Feng Ying-Ying, Yu Huan, Luo Zong-An, Xie Guang-Ming, Misra R D K
The State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China.
Department of Metallurgical, Materials and Biomedical Engineering, University of Texas, El Paso, TX 79968, USA.
Materials (Basel). 2018 Aug 21;11(9):1489. doi: 10.3390/ma11091489.
In this study, the impact of different surface treatment and degree of vacuum on the interface and mechanical properties of 304/Q345 stainless steel clad plate was investigated. The study indicated that more continuous or aggregated Al₂O₃ and Si-Mn composite oxides were formed at the interface after brush grinding. However, less inclusions such as Al₂O₃, MnS and Ca-Mg-Al-Si composite oxides were formed at the interface after pickling treatment. For the vacuum degrees of 10 Pa, 1 Pa and 105 Pa, the oxidation reaction became more intense with the decrease in vacuum degree. The interface inclusions were gradually changed from Al₂O₃ and Si-Mn complex oxides to oxide scale and MnCr₂O₄ spinel oxide. The interfacial bonding strength of stainless steel clad plate was improved with the increase in degree of vacuum. The bonding strength was 55 MPa at vacuum of 10⁵ Pa, but it was 484 MPa at vacuum of 10 Pa, which is far greater than that of the national standard, and an excellent performance was obtained.
本研究考察了不同表面处理及真空度对304/Q345不锈钢复合板界面及力学性能的影响。研究表明，刷磨后界面处形成了更连续或团聚的Al₂O₃和Si-Mn复合氧化物。然而，酸洗处理后界面处形成的Al₂O₃、MnS和Ca-Mg-Al-Si复合氧化物等夹杂物较少。对于10 Pa、1 Pa和10⁵ Pa的真空度，随着真空度降低，氧化反应变得更加剧烈。界面夹杂物逐渐从Al₂O₃和Si-Mn复合氧化物转变为氧化皮和MnCr₂O₄尖晶石氧化物。不锈钢复合板的界面结合强度随真空度的增加而提高。在10⁵ Pa真空度下结合强度为55 MPa，但在10 Pa真空度下为484 MPa，远高于国家标准，性能优异。
