| Refinement of primary Si in Cu–50Si alloys with novel Al–Zr–P master alloy |
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| 作者姓名： | Min Zuo Zhong-Shi Zhang Xin-Ying Teng Hao-Ran Geng |
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| 作者单位： | Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, School of Materials Science and Engineering, University of Jinan;School of Physics and Technology, University of Jinan |
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| 基金项目： | This work was financially supported by the National Natural Science Foundation of China，the Shandong Doctoral Foundation，the Doctoral Foundation，the Research Foundation of the University of Jinan |
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| 摘 要： | ![]()
In this article, a novel Al-6Zr-2P master alloy with ZrP particles was successfully synthesized, and the refining performance of this novel master alloy for the primary Si in Cu-50Si alloys was also investigated. By means of the fracture plane observation, it is found that the ZrP phase would precipitate first in the solidification process, and then, the ZrAl 3 phase grows around them. Furthermore, it is observed that the refining effect can be remarkably improved by changing the addition sequence of the raw materials. After the melting of commercial Cu, the 2.0 wt% Al-6Zr-2P master alloy and crystalline Si were added in sequence, and the mean size of the primary Si in Cu-50Si alloy can be significantly refined from 255.7 to 75.3 lm. Meanwhile, the refining mechanism was discussed in detail.
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| 关 键 词： | Al–Zr–P master alloy Cu–Si alloy ZrP Microstructure Phase transformation |
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