| 硼对Al-20Si合金初晶硅的细化作用 |
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| 引用本文： | 庞金辉,崔庆玲,王明星,刘志勇,刘忠侠,宋天福.硼对Al-20Si合金初晶硅的细化作用[J].特种铸造及有色合金,2010,30(1). |
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| 作者姓名： | 庞金辉 崔庆玲 王明星 刘志勇 刘忠侠 宋天福 |
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| 作者单位： | 郑州大学物理工程学院,材料物理教育部重点实验室 |
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| 摘 要： | 研究了B对过共晶Al-20Si合金中初晶Si的细化作用.结果表明,B对Al-20Si合金中初晶Si具有良好的细化作用.初晶Si尺寸先随B含量的增加而减小,当B含量为0.065%时初晶Si尺寸达到最小,之后,随B含量的增加而增大;添加微量的Ca和Mg可促进B对初晶Si的细化作用;C_2Cl_6精炼除气会削弱B对初晶Si的细化效果.B与Ca、Mg等元素能反应生成可作为Si异质核心的化合物可能是B具有细化初晶Si作用的原因.
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| 关 键 词： | 过共晶Al-Si合金 Al-B中间合金 初晶Si 细化效果 |
Effects of B on Refining Primary Si Phase in Hypereutectic Al-Si Alloy |
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| Pang Jinhui,Cui Qingling,Wang Mingxing,Liu Zhiyong,Liu Zhongxia,Song Tianfu.Effects of B on Refining Primary Si Phase in Hypereutectic Al-Si Alloy[J].Special Casting & Nonferrous Alloys,2010,30(1). |
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| Authors: | Pang Jinhui Cui Qingling Wang Mingxing Liu Zhiyong Liu Zhongxia Song Tianfu |
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| Affiliation: | Pang Jinhui,Cui Qingling,Wang Mingxing,Liu Zhiyong,Liu Zhongxia,Song Tianfu(Key Laboratory of Material Physics,Ministry of Education,Zhengzhou University,Zhengzhou,China) |
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| Abstract: | Effects of B on refining primary Si phase in hypereutectic Al-Si alloy were observed by OM(optical microscope),SEM(scanning electron microscope).The results reveal that B exhibits excellent refinement on primary Si phase in Al-20Si alloy.Size of primary Si phase is firstly decreased and then increased with increasing in B content,in which the smallest primary Si size can be observed with 0.065% B content.Trace Ca and Mg addition can promote the refining effects of B on primary Si phase,while C2Cl6 treatment... |
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| Keywords: | Hypereutectic Al-Si Alloy Al-B Master Alloy Primary Si Refining Effects |
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