TY - JOUR
T1 - Self-interstitial atoms at high temperatures in dense metals
AU - Nordlund, K.
AU - Averback, R. S.
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2001
Y1 - 2001
N2 - It has long been clear that vacancies are usually the most abundant defect in equilibrium in most dense, close-packed metals. However, some important effects, such as the observed deviation of the diffusion coefficient from pure Arrhenius behaviour, can not be explained by invoking only a single vacancy. The most common explanation to the deviations is that also divacancies, and possibly even trivacancies, play a significant role. However, some evidence also indicate that interstitials could play a significant role. In this article, we review some recent work and our computer simulation results on this issue. Both the reviewed work and simulations point in the direction that the interstitial could be of major importance close to the melting temperature and during rapid heating. The results also strongly support the Granato model of liquids and solids.
AB - It has long been clear that vacancies are usually the most abundant defect in equilibrium in most dense, close-packed metals. However, some important effects, such as the observed deviation of the diffusion coefficient from pure Arrhenius behaviour, can not be explained by invoking only a single vacancy. The most common explanation to the deviations is that also divacancies, and possibly even trivacancies, play a significant role. However, some evidence also indicate that interstitials could play a significant role. In this article, we review some recent work and our computer simulation results on this issue. Both the reviewed work and simulations point in the direction that the interstitial could be of major importance close to the melting temperature and during rapid heating. The results also strongly support the Granato model of liquids and solids.
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U2 - 10.4028/www.scientific.net/ddf.188-190.59
DO - 10.4028/www.scientific.net/ddf.188-190.59
M3 - Article
AN - SCOPUS:0035130077
SN - 1012-0386
VL - 188-190
SP - 59
EP - 70
JO - Diffusion and Defect Data. Pt A Defect and Diffusion Forum
JF - Diffusion and Defect Data. Pt A Defect and Diffusion Forum
ER -