

Uchikoshi, M. ;

Mori, H. .

SCIENCE, 2007, 318 (5852) :956-959

[4] MEGAPIE, a 1 MW pilot experiment for a liquid metal spallation target [J].

Bauer, GS ;

Salvatores, M ;

Heusener, G .

JOURNAL OF NUCLEAR MATERIALS, 2001, 296 :17-33

[5] Modeling the long-term evolution of the primary damage in ferritic alloys using coarse-grained methods [J].

Becquart, C. S. ;

Barbu, A. ;

Bocquet, J. L. ;

Caturla, M. J. ;

Domain, C. ;

Fu, C-C. ;

Golubov, S. I. ;

Hou, M. ;

Malerba, L. ;

Ortiz, C. J. ;

Souidi, A. ;

Stoller, R. E. .

JOURNAL OF NUCLEAR MATERIALS, 2010, 406 (01) :39-54

[6]

Bragado I.M., 2013, COMPUT PHYS COMMUN, V184, P2703

[7]

Bragado T. D. I. M., 2015, SCRIPTA MATER, V97, P5

[8] Microstructural characterization of Eurofer-97 and Eurofer-ODS steels before and after multi-beam ion irradiations at JANNUS Saclay facility [J].

Brimbal, Daniel ;

Beck, Lucile ;

Troeber, Oliver ;

Gaganidze, Ermile ;

Trocellier, Patrick ;

Aktaa, Jarir ;

Lindau, Rainer .

JOURNAL OF NUCLEAR MATERIALS, 2015, 465 :236-244

[9] Effect of Cr content on the nanostructural evolution of irradiated ferritic/martensitic alloys: An object kinetic Monte Carlo model [J].

Chiapetto, M. ;

Malerba, L. ;

Becquart, C. S. .

JOURNAL OF NUCLEAR MATERIALS, 2015, 465 :326-336

[10] Non-destructive testing of the MEGAPIE target [J].

Dai, Y. ;

Wohlmuther, M. ;

Boutellier, V. ;

Hahl, S. ;

Lagotzki, A. ;

Leu, H. ;

Linder, H. P. ;

Schwarz, R. ;

Spahr, A. ;

Zanini, L. ;

Kuster, D. ;

Gavillet, D. ;

Wagner, W. .

JOURNAL OF NUCLEAR MATERIALS, 2016, 468 :221-227

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