| 稀土Nd对铸造铝硅合金变质作用的长效性及重熔性研究 |
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| 引用本文： | 檀廷佐,姚正军,袁灿,徐军,魏东博.稀土Nd对铸造铝硅合金变质作用的长效性及重熔性研究[J].稀有金属与硬质合金,2012,40(2):41-44. |
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| 作者姓名： | 檀廷佐 姚正军 袁灿 徐军 魏东博 |
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| 作者单位： | 1. 南京航空航天大学材料科学与技术学院,江苏南京,211106
2. 江苏江旭铸造集团有限公司,江苏宜兴,214203 |
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| 基金项目： | 江苏省科技成果转化专项资金项目，江苏省产学研联合创新资金——前瞻性联合研究项目 |
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| 摘 要： | 以稀土元素Nd为变质剂,采用金属型铸造工艺制备铸造铝硅合金ZL101,并通过金相显微镜、扫描电镜、布氏硬度计和电子万能试验机研究变质时间及重熔次数对合金显微组织和力学性能的影响.结果表明,稀土Nd对合金具有较好的变质作用,并具有长效性和重熔性,变质6h及重熔4次后合金中的共晶硅组织仍呈小片状的变质状态,且合金硬度及拉伸性能均未受明显影响.变质不同时间及重熔不同次数的合金拉伸试样均为解理断裂.
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| 关 键 词： | 稀土Nd 铸造铝硅合金 变质作用 长效性 重熔性 |
Research on the Long-lasting and Remelting Properties of Nd Modification Effect on Cast Al-Si Alloy |
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| TAN Ting-zuo
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YAO Zheng-jun
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YUAN Can
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XU Jun
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WEI Dong-bo.Research on the Long-lasting and Remelting Properties of Nd Modification Effect on Cast Al-Si Alloy[J].Rare Metals and Cemented Carbides,2012,40(2):41-44. |
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| Authors: | TAN Ting-zuo YAO Zheng-jun YUAN Can XU Jun WEI Dong-bo |
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| Affiliation: | 1(1.College of Material Science & Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China;2.Jiangsu Jiangxu Group Co.,Ltd,Yixing 214203,China) |
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| Abstract: | The cast Al-Si alloy ZL101 was prepared by metal model casting process with rare earth element Nd as the modificator.The effects of modification duration and remelting times on the microstructure and mechanical properties of the alloy were investigated by OM,SEM,Brinell hardness tester and electronic universal testing machine.The results show that Nd has a good modification effect on ZL101 alloy,and the effect is of long-lasting and remelting properties.After the alloy is modified for 6 h and remelted by 4 times,its eutectic silicon structure is still in modification state of small slices,and its hardness and tensile properties are not significantly affected.All the tensile specimens of the alloys with different modification duration and different remelting times show cleavage fracture. |
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| Keywords: | rare earth Nd cast Al-Si alloy modification long-lasting property remelting property |
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