组织及织构对铌微合金钢平面各向异性的影响  

EFFECTS OF MICROSTRUCTURE AND TEXTURE ON THE PLANAR ANISOTROPY OF NIOBIUM MICROALLOY STEEL

作　　者：姚勇创 李建英 马德刚 Yao Yongchuang;Li Jianying;Ma Degang(Tangsteel Company of Hesteel Group)

机构地区：[1]河钢集团唐钢公司高强汽车板事业部研发中心,河北唐山063016

出　　处：《河南冶金》2020年第2期25-27,30,共4页Henan Metallurgy

摘　　要：借助单向拉伸、OM以及XRD方法,研究了组织及织构对连退铌微合金钢拉伸力学性能各向异性的影响。实验结果显示,实验钢板的织构主要由{001}<110>、{115}<110>、{112}<110>、{111}<110>和{111}<112>组成,不同拉伸方向上的显微组织无显著差异,但钢板不同拉伸方向上的强度呈现出显著各向异性。分析认为,实验钢中由织构造成的Schmid因子的最大值ηmax在不同拉伸方向上的差异,是导致力学性能各向异性的原因。The effects of microstructure and texture on mechanical properties of continuously annealed niobium microalloy steel were investigated by tensile test,OM and XRD analysis.The results show that,the textures of alloy are mainly consisted of{001}<110>,{115}<110>,{112}<110>,{111}<110>and{111}<112>,there is no significant difference on microstructure of the alloy at different tensile directions,but the yield and tensile strength exhibit obivious anisotropy along those tensile directions.According to analysis,The planar anisotropy is mainly attributed to the difference of maximum Schmid factor(ηmax)along various tensile directions.

关 键 词：铌微合金钢 力学性能 各向异性 织构 

分 类 号：TG142.33[一般工业技术—材料科学与工程]