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| Morphology Evolution of Different Primary Phase in High-chromium Iron at Different Groove Radius of Slope Plate Cooling Body |
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Received:April 26, 2012
Revised:April 27, 2012
Accepted:April 28, 2012
Published Online:June 26, 2012
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| DOI：10.3969/j.issn.1007-7545.2012.07.017 |
| KeyWord:slope plate cooling method; groove radius; high-chromium iron; primary austenite; primary M7C3 carbide |
| Author | Institution |
| TIAN Qin |
贵州大学材料与冶金学院 贵州 贵阳 |
| LEI Yuanyuan |
贵州大学材料与冶金学院 贵州 贵阳 |
| ZHU Tao |
贵州大学材料与冶金学院 贵州 贵阳 |
| WANG Li |
贵州大学材料与冶金学院 贵州 贵阳 |
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| Abstract: |
| Semi-solid slurries of high-chromium iron were prepared with slope plate overflowing cooling method, and the morphology evolution of different primary phase in those slurries at different groove radius of slope plate cooling body was studied. The results show that the slope plate cooling method is an effective method to refine the microstructure of semi-solid slurry of high-chromium iron. The refinement of primary austenite by dendritic growth in a relatively smaller groove radius of cooling body is mainly in the form of fusing, and the structure of that in relatively larger groove radius of cooling body is mainly kinking. The refining of primary M7C3 carbides by rhabditiform growth is mainly in forms of cracking, breaking and splitting. For primary M7C3 carbides, it is relatively easy to form thicker swathing layer long rod primary carbides in smaller groove radius of cooling body than in bigger groove radius, and these carbides are difficult to be crushed and broken. |
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