Microstructure and Performance Control Technology of the 3rd Generation Auto Sheet Steels
The fundamental research and industry trials of the 3rd generation automobile steels was introduced. Motivitated by the theory of microstructure control characterized by Multi-phase, Meta-stable and Multi-scale(called M3 simply), summary and review of the home and abroad automobile steels were carried out, which led to the idea microstructure controlling characterized by ultrafine grained matrix and metastable austenite phase and the approaches of medium manganese alloying and austenite reverted transformation annealing for the research and development of the 3rd generation automobile steel. The fundamental research and industry trials were introduced in details, which included the mechanism of austenite reverted transformation, microstructure evolution of the ultrafine grained ferrite and austenite dualphase structure, mechanical behaviors and ductility-enhancing mechanism, industry trial process, service performance and application technologies and prospects of the 3rd generation steels. It was concluded that this study forms the prototype technologies of the third generation automotive sheet steel, which provides the theorical and technological basement for the weightlightening and safety-improvement of the automotive steels in materials aspect.
third generation automobile steelM3 typed microstructure controlART-annealingultrafine structurehigh product of strength to ductility
NETL
NSTL
万方数据
维普
