The 13th Five-Year Plan Project "Technical Fundamental Research on Prototype Steel for High-Performance and Ultra-High-Strength Automobiles" passed acceptance

On September 26, 2021, the 13th Five-Year Plan Project, "Technical Fundamental Research on Prototype Steel for High-Performance and Ultra-High-Strength Automobiles" participated by University of Science and Technology Beijing passed acceptance in Shanghai. The subject is subordinate to the High-Performance and Ultra-High-Strength automotive steel project led by Baoshan Iron and Steel Co., Ltd. The undertaking units of the project are Central Iron and Steel Research Institute, Shanghai Jiao Tong University, University of Science and Technology Beijing, The University of Hong Kong Shenzhen Institute of Research and Innovation, and Shougang Group.

The subject of "Technical Fundamental Research on Prototype Steel for High-Performance and Ultra-High-Strength Automobiles" mainly focuses on scientific problems such as the alloying principle of the third generation automotive steel with High-Strength plastic product, M3 (multiphase, metastable, and multi-scale) microstructure regulation, the phenomenon and principle of phase transformation and fracture, etc. The modern transportation steel research team of the Collaborative Innovation Center of Steel Technology undertook the development of M3 microstructure and performance evolution law and performance prediction model during deformation. On the premise of clarifying the micro mechanism of metastable austenite transformation plasticization and strain hardening in M3 microstructure steel, the team analyzed the influence of microstructure on the macro stress-strain relationship of M3 microstructure steel under different deformation conditions. Finally, the corresponding relationship model between microstructure and macro mechanical properties of M3 steel was established.

Project performance evaluation meeting

EBSD analysis of deformation induced martensitic transformation in M3 structure steel