Study of a Cold Rolled Dual Phase Steel with a High Aluminum Amount

摘要：

In this paper a 600 MPa grade cold rolled dual phase steel with 1.0% aluminum substituting for silicon had been investigated on laboratory scale annealing line. The study of the microstructure shows that the microstructures of the steel mainly consist of ferrite,along with martensite with the content of 20% which distributes homogenously on the ferrite grain boundary. TEM analysis demonstrates that it exists lots of high dislocation density within the ferrite grains surrounded by the martensite. The characteristics of microstructure contribute to this dual phase steel with excellent mechanical properties; Rp0.2 =350—390 MPa,Rm=620~650 MPa,RP0.2／Rm=0．58～ 0．62,A80mm=24％-27％,,n=0．17-0．20,BH2=45～60MPa·

关键词： automotive steel dual phase steel galvanizing steel sheet hish strength steel

作者: Wang Hui Liu Wenyan Lin Chengjiang Zhong Dingzhong

作者单位: Research and Development Centre,Wuhan Iron and Steel Corp.,Wuhan 430080,China

会议类型: 国际会议

会议名称: 2009 International Symposium on Automobile Steel(2009年汽车用钢生产及应用技术国际研讨会)

会议地点: 大连

会议语种:英文

页码: 274-277

在线出版日期: 2009-09-06（万方平台首次上网日期，不代表论文的发表时间）