| CAI Hang-wei,GAOY uan,MA Zhi-kang,WANG Cheng-lei,YUAN Lin,ZHANG Wei,LI Bing.Research on W-Mo-Y Plasma Surface Alloying Process and Microstructure of Alloying Layer[J],(2):16-19 |
| Research on W-Mo-Y Plasma Surface Alloying Process and Microstructure of Alloying Layer |
| Received:January 26, 2011 Revised:April 20, 2012 |
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| DOI： |
| KeyWord:glow plasma W-Mo-Y surface alloying thickness of alloying layer |
| Author | Institution |
| CAI Hang-wei |
School of Materials Science and Technology, Guilin University of Electronic Technology, Guilin , China |
| GAOY uan |
School of Materials Science and Technology, Guilin University of Electronic Technology, Guilin , China |
| MA Zhi-kang |
School of Materials Science and Technology, Guilin University of Electronic Technology, Guilin , China |
| WANG Cheng-lei |
School of Materials Science and Technology, Guilin University of Electronic Technology, Guilin , China |
| YUAN Lin |
School of Materials Science and Technology, Guilin University of Electronic Technology, Guilin , China |
| ZHANG Wei |
School of Materials Science and Technology, Guilin University of Electronic Technology, Guilin , China |
| LI Bing |
School of Materials Science and Technology, Guilin University of Electronic Technology, Guilin , China |
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| Abstract: |
| Low carbon steel Q235 was firstly conducted by W-Mo-Y double glow plasma surface alloying process.Then the optimal process parameters were confirmed by means of researching the effects of electrode distance, working pressure, holding time, and holding temperature on the thickness of alloying layer. And Optical morphologies, alloying elements distribution and phase composition were analyzed. The results show as follows: the optimal process parameters of W-Mo-Y surface alloying process are as follows: interelectrode distance 25 mm, working pressure 30 Pa, holding time 3 h, holding temperature 1000 ℃. The thickness of alloying layer can reach 37 μm; The microstructure of alloying layer is columnar crystal, and there is anobvious boundary between alloying layer and the matrix. And W and Mo in alloying layer are in gradient distribution. Y is not evenly distributed, and segregate at grain boundaries. |
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