| Mg-5Sn-xSi合金的铸态显微组织和性能 |
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| 引用本文： | 王艳丽,郭学锋,黄丹,王英.Mg-5Sn-xSi合金的铸态显微组织和性能[J].铸造技术,2011,32(8). |
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| 作者姓名： | 王艳丽 郭学锋 黄丹 王英 |
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| 作者单位： | 河南理工大学材料科学与工程学院,河南焦作,454000 |
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| 基金项目： | 河南省科技计划项目(102102210031); 河南省教育厅自然科学研究计划项目(2010A430008) |
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| 摘 要： | 根据4Mg+ SiO2=Mg2Si+2MgO,利用高纯度石英砂与Mg液反应,采用普通凝固方法制备Mg-Si二元中间合金.利用Mg-Si中间合金、99.9％Mg和99.9％Sn制备Mg-Sn-Si三元合金,通过调整Si的含量研究Mg-5Sn-xSi系合金的组织和性能.利用光学显微金相定量分析、XRD分析,以及显微硬度测试,研究添加0～10 ％Si铸态Mg-Sn-Si合金的显微组织与力学性能.实验结果表明,Mg-Sn-Si合金主要由α-Mg、Mg2 Sn和Mg2 Si 3相组成,无Mg-Sn-Si三元相.当Si≤6％时,合金显微硬度随Si含量的增加而增加.当Si含量≥6％时,合金显微硬度随Si含量的增加而降低.
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| 关 键 词： | Mg2 Si相 Mg-Sn-Si合金 显微硬度 |
Microstructure and Mechanical Properties of As-cast Mg-Sn-Si Alloys |
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| WANG Yan-li,GUO Xue-feng,HUANG Dan,WANG Ying.Microstructure and Mechanical Properties of As-cast Mg-Sn-Si Alloys[J].Foundry Technology,2011,32(8). |
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| Authors: | WANG Yan-li GUO Xue-feng HUANG Dan WANG Ying |
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| Affiliation: | WANG Yan-li,GUO Xue-feng,HUANG Dan,WANG Ying(School of Material Science and Engineering,Henan Polytechnic University,Jiaozuo 454000,China) |
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| Abstract: | According to chemical reaction of 4Mg+SiO2=Mg2Si+2MgO,intermediate Mg-Si alloys with different Si contents was prepared by reaction between liquid Mg and solid SiO2.Mg-Si master alloys was prepared using pure Mg(99.9%) and pure Sn(99.9%) respectively.Mg-Sn-Si alloys were prepared by conventional casting processes.The microstructures and properties of Mg-5Sn-xSi alloys were studied.The observation and analysis were carried out to study the microstructure and mechanical properties of as-cast Mg-Sn-Si alloys b... |
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| Keywords: | Mg2Si phase Mg-Sn-Si alloys Micro-hardness |
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