Technological Aspects of Advanced High‐Strength Steels: From Casting to Joining

The performance of advanced high‐strength steels (AHSSs) is governed by their chemical composition and processing history, which interact to control phase transformations, microstructural evolution, defect formation, and mechanical properties. The present work reviews the main technological aspects of AHSS production and processing, including castability, hot workability, hot‐dip galvanizability, cold formability, weldability, and machinability. It highlights that castability and hot workability are strongly influenced by solidification behavior, microsegregation, phase transformations, inclusions, and precipitation, and that careful control of composition and processing conditions is critical for mitigating cracking and other defects. Moreover, hot‐dip galvanizability depends on steel and Zn‐bath compositions, surface oxidation, annealing conditions, and reactive wetting, which collectively affect the coating quality. Cold formability, particularly of sheet products, is associated with microstructure, deformation behavior, strain localization, damage evolution, and forming conditions such as strain rate and lubrication. Additionally, weldability is strongly influenced by chemical composition, welding thermal cycles, and heat input, which affect microstructural evolution and the resulting properties of welded joints. Finally, machining, which is commonly applied to forgings, is affected by alloy composition, strength, work‐hardening behavior, and thermal conductivity, and appropriate cooling strategies can improve machining performance. Challenges and opportunities for improving the performance of AHSSs are also highlighted.