SYMPOSIA PAPER Published: 01 January 2000

Analysis of Stress-Induced Burgers Vector Anisotropy in Pressurized Tube Specimens of Irradiated Ferritic-Martensitic Steels: JFMS and JLF-1


A procedure for determining the Burgers vector anisotropy in irradiated ferritic steels is described, allowing identification of all a ⟨ 100 ⟩ and all a/2 ⟨ 111 ⟩ dislocations in a region of interest. The necessary micrographs to apply the procedure have been taken of a pressurized tube specimen of JFMS, a duplex ferritic steel following irradiation in FFTF/MOTA at 407°C to 7.5 × 1022 n/cm2 (E > 0.1 MeV) or 37.5 dpa, and a pressurized tube of JLF-1 irradiated at 430°C under similar conditions to 14.3 × 1022 n/cm2 (E > 0.1 MeV) or 60 dpa. Analysis of micrographs indicates that large anisotropy in Burgers vector populations develop during irradiation creep.

Author Information

Gelles, DS
Battelle Pacific Northwest National Laboratory, Richland, WA
Kimura, A
University of Kyoto, Kyoto, Japan
Shibayama, T
Hokkaido University, Sapporo, Japan
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Developed by Committee: E10
Pages: 535–547
DOI: 10.1520/STP12413S
ISBN-EB: 978-0-8031-5419-3
ISBN-13: 978-0-8031-2852-1