| 自然沉降法去除铝硅合金中铁相的机制探讨 |
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| 引用本文： | 王耀武,冯乃祥,孙挺,尤晶,秦剑.自然沉降法去除铝硅合金中铁相的机制探讨[J].稀有金属,2010,34(1). |
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| 作者姓名： | 王耀武 冯乃祥 孙挺 尤晶 秦剑 |
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| 作者单位： | 1. 东北大学材料与冶金学院,辽宁,沈阳,110004
2. 中国铝业河南分公司,河南,郑州,450041 |
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| 基金项目： | 国家高技术研究发展计划(863计划)支持项目 |
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| 摘 要： | 对碳电热还原法生产的共晶铝硅合金加锰自然沉降法除铁进行了研究。通过差热热重及对自然沉降后获得的合金富铁相成分进行分析,结果表明:共晶铝硅合金加锰后,锰会与合金中的富铁相结合,增大富铁相的密度,提高富铁相的初晶温度;当合金中Mn/Fe达到1以上时,富铁相的初晶温度提高100℃以上;当富铁相中锰含量大于10%时,多呈块状,利于沉降到合金熔体底部,当锰含量低于6%时,富铁相多为针状留在合金中。通过加锰自然沉降可将合金中60%以上的富铁相去除。
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| 关 键 词： | 一次铝硅合金 自然沉降 除铁 富铁相 共晶铝硅合金 |
Mechanism of Removing Iron Phase in Al-Si Alloy by Natural Deposition |
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| Wang Yaowu,Feng Naixiang,Sun Ting,You Jing,Qin Jian.Mechanism of Removing Iron Phase in Al-Si Alloy by Natural Deposition[J].Chinese Journal of Rare Metals,2010,34(1). |
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| Authors: | Wang Yaowu Feng Naixiang Sun Ting You Jing Qin Jian |
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| Affiliation: | Wang Yaowu1,Feng Naixiang1,Sun Ting1,You Jing1,Qin Jian2 (1. School of Materials , Metallurgy,Northeastern University,Shenyang 10004,China,2. Aluminum Corporation of China Henan Branch,Zhengzhou 450041,China) |
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| Abstract: | The removing iron process by natural deposition of eutectic Al-Si alloys produced by carbothermal reduction was studied. The TG-DAT curve and scanning electronic microscopy of iron-rich phases in Al-Si alloy was analyzed. The results showed that after adding manganese in Al-Si alloy,the manganese could form intermetallic phases with iron-rich phases,and increased the density of iron-rich phases,and increased the primary crystallization temperature of iron-rich phases. When the ratio of Mn/Fe was higher than... |
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| Keywords: | coarse Al-Si alloy natural deposition removing iron iron-rich phases eutectic Al-Si alloy |
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