| 磷元素对Al-Mg2Si合金显微组织的影响 |
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| 引用本文： | 艾秀兰,李英民.磷元素对Al-Mg2Si合金显微组织的影响[J].大连铁道学院学报,2005,26(1):80-82. |
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| 作者姓名： | 艾秀兰 李英民 |
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| 作者单位： | [1]大连交通大学材料科学与工程学院，辽宁大连116028 [2]沈阳工业大学，辽宁沈阳110023 |
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| 摘 要： | 研究了P元素的加入对Al-Mg2Si合金组织的影响．结果表明：在常规铸造条件下，Al-Mg2Si合金中初晶Mg2Si为粗大的多角形块状．经过P元素变质后合金中的初晶Mg2Si得到明显细化，并成为分布较均匀的块状或球团状，当加入的P元素量为0．5％时，初晶Mg2Si最细小、圆整．其实质是P元素与Mg元素形成的Mg3(PO4)2化合物充当了Mg2Si的形核核心。
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| 关 键 词： | 显微组织 磷元素 Mg2Si 常规铸造 合金组织 元素形成 多角形 化合物 块状 变质 形核 |
Microstructure Study of Al-Mg_2Si Alloy by the Modification of P Addition |
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| AI Xiu-lan,LI Ying-min.Microstructure Study of Al-Mg_2Si Alloy by the Modification of P Addition[J].Journal of Dalian Railway Institute,2005,26(1):80-82. |
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| Authors: | AI Xiu-lan LI Ying-min |
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| Institution: | AI Xiu-lan~1,LI Ying-min~2 |
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| Abstract: | The influence of P element on the structure of Al-Mg_2Si alloy has been studied. The results show that the primary Mg_2Si phase of Al-Mg_2Si alloy is solidified into large polygonal shape on ordimary condition. After P element is added in the Al-Mg_2Si alloy, the polyhedral primary Mg_2Si becomes rod-like or granular and its distributing becomes more uniform. When P element addition is 0.5wt%, finer primary Mg_2Si crystals are obtained.The reason is that compound Mg_3(PO_(4))_2becomes the core of primary Mg_2Si. |
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| Keywords: | modifacation Al-Mg_2Sialloy microstructure |
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