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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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含Ca,Si镁合金的铸态组织及其形成机制
Keywords: Mg--Ca--Si合金,CaMgSi相
Abstract:
利用金相、电子显微镜、X射线衍射仪和X射线能谱仪研究了含Ca，Si镁合金的铸态组织特征。结果表明含Si较低的合金由镁基体及CaMgSi相组成，而含Si较高的合金由镁基体及CaMgSi和Mg2Si两种相组成。CaMgSi相呈三种不同的形态离散块状、微细点状和针状，而本身是针状的Mg2Si则以“汉字形”团块的形态存在。根据Mg--Mg2Si--CaMgSi赝三元相图，详细讨论了铸态组织的形成机制。
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