SYMPOSIA PAPER Published: 01 January 1987
STP33857S

Compositional Redistribution in Fe-Ni-Cr Alloys Under Proton Irradiation

Source

The compositional redistribution in the direction of depth in austenitic Fe-Ni-Cr-Si-C alloys under 200-keV proton irradiation was examined experimentally using the cross-section technique. After the solution-annealed Fe-25.5Ni-14.7Cr-0.97Si-0.026C and Fe-25.7Ni-14.5Cr-2.85Si-0.026C alloys were irradiated at 873 K by 200-keV protons to the dose of 175 dpa at the peak-damage position for the different irradiation times of 0.1 and 1.37 Ms, the depth profile of composition was measured with an energy dispersive X-ray microanalyzer. Significant depletion of nickel and enrichment of chromium were observed in the peak-damage region ranging from about 0.85 to 1.05 μm in depth, similarly in both the short-time (0.1 Ms) and long-time (1.37 Ms) irradiations. Slight enrichment of iron and slight depletion of silicon were also observed in the peak-damage region. The observed compositional changes in the peak-damage region is in good qualitative agreement with theoretical prediction, although some quantitative discrepancies between them remain.

Author Information

Kimoto, T
National Research Institute for Metals, 1-2-1 Sengen, Sakura-mura, Niihari-gun, Ibaraki, Japan
Shiraishi, H
National Research Institute for Metals, 1-2-1 Sengen, Sakura-mura, Niihari-gun, Ibaraki, Japan
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Developed by Committee: E10
Pages: 748–757
DOI: 10.1520/STP33857S
ISBN-EB: 978-0-8031-5016-4
ISBN-13: 978-0-8031-0962-9