FTSR铁素体区轧制生产SPHE钢的组织与性能  

Microstructure and Properties of SPHE Steel Produced by Ferrite Rolling Using FTSR

作　　者：夏培培[1] 康永林[1] 王强[2] 梅淑文[2] 

机构地区：[1]北京科技大学材料学院,北京100083 [2]唐山钢铁集团公司技术中心．河北唐山06300

出　　处：《热加工工艺》2009年第24期20-22,26,共4页Hot Working Technology

摘　　要：采用金相观察、透射电镜、化学相分析、XRD织构检测及性能测试等手段分析了FTSR铁素体区轧制工艺生产的SPHE热轧板的微观组织及力学性能,探讨了一种生产SPCE级深冲用钢冷轧基板的新思路。研究结果表明:热轧态组织为粗大而不均匀的铁素体,晶粒沿轧向伸长,组织中有较多细小的析出粒子和高密度位错,有利于冲压性能的{111}织构较弱,但各种类型的织构分布相对较均匀;SPHE热轧板的性能水平:σ0.2为220MPa,σb为290MPa,伸长率δ为37.5%,n值为0.20。The microstructure and properties of SPHE hot rolled sheets produced by ferrite rolling using FTSR were studied by means of metallographic observation, TEM, chemical phase analysis, XRD texture measurement and property testing. The results show that the hot rolling microstructure is coarse and inhomogeneous ferrite, and the grains stretch along the rolling direction, there exists a huge amount of secondary phase precipitates and high density dislocations, the { 111 } texture which is favorable to tensile properties is weak, however, the texture distribution of each type is relatively uniform. The properties of SPHE holt rolled sheets are as follows： σ.2=220 MPa, σb=290 MPa, 6=37.5% and n=0.20.

关 键 词：铁素体区轧制 SPHE 微观组织 织构 性能 

分 类 号：TG146.2[一般工业技术—材料科学与工程] TG335.55[金属学及工艺—金属材料]