Dear Colleagues,

A variety of high-strength steels have been under development for application in automobiles, industrial machinery, power plant, construction machinery, robots, ships, aircraft, buildings, etc. Recently, high-strength steels have received a great deal of attention from both academic and industrial sectors. To properly apply these high-strength steels to machines and parts, there is a requirement for a deep understanding of the microstructure and mechanical properties of the steels subjected to various manufacturing processes, such as casting process, rolling process, additive manufacturing process, heat-treatment, thermo-mechanical process, hot/cold stamping and forging, welding process, machining process, surface modification process, etc. In addition, understanding the microstructure–mechanical property relationships is essential for developing novel high-strength steels since the developed microstructures, obtained by a variety of processes, greatly affect the mechanical properties of the high-strength steels.

This Special Issue of Metals has as its focus the microstructure–mechanical property relationships in (1) traditional high-strength steels such as ferritic/pearlitic steels, precipitation-hardening steels, bainitic/martensitic steels, maraging steels, stainless steels, bearing steels, spring steels, rail steels, etc. Additionally, we intend to highlight (2) advanced high-strength steels such as dual-phase steels, complex phase steels, low-alloy TRIP-aided steels with a different matrix structure, medium-/high- Mn steels, medium-/high- entropy steels, low-density steels, etc. In addition to inviting submissions on these topics, we also welcome research articles on mechanical properties such as tensile properties, formability, toughness, fatigue properties, delayed fracture strength, wear properties, and so on, tested in several conditions such as elevated and cryogenic temperatures, corrosive atmosphere, etc.

Prof. Dr. Koh-ichi Sugimoto
Dr. Tomohiko Hojo
Guest Editors

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• physical metallurgy
• microstructure
• mechanical property
• high-strength steel
• heat treatment
• manufacturing process