不同真空度下轧制钛钢复合板的界面氧化行为  

Interfacial Oxidation Behavior of Rolled Titanium Steel Clad Plates in Different Vacuum Degrees

作　　者：蒋健博 厉文墨 刘芳芳 江坤 JIANG Jianbo;LI Wenmo;LIU Fangfang;JIANG Kun(Ansteel Beijing Research Institute,Beijing 102209,China;State Key Laboratory of Metal Material for Marine Equipment and Application,Anshan 114009,China)

机构地区：[1]鞍钢集团北京研究院,北京102209 [2]海洋装备用金属材料及其应用国家重点实验室,辽宁鞍山114009

出　　处：《热加工工艺》2024年第13期121-125,共5页Hot Working Technology

摘　　要：采用真空热轧复合技术制备了TA2/Q345R钛钢复合板,通过扫描电子显微镜(SEM)、维氏硬度计、万能拉伸试验机等分析了不同真空度下轧制钛钢复合板的界面组织和力学性能。结果表明:当复合坯真空度为1 Pa时,钛钢复合板钛复层氧化明显,TA2表面分别产生了10μm的富氧层与硬化层,硬化层硬度约为325 HV;当复合坯真空度为0.1 Pa时,TA2表面部分氧化导致钛钢界面产生约40μm厚的间隙,局部位置还产生了冶金结合;当复合坯真空度达到0.01 Pa时,钛钢复合界面平整连续无缺陷,平均剪切强度约179MPa。综上,0.01 Pa是轧制法制备钛钢复合板的合理真空度。TA2/Q345R titanium-steel clad plate was prepared by vacuum hot-rolling cladding technology.The interface structure and mechanical properties of titanium-steel clad plates under different vacuum degrees were analyzed by scanning electron microscope(SEM),Vickers hardness tester,and universal tensile testing machine.The results show that when the vacuum degree of the clad slab is 1 Pa,the titanium cladding layer of the titanium-steel clad plate is obviously oxidized,and a 10μm oxygen-rich layer and a hardened layer are formed on the surface of TA2,and the hardness of the hardened layer is about 325 HV.When the vacuum degree of the clad slab is 0.1 Pa,the surface of TA2 is partially oxidized,resulting in a gap of about 40μm thick at the titanium-steel interface,and a metallurgical bond is also generated at the local position.When the vacuum degree of the clad slab reaches 0.01 Pa,the interface of the titanium steel clad is smooth and continuous without visible defects,and the average shear strength is about 179 MPa.Therefore,0.01 Pa is a reasonable vacuum degree for preparing titanium-steel clad plate by rolling method.

关 键 词：钛钢复合板 真空度 界面组织 剪切强度 

分 类 号：TG337.5[金属学及工艺—金属压力加工] TG337.6