On October 21,2025, Professor Daolun Chen, Fellow of the Royal Society of Canada (FRSC) and the Canadian Academy of Engineering (FCAE), and Professor at Toronto Metropolitan University, was invited to visit the School of Materials Science and Engineering and the National Engineering Research Center for Magnesium Alloy Materials at Chongqing University for academic exchange and deliver a keynote lecture. Academician Fusheng Pan met with Professor Chen and held discussions on recent research progress.
Onthe afternoon of October 21, Professor Chen delivered a lecture titled “Unraveling the Mystery of Binary Dislocation Locks” at the Frontiers in Engineering Science Forum held in the Academic Lecture Hall of the School of Materials, Campus B of Chongqing University. The session was chaired by Professor Xianhua Chen, Dean of the School of Materials Science and Engineering, and was attended by nearly one hundred faculty members and graduate students. Professor Xianhua Chen first extended a warm welcome to Academician Chen and introduced his distinguished academic background and research achievements.
Inhis lecture, Academician Chen focused on the identification of binary dislocation lock systems in face-centered cubic materials. He emphasized that dislocation reactions and interactions are fundamental to plastic deformation and strengthening in crystalline materials. Despite the advances in high-resolution transmission electron microscopy and molecular dynamics simulations, researchers have long struggled to identify the types of dislocation locks that exist in face-centered cubic materials. To address this challenge, Professor Chen’s team pioneered a research approach based on discrete mathematics, systematically analyzing dislocation reactions under two representative configurations and successfully achieving precise identification of binary dislocation locks. Furthermore, his group innovatively proposed a new definition of “immobility” for dislocation locks, introducing a novel metric to characterize their mobility resistance, derived from the orientation difference between non-close-packed locking planes and close-packed slip planes.
Throughoutthe lecture, Academician Chen not only elaborated on the technical details of his research but also discussed its broader implications in the field of materials science, providing attendees with new perspectives and methodologies for future exploration. During the interactive session, he engaged actively with the audience, offering thoughtful and detailed responses that deepened attendees’ understanding of the topic.At the conclusion of the event, Professor Xianhua Chen expressed sincere appreciation to Academician Daolun Chen for his enlightening presentation and, on behalf of the Faculty of Engineering, presented him with a commemorative plaque of the Frontiers in Engineering Science Forum. The lecture was also attended by Professor Xianquan Jiang from Southwest University, Professor Aitao Tang from Chongqing University’s National Magnesium Center, and Professor Houwen Chen, Vice Dean of the School of Materials Science and Engineering, also attended.
International Mg Society