Broad-beam laser cladding of Al-Cu alloy coating on AZ91HP magnesium alloy |
| |
| Authors: | Yali Gao Hongjie Pang Man Yao |
| |
| Institution: | a State Key Laboratory for Materials Modification by Laser, Ion and Electron Beams, Dalian University of Technology, Dalian 116024, PR China
b Department of Materials Science and Technology, Dalian University of Technology, Dalian 116024, PR China |
| |
| Abstract: | The resistance to wear and corrosion of AZ91HP Mg alloy was improved by laser cladding Al-Cu alloy. It was found that the clad layer was characterized by AlCu4 and Mg17Al12 grains embedded in a AlMg matrix. The bonding zone exhibited a white-light planar crystal band with thickness of 10-13 μm. The heat-affected zone formed a eutectic structure due to the Mg diffusion. The microhardness and wear resistance of the coating were improved due to the formation of the hard phases AlCu4 and Mg17Al12. Owing to the formation of dense Al2O3 oxide film, the coating exhibited better corrosion resistance in 3.5 wt.% NaCl solution. |
| |
| Keywords: | Magnesium alloy Al-Cu alloy Laser cladding Microstructure Property |
| 本文献已被 ScienceDirect 等数据库收录！ |
