Special Issue for KSTP30 Years Anniversary: Recent Steel Research in Mechanics of Plastic Deformation and Materials Processing

Plastic deformation and related materials processing is the basic technology that produces materials into parts and finished products.Plastic processing is applied to the entire manufacturing process of almost all industries, including automobiles, shipbuilding, aerospace, IT, etc., and is an essential element that determines the quality competitiveness of the final products.Therefore, it is a representative process technology of the root industry that creates new values.The Korean Society for Technology of Plasticity (KSTP) was founded in 1991.Since its establishment by mechanical and materials researchers in the related fields, KSTP has contributed greatly to the development of Korea's manufacturing industry, especially the automotive, electronics, machinery, and material industries, through academic research and manpower training.The KSTP is composed of the president, the chief vice president, five vice presidents, and forty-three directors.Transactions of Materials Processing is published six times each year.The KSTP has seven Divisions (Forging, Extrusion, Sheet Forming, Die Manufacturing, Light Weight Materials, Plastics, Rolling) and sponsored NUMISHEET2002, ICTP2008, NUMIFORM2011, NUMISHEET2012, AEPA2018, IDDRG2020 successfully.The KSTP currently has over 2000 members.The KSTP has four visions:-Develop an academic organization to connect industry, academia, and research institutions for cooperation, -Presenting comprehensive and creative solutions to materials processing and leading the creation of new research fields through cooperation in the fields of machinery, materials, and their applications, -Developed into a global top 4 materials processing academic organization in 45 th anniversary, -Leading the preservation of the global environment through the continuous development of the study and industry of plastic processing in its 60 th anniversary.This special issue includes 25 articles on topical steel research, especially from the International Symposium on KSTP30 Years Anniversary (IS-KSTP30).Although the experimental and numerical methods are generic and can be applied to any material, the constitutive models, i.e., the mathematical descriptions of material behavior, are material specific.The articles include various aspects of steel research, including materials characterization & modeling, anisotropy, formability & fracture, simulation & optimization, innovative process design, phase transformation, machine learning, microstructure, etc.Therefore, understanding both macroscopic and microscopic aspects of the plastic behavior of sheet alloys is essential.