铌夹层对真空轧制复合Ti不锈钢板的显微组织及性能的影响  

Effect of Nb interlayer on microstructure and property of titanium-stainless steel clad plate bonded by vacuum hot-rolling

作　　者：骆宗安[1] 王光磊[1] 谢广明[1] 王立朋 赵昆[1] 

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,沈阳110819 [2]首钢京唐有限公司,唐山063200

出　　处：《中国有色金属学报》2013年第12期3335-3340,共6页The Chinese Journal of Nonferrous Metals

基　　金：中央高校基本科研业务费资助项目(N110607001)

摘　　要：利用真空轧制复合技术900℃时制备TA2与304L不锈钢的复合钢板,分别研究直接复合及加入Nb夹层后复合界面的组织与性能,分析Nb夹层对复合板组织及性能的影响。结果表明:直接复合的Ti不锈钢复合板界面生成了Fe2Ti、Cr2Ti及NiTi2等多种金属间化合物,严重削弱界面的结合强度,界面的剪切强度仅为128 MPa,性能较差。加入Nb层后,Ti与不锈钢之间的互扩散被完全阻止,且Nb夹层与两侧金属均产生良好的结合;Nb、Ti界面未生成任何金属间化合物,Nb与不锈钢界面有FeNb金属间化合物生成;界面剪切强度获得大幅提升,达到338 MPa,性能优良。The vacuum hot-roll bonding was carried out between TA2 titanium（Ti） and 304L stainless steel（SS） at 900 ℃. The vacuum hot-rolling bonding without interlayer and with niobium（Nb） interlayer was investigated,respectively. The microstructure and property of the interfaces were in-depth studied and the effect of the Nb interlayer was analyzed. The results show that many intermetallic compounds（IMC） are formed on the direct bonded Ti-SS interface,such as Fe2Ti,Cr2Ti and NiTi2. These IMC seriously weaken the shear strength,and lower shear strength of about 128 MPa is achieved. Inserting the Nb interlayer can effectively prevent the interdiffusion between Ti and SS. No IMC is found at Ti-Nb interface while IMC of FeNb is found at Nb-SS interface. The shear strength of about 338 MPa is achieved. The property of the clad plate is substantially enhanced by inserting Nb interlayer.

关 键 词：TA2钛 304L不锈钢 真空轧制复合 界面 金属间化合物 Nb夹层 剪切强度 

分 类 号：TG335.59[金属学及工艺—金属压力加工]