| Preparation of nanocrystal modificator and its modification mechanism |
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| 作者姓名： | 董天顺 崔春翔 刘双进 杨薇 刘福才 |
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| 作者单位： | School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, China |
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| 摘 要： | In order to increase the modifying effect, the Cu-P master alloy was rapidly solidified with melt-spin method, and the nano-sized ribbon was gained at 10^5-10^6 ℃/s. Subsequently, ZL109 alloy was modified by nanocrystal and massive Cu-P master alloy, respectively, with molten metal casting method. The results show that the microscopic structure of ZL109 alloy modified by nanocrystal Cu-P master alloy is better than that modified by massive Cu-P master alloy, the original crystal silicon and eutectic silicon are refined more effectively and the mechanical properties are increased evidently： the tensile-strength is increased by 25%, the elongation is increased by 32.26% and the hardness is increased by 17.2%. Therefore, the melt-spin treatment is a feasible method to improve the modifying effect of Cu-P master alloy.
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| 关 键 词： | 铜磷中间合金 ZL109合金 熔化旋转 快速凝固 纳米晶 |
| 收稿时间： | 8 December 2006 |
| 修稿时间： | 2006-12-082007-04-20 |
Preparation of nanocrystal modificator and its modification mechanism |
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| DONG Tian-shun,CUI Chun-xiang,LIU Shuang-Jin,YANG Wei,LIU Fu-cai.Preparation of nanocrystal modificator and its modification mechanism[J].Transactions of Nonferrous Metals Society of China,2007,17(4):823-827. |
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| Authors: | DONG Tian-shun CUI Chun-xiang LIU Shuang-Jin YANG Wei LIU Fu-cai |
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| Affiliation: | School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, China |
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| Abstract: | In order to increase the modifying effect, the Cu-P master alloy was rapidly solidified with melt-spin method, and the nano-sized ribbon was gained at 105–106 °C/s. Subsequently, ZL109 alloy was modified by nanocrystal and massive Cu-P master alloy, respectively, with molten metal casting method. The results show that the microscopic structure of ZL109 alloy modified by nanocrystal Cu-P master alloy is better than that modified by massive Cu-P master alloy, the original crystal silicon and eutectic silicon are refined more effectively and the mechanical properties are increased evidently: the tensile-strength is increased by 25%, the elongation is increased by 32.26% and the hardness is increased by 17.2%. Therefore, the melt-spin treatment is a feasible method to improve the modifying effect of Cu-P master alloy. |
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| Keywords: | Cu-P master alloy ZL109 alloy melt-spin rapid solidification nanocrystal modification refinement |
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