Computer Simulation Of Radiation Damage In Fe3Al

Abstract

A computer simulation of the ordered Fe3Al lattice was devised. This lattice array consisted of 559 atoms interacting with two-body forces. To simulate radiation damage, a selected atom was given a known kinetic energy in a predetermined direction. The damage threshold in the [100] direction was found to be 22 eV while in the [110] direction the threshold was 44 eV. Vacancies and interstitials were found to be the normal stable defects, the interstitial residing in the split configuration oriented in the [110] direction. Replacement chains were prevalent in the [100] and [110] directions. Focusons served as the primary mechanism for dissipating energy from the collision chains in the [110] and [111] directions. Along a defocusing chain the energy dissipation appears to resemble a thermal spike, while near the end of the chain, especially in the [111] direction, there is an extensive lattice expansion due to energy dissipation which appears to give a plasticity spike. Disordering in the ordered alloy appears to be most significant along defocusing chains. © 1972, Taylor & Francis Group, LLC. All rights reserved.

Department(s)

Materials Science and Engineering

Second Department

Nuclear Engineering and Radiation Science

Comments

Atomic Energy Commission of Syria, Grant None

International Standard Serial Number (ISSN)

0031-8086

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2023 Taylor and Francis Group; Taylor and Francis; European Physical Society, All rights reserved.

Publication Date

01 Jan 1972

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