摘要
In order to meet the progressive requirement for the performance improvement of steel,the author proposed a novel microstructure featured with multi-phase,meta-stable and multi-scale(so-called as M 3).And then,the new technologies could be developed to process three prototype steels with high performance:the third generation high strength low alloy(HSLA) steels with improved toughness and/or ductility(AKV(40℃)≥200 J and/or A≥20% when Rp0.2 in 800-1000 MPa),the third generation advanced high strength steels(AHSS)(Rm×A≥30 GPa% when Rm from 1000 MPa to 1500 MPa) for automobiles with improved ductility and low cost,and heat resistant martensitic steels with improved creep strength(10000650≥90 MPa).It can be expected that the new technology developed will remarkably improve the safety and reliability of steel products in service for infrastructures,automobiles and fossil power station in the future.
In order to meet the progressive requirement for the performance improvement of steel,the author proposed a novel microstructure featured with multi-phase,meta-stable and multi-scale（so-called as M 3）.And then,the new technologies could be developed to process three prototype steels with high performance：the third generation high strength low alloy（HSLA） steels with improved toughness and/or ductility（AKV（40℃）≥200 J and/or A≥20% when Rp0.2 in 800-1000 MPa）,the third generation advanced high strength steels（AHSS）（Rm×A≥30 GPa% when Rm from 1000 MPa to 1500 MPa） for automobiles with improved ductility and low cost,and heat resistant martensitic steels with improved creep strength（10000650≥90 MPa）.It can be expected that the new technology developed will remarkably improve the safety and reliability of steel products in service for infrastructures,automobiles and fossil power station in the future.
基金
Ministry of Science and Technology is acknowledged for the financial funding of the"973 program" of Grant No. 2010CB630800
