High-Performance Deoxidized Steels: Inclusion Behavior and Metallurgical Strategies

Systematic inclusion control strategies for producing high-performance aluminum-killed steels

Non-metallic inclusions in aluminum-killed steels act as stress concentrators and crack initiation sites, degrading toughness, ductility, and fatigue resistance. High-Performance Deoxidized Steels: Inclusion Behavior and Metallurgical Strategies presents a systematic framework for controlling these inclusions under non-stirring conditions, detailing mechanisms of regulation, nucleation, and coarsening that directly affect mechanical properties, surface quality, and processing performance.

The book examines how aluminum, magnesium, and rare earth elements influence inclusion morphology, composition, and distribution. It integrates thermodynamic calculations with advanced characterization techniques to develop reproducible clean steel production processes. Coverage extends to oxide metallurgy and the role of fine inclusions in promoting intragranular ferrite nucleation for next-generation high-strength, high-toughness steels.

The book also covers:

• Multi-element deoxidation approaches addressing inclusion modification through combined aluminum, magnesium, and rare earth treatment pathways
• Practical guidance on converting academic inclusion control theory into reproducible industrial steelmaking processes for steel purification
• Detailed analysis of inclusion effects on surface quality, weldability, and fatigue life in demanding structural applications
• Kinetic modeling frameworks for predicting inclusion coarsening and removal behavior during steel refining and continuous casting
• Strategies for leveraging oxide particles to improve microstructural refinement and achieve targeted grain boundary characteristics in finished steels

This reference serves materials scientists, mechanical engineers, corrosion specialists, and industrial chemists working in automotive, aerospace, and appliance manufacturing. By connecting inclusion control theory with reproducible metallurgical strategies, it provides the technical foundation needed to produce steels meeting stringent performance and reliability requirements.

Linzhu Wang, PhD, is a Professor at the College of Materials and Metallurgy, Guizhou University, China. She has presided over 4 national-level projects and more than 10 provincial and industry-university-research cooperation projects, publishing more than 70 SCI/EI indexed papers in authoritative metallurgical journals.

Chaoyi Chen, PhD, is a Professor at the College of Materials and Metallurgy, Guizhou University, China. He is also an associate editor-in-chief of China Metallurgy. His research mainly focuses on new technologies for short-process metallurgy, comprehensive utilization of metallurgical resources, and corrosion and protection, among other fields.

Ruizhi Gao is a PhD candidate in Materials Science and Engineering at Guizhou University, China. His research focuses on the control and modification of non-metallic inclusions, as well as the corrosion behavior and local corrosion mechanisms of materials.

Jun Wang is a PhD candidate in Materials Science and Engineering at Guizhou University, China. His research focuses on rare earth modified inclusions in steel and the regulation of strengthening phases in oxide dispersion strengthened steels for nuclear fusion reactors.