| YUAN Ying,LIN Ying-hua,WANG Liang,ZHANG Jie,YAO Jian-hua,LIU Xin-xin,Volodymyr S. Kovalenko.Fabrication of TiBw/Ti Network Microstructure Coating by Electromagnetic Composite Laser Cladding[J],48(5):102-107 |
| Fabrication of TiBw/Ti Network Microstructure Coating by Electromagnetic Composite Laser Cladding |
| Received:October 23, 2018 Revised:May 20, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.16490/j.cnki.issn.1001-3660.2019.05.016 |
| KeyWord:laser cladding Lorentz force network microstructure TiB microstructure |
| Author | Institution |
| YUAN Ying |
1.Institute of Laser Advanced Manufacturing, Zhejiang University of Technology, Hangzhou , China |
| LIN Ying-hua |
1.Institute of Laser Advanced Manufacturing, Zhejiang University of Technology, Hangzhou , China |
| WANG Liang |
1.Institute of Laser Advanced Manufacturing, Zhejiang University of Technology, Hangzhou , China |
| ZHANG Jie |
1.Institute of Laser Advanced Manufacturing, Zhejiang University of Technology, Hangzhou , China |
| YAO Jian-hua |
1.Institute of Laser Advanced Manufacturing, Zhejiang University of Technology, Hangzhou , China |
| LIU Xin-xin |
2.Harbin Turbine Company Limited, Harbin , China |
| Volodymyr S. Kovalenko |
1.Institute of Laser Advanced Manufacturing, Zhejiang University of Technology, Hangzhou , China;3.Laser Technology Research Institute, National Technical University of Ukraine “Kiev Polytechnic Institute”, Kiev 03056, Ukraine |
|
| Hits: |
| Download times: |
| Abstract: |
| The work aims to prepare TiBw/Ti coating by electric-magnetic compound field (EMCF) with laser cladding and study the influence of electric-magnetic field on the microstructure of coating. The mixed powders (Mole ratio TiB2∶Ti=1∶1) were used as the cladding materials, and TC4 was used as the substrate material. The laser cladding experiment was carried out under external electromagnetic field. The effect of Lorentz force on the microstructure of the cladding layer was observed by scanning electron microscopy (SEM) and the phases and hardness of the coatings without and with EMCF were tested by the X-ray diffraction (XRD) and Vickers hardness tester, respectively. The microstructure of coatings without EMCF appeared as thick needles, thick rods and particles form, while the coating with EMCF showed the network characteristics. Moreover, when the Lorentz force was downward direction, the network microstructures had a larger spatial spacing. The microstructure of the laser cladded coating with magnetic compound field (MCF) appeared as thick needles and thick rods. The hardness of the coatings without and with EMCF was greatly improved compared with that of the matrix, but the hardness of the coatings without EMCF varied greatly. With the increase of the distance from the cladding layer surface, the variation of hardness was relatively gentle after the electro-magnetic composite field was applied. The composite coating with TiBw/Ti reticular structure can be obtained under Lorentz force, the electromagnetic composite field makes the reinforcement phases of TiBw/Ti reticulate structure uniformly distributed, and improves the microhardness of the coating at the same time. |
| Close |
|
|
|