冷拔高碳钢丝及其再结晶织构  

Texture of cold drawn and recrystallized high carbon steel wire

作　　者：姚小燕[1,2] 黄海波[1,2] 李凡[1,2] 

机构地区：[1]东南大学材料科学与工程学院,南京211189 [2]东南大学江苏省先进金属材料高技术研究重点实验室,南京211189

出　　处：《东南大学学报（自然科学版）》2010年第6期1323-1326,共4页Journal of Southeast University：Natural Science Edition

基　　金：国家科技支撑计划资助项目(2007BAE15B05);江苏省产学研前瞻性联合资助项目(BY2009154)

摘　　要：为了研究高碳钢盘条拉拔及后续退火过程中织构的演变规律,采用扫描电子显微镜(SEM)和电子背散射衍射(EBSD)系统分别对SWRH82B热轧盘条以,及不同应变量的钢丝拉拔态、再结晶态的显微组织和织构进行了研究.研究发现,原始盘条中晶粒呈等轴状,片层无明显的择优取向,且盘条中晶粒取向比较分散,存在着很微弱的织构;冷拔态钢丝中的晶粒呈纤维状,片层基本沿拉拔方向排列,其主要织构为明显的〈110〉丝织构、{111}〈110〉和{001}〈110〉织构,且随着应变量增大,〈110〉丝织构的强度明显提高;钢丝经600℃退火6h完全再结晶后,晶粒呈等轴状,渗碳体球化,钢丝的再结晶织构类型仍为明显的〈110〉丝织构,与退火前相比,织构的强度有所变化.In order to ascertain the evolution regularity,SEM（scanning electron microscopy） and EBSD（electron backscatter diffraction） were used to research the microstructure and texture of SWRH82B rod and as-drawn and annealed steel wires.Results indicate that in rod the crystal grains are equiaxed and the laminae have no preferred orientation,the grain orientation is not concentrated and there is only slight texture in rod.In as-drawn steel wires,the grains are fibrous and the laminae arrange along the drawing direction,〈110〉 fiber texture is the main texture,while{111}〈110〉 and {001}〈110〉 textures are also existing.As the strain increases,this texture intensity increases significantly.After annealed for 6h at 600℃,the material recrystallizes,the grains are equiaxed and the cementite is spheroidized.The recrystallized texture type keeps unchanged,but its intensity changes compared with that of as-drawn steel wires.

关 键 词：EBSD 再结晶 织构 

分 类 号：TG142.1[一般工业技术—材料科学与工程]