低碳冲压钢板静态再结晶行为的研究  

Research on the static recrystallization behavior in deep drawing low carbon steel

作　　者：李萧[1] 杨平[2] 林瑞民[3] 刘西峰[3] 

机构地区：[1]北京科技大学冶金工程研究院,北京100083 [2]北京科技大学材料科学与工程学院,北京100083 [3]唐山建龙实业有限公司,河北遵化064200

出　　处：《电子显微学报》2011年第4期372-377,共6页Journal of Chinese Electron Microscopy Society

摘　　要：利用背散射电子衍射(EBSD)技术和X射线衍射(XRD)对SPCD冷轧钢板缓慢升温退火工艺下的再结晶取向特征、织构的形成规律及与形变织构的关系进行研究,并与快速加热退火工艺下的IF钢再结晶取向特点进行对比。结果表明:宏观织构显示冷轧态下{111}〈112〉形变织构稳定存在,随后的再结晶过程中γ线上存在{111}〈112〉与{111}〈110〉织构的竞争,其中再结晶初期{111}〈112〉织构占主导,后期{111}〈110〉吞食{112}〈110〉和{001}〈110〉织构进而取代{111}〈112〉作为γ线织构的主导取向;不同取向新晶粒具有不同的再结晶形核地点:{111}〈110〉新晶粒主要在{112}〈110〉和{111}〈112〉形变晶粒的晶界处形核;{111}〈112〉新晶粒主要在相同取向的形变晶粒内形核;而{110}〈001〉新晶粒主要在{111}〈112〉形变晶粒的形变带内形核。Taking SPCD cold rolled steel sheet as the example,the nuclei orientational characteristic,the formation mechanism of recrystallization texture and the relationship between recrystallization and deformation texture were investigated during annealing with slow heating technique.In the meanwhile,the comparison with reacrystallization orientational characteristic of IF steel during annealing with rapid heating technique was further discussed.The results showed that new grains with different orientations had different recrystallization nucleation sites,{111}〈110〉 orientational new grains nucleated at grain boundaries of deformed grains with {111}〈112〉 and {112}〈110〉 orientation,while {111}〈112〉 nucleated at deformation bands of deformed matrix with the same orientation,and {110}〈001〉 nucleated at deformation band of deformed grains with {111}〈112〉.Texture evolution during the recrystallization revealed that,{111}〈110〉 formed preferentially in the early stage,then further replaced {111}〈112〉,consuming {112}〈110〉 and {001}〈110〉,and finally became the dominate {111} texture.

关 键 词：SPCD 再结晶 取向 EBSD 

分 类 号：TG142.31[一般工业技术—材料科学与工程] TG115.215.3[金属学及工艺—金属材料]