摘要
Conventional advanced high strength steels(AHSS) such as dual-phase,TRIP and martensitic sheet products have undergone extensive development and substantially increased implementation in automobile structures over the past few years.Efforts are now underway to extend these improvements and develop steels with even greater strengths and formability.A variety of alloy/process/microstructure/property approaches aimed at next generation AHSS properties are highlighted here.One approach involves the quenching and partitioning process,originally conceived at the Colorado School of Mines,but now being investigated around the global automotive steel development community.Early implementation efforts are underway,and new results demonstrate the capability to obtain ultra-high strength levels with usable ductility.Viewing the field more broadly,it appears that several approaches are converging,and it is likely that additional attention will continue to be placed on expanding the allowable range of austenite stabilizing elements.
Conventional advanced high strength steels(AHSS) such as dual-phase,TRIP and martensitic sheet products have undergone extensive development and substantially increased implementation in automobile structures over the past few years.Efforts are now underway to extend these improvements and develop steels with even greater strengths and formability.A variety of alloy/process/microstructure/property approaches aimed at next generation AHSS properties are highlighted here.One approach involves the quenching and partitioning process,originally conceived at the Colorado School of Mines,but now being investigated around the global automotive steel development community.Early implementation efforts are underway,and new results demonstrate the capability to obtain ultra-high strength levels with usable ductility.Viewing the field more broadly,it appears that several approaches are converging,and it is likely that additional attention will continue to be placed on expanding the allowable range of austenite stabilizing elements.
