Heavy ion irradiation induced dislocation loops in AREVA's M5® alloy

被引：76

作者：

Hengstler-Eger, R. M. ^{[1
]}

Baldo, P. ^{[2
]}

Beck, L. ^{[3
]}

Dorner, J. ^{[4
]}

Ertl, K. ^{[4
]}

Hoffmann, P. B. ^{[1
]}

Hugenschmidt, C. ^{[5
]}

Kirk, M. A. ^{[2
]}

Petry, W. ^{[5
]}

Pikart, P. ^{[5
]}

Rempel, A. ^{[1
]}

机构：

[1] AREVA NP GmbH, AREVA, D-91052 Erlangen, Germany

[2] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA

[3] MLL, D-85748 Garching, Germany

[4] Max Planck Inst Plasma Phys, D-85748 Garching, Germany

[5] Forsch Neutronenquelle Heinz Maier Leibnitz FRM I, D-85747 Garching, Germany

来源：

JOURNAL OF NUCLEAR MATERIALS | 2012年 / 423卷 / 1-3期

关键词：

ZIRCONIUM SINGLE-CRYSTALS; C-COMPONENT DISLOCATIONS; BEAM FACILITY NEPOMUC; WT-PERCENT NB; POSITRON BEAM; ELECTRON-IRRADIATION; HIGH-INTENSITY; POINT-DEFECTS; HCP METALS; ALPHA-ZR;

D O I：

10.1016/j.jnucmat.2012.01.002

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Pressurized water reactor (PWR) Zr-based alloy structural materials show creep and growth under neutron irradiation as a consequence of the irradiation induced microstructural changes in the alloy. A better scientific understanding of these microstructural processes can improve simulation programs for structural component deformation and simplify the development of advanced deformation resistant alloys. As in-pile irradiation leads to high material activation and requires long irradiation times, the objective of this work was to study whether ion irradiation is an applicable method to simulate typical PWR neutron damage in Zr-based alloys, with AREVA's M5 (R) alloy as reference material. The irradiated specimens were studied by electron backscatter diffraction (EBSD), positron Doppler broadening spectroscopy (DBS) and in situ transmission electron microscopy (TEM) at different dose levels and temperatures. The irradiation induced microstructure consisted of < a >- and < c >-type dislocation loops with their characteristics corresponding to typical neutron damage in Zr-based alloys: it can thus be concluded that heavy ion irradiation under the chosen conditions is an excellent method to simulate PWR neutron damage. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：170 / 182

页数：13

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