Open questions in nanosegregation

0474084 - FZÚ 2018 RIV CH eng C - Conference Paper (international conference)
Lejček, Pavel
Open questions in nanosegregation.
Materials Science Forum. Vol. 891. Zürich: Trans Tech Publications Ltd, 2017 - (Hornak, P.; Longauerova, M.; Zubko, P.), s. 3-10. ISBN 9783035710182. ISSN 0255-5476.
[International Symposium on Metallography and Materials Science /16./. Stará Lesná (SK), 20.04.2016-22.04.2016]
R&D Projects: GA ČR GBP108/12/G043
Institutional support: RVO:68378271
Keywords : nanosegregation * grain boundary segregation * ferritic iron * thermodynamics * Auger electron spectroscopy * theoretical calculations
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)

Despite nanosegregation of solutes at grain boundaries has been intensively studied in the past decades and numerous theoretical data as well as experimental values on characteristic energies and/or enthalpies and entropies exist some questions remain still unanswered. In this paper some of these questions – Which energetic quantities obtained in different ways, experimentally and theoretically, can be mutually compared? What is the segregation site of a solute in the grain boundary core? – are discussed in more detail. It will be shown that the entropy of grain boundary segregation plays an important and indisputable role in responding some issues and that understanding of its role will help us to elucidate fundamentals of the grain boundary segregation.
Permanent Link: http://hdl.handle.net/11104/0271194