key: cord-0941495-mkgm38ac authors: Hardouin Duparc, Olivier B. M.; Lartigue-Korinek, Sylvie title: Interface science in JMS date: 2020-06-23 journal: J Mater Sci DOI: 10.1007/s10853-020-04947-2 sha: c2aaf7de1457a5aa88cd095730e709178b7d4309 doc_id: 941495 cord_uid: mkgm38ac nan Inasmuch as most crystalline solids we use are polycrystalline, the study of grain boundaries in materials is an important field of research in materials science. A more general term than grain boundaries is interfaces as it also includes boundaries between different types of materials, different metals, different ceramics, metals and ceramics, etc. Robert Cahn, the founder of Journal of Materials Science (JMS) has always been committed to the study of grain boundaries and once said that his 1953 work on twinning and deformation in a-uranium was ''probably the most fascinating research that I have ever been involved in.'' (see [1] ). Grain boundaries in synthetic materials are of course conceptually similar to grain boundaries or twins in (natural) minerals first studied by French and German scientists since the eighteenth century even if the two scientific communities rarely met (see [2] ). Many international scientific conferences have been organized in the field of grain boundaries since 1960 in France at Saclay, partly stimulated by the worldwide efforts to build nuclear plants in those decades. Several of these meetings led to marked proceedings books or special issues. These conferences were formalized into a triennal series of conferences bearing the name of IIB (iib), Intergranular and Interphase Interfaces in materials, conferences since 1989 in Paris. A specially dedicated journal, Interface Science, was edited by David Srolovitz from 1993 until 2004. Interface Science edited peer-reviewed regular articles submitted by iib2001 attendees, when previous IIB conference articles had simply appeared in proceedings books. Interface Science was then incorporated in JMS. Since 2005, JMS has published collections of archival papers from the iib meetings in special issues or sections; all papers undergo a full peer review of course, see Table 1 . With the progress in experimental and computational techniques bringing many new conceptual tools, as well as the advent of new materials with their own grain boundaries or interfaces, a three-year periodicity seemed a good choice to gather for mutual presentations of recent and new results and together discussions that always lead to new collaborations. The iib2019 conference took place during the first week of July 2019 in the Latin Quarter in Paris at the É cole de Chimie ParisTech, a School created by Charles Friedel, the famous chemist who also was a mineralogist and studied the relations between physical properties and twins from the point of view of symmetry. It was organized by the iib2019 organizing committee members and the international advisory board. Supported by the Société Française de Métallurgie et des Matériaux, it was sponsored by academic as well as industrial organizations that are gratefully acknowledged: É cole Polytechnique, Eloïse-Electron Optics Instrument Service, FERMI-Fédération pour l'Enseignement et la Recherche sur la Métallurgie en Ile de France, Minos-Materials Innovation for Nuclear Optimized Systems, Nanomegas-Advanced tools for electron diffraction, Nanosaclay-LABEX en nanosciences et nanotechnologies, Société Française des Microscopies-French Microscopy Society. Thanks to these sponsors, iib2019 invited eight speakers and offered reduced fees to about thirty students. It gathered about 180 participants from twenty countries, and welcomed 158 contributions (87 oral talks ? 71 posters) whose abstracts can be found in the booklet available in the iib2019.org a.k.a. https://iib.event-vert.org/ website. iib2019 was dedicated to Donald McLean (1915-2017) and Lasar Shvindlerman (1935 Shvindlerman ( -2018 . McLean published well cited articles in JMS [3, 4] , while Shvindlerman made 5 important contributions to JMS including [5, 6] . As previous IIB meetings, iib2019 gathered researchers from different communities all involved in understanding structure, chemistry and related properties of interfaces. The sessions encompassed grain boundary thermodynamics (atomic and electronic structure, segregation), grain boundary dynamics (diffusion corrosion, wetting, migration, phase transformation), interphase boundaries, mechanical properties, plasticity mechanisms, functional properties and low dimensional systems. The most recent peer-reviewed articles were published in JMS in 2020. We thank the numerous reviewers as well as the JMS teams who contributed to the process, specially taking into account the difficulties caused by the COVID-19 pandemic. The next meeting, iib2022, will take place in Beijing and will be chaired by Profs. Wenzheng Zhang and Rong Yu. A review of some elements in the history of grain boundaries, centered on Georges Friedel, the coincident 'site' lattice and the twin index Viscous flow of aligned composites Storage and loss moduli in discontinuous composites Cornerstones of grain structure evolution and stability: vacancies, boundaries, triple junctions Grain boundary excess free volume-direct thermodynamic measurement Publisher's Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations