Invited Speaker

Abstract: Bifilm defect in casting was proposed by the famous scholar Prof. John Campbell about thirty years ago and has attracted numerous investigations coming from the community because it is deemed as the precursor of various macroscopic metallurgical defects and is widely discovered in different metallic systems. However, many aspects of bifilm defects such as morphology, composition and control process have never been explored in a state that they are kept inner of the casting (in-situ) so far, this prohibits the understanding of formation and evolution behaviors and mechanisms of them. The present talk will discuss these points based on our recent works of using varied advanced characterization techniques and studying methods to investigate the bifilms discovered in varied specific alloy castings. These results aroused updated understanding of bifilm defects in casting.

Biography: Dr. Zhang jointed the School of Materials Science and Engineering of Harbin Institute (HIT) of Technology before that he worked at Nanjing University and Pohang University of Science and Technology (POSTECH) as postdoctoral researcher, followed by working as associate researcher in POSTECH and visit scientist in MaxPlanck Institute of Chemical Physics for Solids (MPI cfps). Now the main research interests of Dr. Zhang include the synthesis and novel properties modulation of emergent quantum materials, and the microscale behaviors of solidification and crystalline. He has developed the epitaxial method for metal stable compounds and reported the electronic transport evidence of the semimetal state of iridates and observed topological hall effect in the magnetic heterostructure of iridates. Dr. Zhang has published 43 scientific papers in journals including Nature communications, Physical Review Letters, Critical Reviews in Solid State and Materials Sciences, Physical Review B, ACS Applied Materials and Interfaces, Scripta Materialia and is the referee of journals such as Applied Physics review, Materials Science and Engineering A, Metallurgical and Materials Transactions B.