高性能钢的M³组织调控理论与技术

来源期刊：钢铁2010年第7期

论文作者：董瀚 王毛球 翁宇庆

文章页码：1 - 7

关键词：高性能钢； 组织调控； 理论与技术

Key words：high performance steel； microstructure control； theory and technology

摘    要：介绍了国家重点基础研究发展计划(973计划)"高性能钢的组织调控理论与技术基础研究"项目的研究目标和内容。该项目以提高钢的服役安全性为目标,研究提高钢的性能之组织调控理论和技术。研究内容包括了温度和应力作用下的亚稳奥氏体相变机制、相变过程中碳扩散、相变组织多尺度特征、相变组织在温度-应力-腐蚀作用下的稳定性、以及获得高洁净度和高均匀度钢坯的化学冶金学和凝固技术基础。建立以"多相(Multi-phase)、亚稳(Meta-stable)、多尺度(Multi-scale)"(简称M³)为特征的组织调控理论,形成以第3代低合金钢、第3代汽车用钢和第3代马氏体耐热钢为代表的高性能原型钢技术,为大幅度提高建筑设施、汽车、能源装备的服役安全性奠定钢铁材料技术基础。

Abstract: A new research project granted by national basic research program of China(973 program) was introduced,which is the third phase for New Generation Steel research.The project aims to systematically investigate the microstructure evolution phenomena in steels and to form the new microstructure control technologies for high performances,by which the safety of steels in service could be eventually improved remarkably.The issues such as steel metallurgy for ultra clean and ultra homogeneous microstructures,phase transformation mechanisms of meta-stable austenite subject to temperature and load changes,carbon diffusion during transformation,multi-scale characterization of transformed microstructures,and microstructure stability in the circumstances of temperature,load and corrosion in service.It is expected to develop the theory of microstructure control featured by Multi-phase,Meta-stable and Multi-scale(M³).It is also to form the prototype technologies for manufacturing high performance steels such as the third generation high strength low alloy steel,the third generation automotive sheet steel,and the third generation heat resistant martensitic steels.It will provide the fundamentals for improving safety of steels in service for infrastructures,automobiles and fossil power station.