Application and Development Trend of Advanced High Strength Steel for Auto

Main progress in the advanced high strength steel and its applications in the automobile industry are reviewed.The theorem,composition,characteristic of several advanced high strength steel are given in details,which includes BH steel,DP steel and TRIP steel.Furthermore,the present application and developing situation of the above-mentioned high strength steel were introduced too.The reduction of stretch flange ability and bend formability and the increase of rebound and bend dehiscence in forming processes are introduced. It is pointed out that the development of high strength steel should combine with the improvements of forming techniques.Furthermore,the development trend of high strength steel are introduced,it is that the safe and formability should be thought about in addition to increasing strength and lighting for automobile.Meanwhile, the new strengthening method for increasing strength and ductility should be developed.