| 强磁场对铝硅合金变质效果的影响 |
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| 引用本文： | 连峰,李廷举.强磁场对铝硅合金变质效果的影响[J].大连海事大学学报(自然科学版),2007,33(2):7-11. |
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| 作者姓名： | 连峰 李廷举 |
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| 作者单位： | 大连海事大学机电与材料工程学院 辽宁大连116026(连峰)，大连理工大学材料工程学院 辽宁大连116024(李廷举) |
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| 摘 要： | 为解决Al-Si合金存在的Na变质重熔失效和有效时间短及P变质处理后初晶Si偏聚问题,利用施加强磁场的方法,分别对亚共晶Al-6%Si合金和共晶Al-12.6%Si合金进行Na盐变质处理,对过共晶Al-18%Si合金进行P盐变质处理.结果发现对于亚共晶Al-6%Si合金,施加强磁场的条件下重熔,Na变质没有失效;对于共晶Al-12.6%Si合金,施加强磁场延长了变质有效时间;对于过共晶Al-18%Si合金,施加强磁场使凝固组织中的初晶Si相均匀分布.强磁场有助于改善Al-Si合金的变质效果.
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| 关 键 词： | 强磁场 铝硅合金 变质处理 共晶Si 初晶Si |
| 文章编号： | 1006-7736（2007）02-0007-05 |
| 修稿时间： | 2007-04-04 |
Effects of strong magnetic field on modification of Al-Si alloy |
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| LIAN Feng,LI Ting-ju.Effects of strong magnetic field on modification of Al-Si alloy[J].Journal of Dalian Maritime University,2007,33(2):7-11. |
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| Authors: | LIAN Feng LI Ting-ju |
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| Institution: | 1. College of Electromechanics and Materials Engineering, Dalian Maritime University, Dalian 116026, China; 2. College of Materials Engineering, Dalian University of Technology, Dalian 116024, China |
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| Abstract: | Strong magnetic field method was adopted to solve the problems,such as the loss of efficiency after re-melt,the short effective time after Na modification,and the primary Si distributed unevenly after P modification.Al-6%Si hypoeutectic alloy and Al-12.6%Si eutectic alloy were modified with Na-salt,and Al-18%Si hypereutectic alloy was modified with P-salt in strong magnetic field respectively.The experimental results show that for Al6%Si hypoeutectic alloy,the magnetic field can avoid the loss of efficiency,and for Al-12.6%Si eutectic alloy,the strong magnetic field can prolong the effective time of the modification.For Al-18%Si hypereutectic alloy,the primary Si distributes evenly when the strong magnetic field imposed.Experimental results also show that the strong magnetic field can improve the modification. |
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| Keywords: | strong magnetic field Al-Si alloy modification treatment eutectic Si primary Si |
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