Modeling and Simulation of Q&P Steels

Abstract:

Two important objectives of the automotive industry are the decrease of the body-in-white weight and the improvement of the passenger safety. High strength steels (HSS) are widely used to achieve these objectives. Quenching and partitioning (Q&P) has recently been proposed to achieve high strength steel grades for the third generation of advanced high strength steels (AHSS), which contain a considerable amount of retained austenite. Due to their microstructure these new steel grades combine a high tensile strength with good elongation values, as long as cementite precipitation is avoided. A model describing the involved phase transformations is presented. Special focus is put on the cementite precipitation and how it is influenced by silicon and aluminum additions.

• Periodical: Materials Science Forum (Volume 879)
• Pages: 1454-1458
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.879.1454
• Online since: November 2016
• Authors: Georg Paul*, Richard G. Thiessen
• Keywords: Microstructure, Modeling, Partitioning, Quench, Simulation, Steel, Thermodynamic

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