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@article{1734696,
author = {Lejček, Pavel and Hofmann, S. and Všianská, Monika and Šob, Mojmír},
article_location = {Oxford},
article_number = {March 2021},
doi = {http://dx.doi.org/10.1016/j.actamat.2020.116597},
keywords = {Segregation; Grain boundaries; Entropy; Compensation effect},
language = {eng},
issn = {1359-6454},
journal = {Acta Materialia},
title = {Entropy matters in grain boundary segregation},
url = {https://doi.org/10.1016/j.actamat.2020.116597},
volume = {206},
year = {2021}
}
TY - JOUR
ID - 1734696
AU - Lejček, Pavel - Hofmann, S. - Všianská, Monika - Šob, Mojmír
PY - 2021
TI - Entropy matters in grain boundary segregation
JF - Acta Materialia
VL - 206
IS - March 2021
SP - 1-12
EP - 1-12
PB - Pergamon-Elsevier Science Ltd
SN - 13596454
KW - Segregation
KW - Grain boundaries
KW - Entropy
KW - Compensation effect
UR - https://doi.org/10.1016/j.actamat.2020.116597
L2 - https://doi.org/10.1016/j.actamat.2020.116597
N2 - Starting with a fairly comprehensive database on experimental results on enthalpy and entropy of grain boundary segregation, the detrimental influence of ignoring the segregation entropy term is shown for the latter as well as for additional examples of intergranular cohesion, the stability of nanograin size, and the segregation enthalpy-segregation entropy compensation effect. Furthermore, the decisive role of segregation entropy in the transition from substitutional to interstitial segregation with increasing temperature, and the newly explored effect of entropy-dominated grain boundary segregation are presented. Despite the direct evidence of the importance of entropy in grain boundary segregation, its contribution has been frequently neglected in the literature. One of the possible reasons is that the routines for a theoretical determination of the segregation entropy are still missing. We hope that, in the near future, progress in advanced theoretical methods will substantially improve our present understanding of grain boundary segregation.
ER -
LEJČEK, Pavel, S. HOFMANN, Monika VŠIANSKÁ a Mojmír ŠOB. Entropy matters in grain boundary segregation. \textit{Acta Materialia}. Oxford: Pergamon-Elsevier Science Ltd, 2021, roč.~206, March 2021, s.~1-12. ISSN~1359-6454. Dostupné z: https://dx.doi.org/10.1016/j.actamat.2020.116597.
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