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
蒋健博 1厉文墨 2刘芳芳 1江坤2
作者信息
- 1. 鞍钢集团 北京研究院,北京 102209;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
- 2. 鞍钢集团 北京研究院,北京 102209
- 折叠
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 10 μm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 40 μm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 179 MPa.综上,0.01 Pa是轧制法制备钛钢复合板的合理真空度.
Abstract
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 10 μm 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 40 μm 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Key words
titanium-steel clad plate/vacuum degree/interface structure/shear strength引用本文复制引用
出版年
2024
NETL
NSTL
万方数据