SYMPOSIA PAPER Published: 01 January 1985

Transmission Electron Microscope Studies and Microhardness Testing of Irradiated Ferritic Steels


Model alloys of ferritic steels were irradiated to a low fluence of 1 × 1023 neutrons (n)/m2 at temperatures 544, 580, and 599 K. These alloys were pure iron, Fe-0.1C, Fe-0.1C-0.15Cu, and Fe-0.1C-0.28Cu. Specific attention was given to the copper-containing alloys in correlating microstructural changes as observed in the transmission electron microscope (TEM) with hardness changes measured using Vickers microhardness tests. The post-irradiation microstructure did not exhibit characteristic radiation damage; no voids, bubbles, or dislocation loops were observed. The hardness changes were related to the semi-quantitatively obtained amount of copper not bound in TEM-observable copper-containing precipitates. The copper unaccounted for in observed precipitates was shown to be the primary influence on hardness changes.

Author Information

Hulett, DK
University of Virginia, Charlottesville, VA
Jesser, WA
University of Virginia, Charlottesville, VA
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Developed by Committee: E10
Pages: 151–166
DOI: 10.1520/STP37359S
ISBN-EB: 978-0-8031-4935-9
ISBN-13: 978-0-8031-0450-1