| ZHOU Chao-ji,REN Zhi-qiang,WANG Xiao-ming,ZHU Sheng,WANG Qi-wei.Study of Experimental and Numerical Simulation of Continuous Forming Coating by Supersonic Particle Deposition[J],44(7):1-5,39 |
| Study of Experimental and Numerical Simulation of Continuous Forming Coating by Supersonic Particle Deposition |
| Received:March 28, 2015 Revised:July 20, 2015 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2015.07.001 |
| KeyWord:supersonic particle deposition simulation of deposition Al-Si coating particle impacting tamping effect |
| Author | Institution |
| ZHOU Chao-ji |
National Key Laboratory for Remanufacturing, Academy of Armored Force Engineering, Beijing , China |
| REN Zhi-qiang |
Brigade of Equipment Trail and Training, Academy of Armored Force Engineering, Beijing , China |
| WANG Xiao-ming |
National Key Laboratory for Remanufacturing, Academy of Armored Force Engineering, Beijing , China |
| ZHU Sheng |
National Key Laboratory for Remanufacturing, Academy of Armored Force Engineering, Beijing , China |
| WANG Qi-wei |
National Key Laboratory for Remanufacturing, Academy of Armored Force Engineering, Beijing , China |
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| Abstract: |
| Objective To study deformation behavior of supersonic multi-particles and analyze laws of the effect of deposition state of different particles and continuous particle compaction on coating formation. Methods The dominant non-linear finite element software LS-DYNA was used to simulate the impact of single particles and matrix, the automatic 2-D single surface contact was used to calculate the impact process so as to study the multi-particle deposition behavior and the influence pattern of continuous particle collision. In addition, the scanning electron microscopy (SEM) was used to analyze morphologies of the Al-Si coatings prepared by supersonic particles deposition (SPD) process on Al alloy to verify the reliability of the model. Results In the impinging process, multi-particles showed interlocking and extrusion effects between particles and this phenomenon was favorable for increase of adhesive strength. Also, the temping effect of continuous particles on pre-deposited particle increased the flattening of the particles and made the compression ratio increased by as far as 3 times, meanwhile, the temping effect avoided the porosity and flaws during the deposition process. The observation of the surface / section morphology of the prepared Al-Si coating proved the reliability of the model. Conclusion Numerical simulation methods can be used to investigate deformation behavior of supersonic particles, and provide a theoretical basis for the application of supersonic particle deposition. |
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