Theme I: Young researchers' challenges to ironmaking process
Chairpersons: H.Konishi (Osaka Univ.),T.Murakami (Tohoku Univ.)
It is expected that new processes will be developed in consideration of the Sustainable Development Goals (SDGs) such as carbon neutrality, active use of natural energy, and resource recycling in the ironmaking process. On the other hand, in order to realize carbon neutrality and save energy in existing processes, it is necessary to drastically improve the resources used as raw materials and fuels, or the entire process. Therefore, we invite young researchers who are expected to be active in this field to introduce their research to researchers and engineers of universities and companies that handle ironmaking processes. At the same time, we have planned a debate to talk about future prospects.

Theme II: Area-sensing-based condition monitoring of facilities in steelworks Part2
Chairpersons: I. Ishii (Hiroshima Univ.) , T. Ito (JFE)
Responding the growing attention to the advanced area sensing based on imaging technologies for abnormality diagnoses of wide variety of infrastructural facilities in the steel works, a Type II research group "Facilities in the steel works health monitoring based on area sensing technologies has been carried out since 2019. Last financial year, the research group finished studies as the group, so this workshop aims to discuss and summarize the results of the research group, and the summary of these studies will be shown because this research group was finished on this February.

Theme III: Phenomena and surface defects at the interface of rolled material during rolling
Chairpersons: A.Segawa (Kanazawa Inst. of Tech.),K.Komori (Daido Univ.)
Phenomena occurring at the interface between the roll and the workpiece during rolling have a large impact on the final product, and there are a wide range of issues to be investigated, including the effects of materials, rolling conditions, tribology, and oxide scale. In this session, the interfacial phenomena will be described experimentally and numerically, and the search for the causes of surface defects and preventive measures will be discussed.

Theme IV: Technological trends in steel pipes and energy fields
Chairpersons: M.Mizumura (National Inst. of Tech., Kure College), T.Okamoto (Nippon Steel)
Steel pipes are widely used in energy fields such as oil refining, plants, and power plants. In recent years, the use of pipes has become more and more innovated, and the demand for pipes in the energy industry is expected to increase in the future. We will explore future technology trends by discussing the relationship between the energy industry and steel pipe technology.

ThemeV: Investigation of bio-corrosion of structural materials - diagnosis and analysis - IV
Chairpersons: Y.Miyano (Akita Univ.), S.Wakai (JAMSTEC)
Proposal of new experimental method on visualization of biofilm formation and corrosion progress of metal surface, accumulation of new findings concerning microorganisms and their metabolite involved in bio-corrosion, and elucidation of bio-corrosion mechanism or development of counter measures / mitigation technology for bio-corrosion are considered to be the themes that contain important research topic of material science. In this discussion session, research from various field such as materials science, microbiology, and environmental chemistry will be presented and discussed.

ThemeVI: Toward controlling multi-phase structures in galvanized/aluminized coatings by hot-dip galvanizing process
Chairpersons: N.Takata (Nagoya Univ.), M.Ueda (Tokyo Inst. of Tech.), H. Takebayashi (Nippon Steel), K.Ishii (Nippon Steel), M.Koba (JFE), R. Otomo (Kobe Steel)
In recent years, hot-dip galvannealing (GA) and hot-dip galvanizing (GI) processes are being applied to high-strength steels. Not only cold-forming but also hot-working processes are applied for forming complex shapes of the GA/GI processed high-strength steels, whereby various functionalities are required for the GA/GI processed coatings. Herein, we will share the latest research activities on the chemical reactions and their associated formation of multi-phase structures involved in hot-dip Zn/Al processes, and the various functionalities of the coatings. Each research product will be discussed for understanding the structural factors governing various functionalities of the galvanized/aluminized coatings, with a view to the dissemination of research activities at the 13th international conference on Zinc & Zinc Alloy Coated Steel Sheet (GALVATECH 2023, to be held in Seoul in October 2023).