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| Cavitation Erosion Resistance of Fe–Cr–Ni–Co Overlaying and Remelting Layer |
| XU Guifang, QIN Minming, LEI Yucheng, CHEN Xizhang |
| School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013 |
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Cite this article:
XU Guifang QIN Minming LEI Yucheng CHEN Xizhang. Cavitation Erosion Resistance of Fe–Cr–Ni–Co Overlaying and Remelting Layer. Chin J Mater Res, 2011, 25(1): 61-66.
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Abstract A new type of Fe–Cr–Ni–Co overlaying alloy was prepared by argon tungsten–arc welding (TIG) on 304stainless steel, after cooling to room temperature, the weld cladding layer was remelted by TIG. The effect of remelting on the resistance to cavitation erosion property was investigated and the result was compared with that of 304 stainless steel and weld–cladding layer. The alloy layer was analyzed by weight loss analysis, scanning electron microscopy (SEM) and X–ray diffractometer (XRD). Results indicating that the grain size in remelting layer was smaller. The resistance to cavitation erosion property of overlaying and remelting layer was better than that of 304 stainless steel and remelting layer is even better than that of overlaying. Phase transformation from austenite to martensite happened in the cavitation erosion process, which absorbed the energy of cavitation erosion and delayed the process of cavitation erosion. The refined grains by TIG remelting process in the overlaying alloy prevented the development of cracks and enhanced the cavitation erosion resistance property effectively.
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Received: 01 November 2010
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| Fund: Supported by National Key Basic Research and Development Program of China No.2008CB717802, and Natural Science Foundation of Jiangsu Province No.BK2008224. |
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