SYMPOSIA PAPER Published: 01 January 1987
STP33865S

Separation of Alloy Components in the Vicinity of a Collision Cascade

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The production of solute enriched (or depleted) regions has been observed in Fe3Al, Cu5Zn8, and Ni5Zn21 subject to neutron irradiation. The formation of those regions is due to the separation of the alloy components in the path of the atomic collision cascade, at the thermal stage of its development. A mechanism of formation of a region of different concentration in the collision cascade is proposed. Analyses of the kinetics of recovery of the in-cascade induced defect distribution show that the annealing of that damage can lead to the redistribution of the alloy components. Enrichment of one atomic species results in the depleted zone. The preferential flux of an atomic species toward the depleted zone is determined by the difference in the atomic mobilities and the characteristics of the interstitial configurations and migration mechanisms. A computer simulation of the separation confirmed the possibility of precipitation of a new phase at a sink, such as a depleted zone, which exists for a very short period of time.

Author Information

Ibragimov, SS
Institute of Nuclear Physics, Academy of Sciences of KazSSR, Alma-Ata, USSR
Kirsanov, VV
Institute of Nuclear Physics, Academy of Sciences of KazSSR, Alma-Ata, USSR
Melinkhov, VD
Institute of Nuclear Physics, Academy of Sciences of KazSSR, Alma-Ata, USSR
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Details
Developed by Committee: E10
Pages: 847–854
DOI: 10.1520/STP33865S
ISBN-EB: 978-0-8031-5016-4
ISBN-13: 978-0-8031-0962-9