Microstructure and orientation relationships of Mg alloy matrix composite reinforced with SiC whiskers and B4C particles
Microstructure and orientation relationships of Mg alloy matrix composite reinforced with SiC whiskers and B4C particles
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DOI：
10.1016/j.matlet.2007.03.065
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发表时间：
2007-11
影响因子：
3
通讯作者：
Chen Yuanjing;Dian‐sen Li
中科院分区：
文献类型：
--
作者：
Chen Yuanjing;Dian‐sen Li
利用透射电镜和高分辨电镜研究了SiC晶须和B4 C颗粒增强ZK 60 A镁合金基复合材料的微观组织和取向关系。MgO纳米晶颗粒在SiC/Mg界面处形成，与SiC晶须呈立方对立方取向关系。在B4 C颗粒附近形成MgB 2纳米棒。观察到SiC晶须与Mg之间的两种取向关系，即[1 <$11]SiC|| [0001] Mg和（022）SiC||（112 <$0）Mg和[1 <$11]SiC|| [112）SiC||（011 <$2）毫克。几何学上，[1]SiC|| [0001] Mg和（022）SiC||（112 <$0）Mg比[1 <$11]SiC更有利||[112）SiC||（011 <$2）毫克。
The microstructure and orientation relationships of ZK60A magnesium alloy matrix composite reinforced with SiC whiskers and B4C particles have been studied by means of transmission electron microscopy and high-resolution electron microscopy. MgO nanocrystalline particles are formed at SiC/Mg interfaces with a cube-on-cube orientation relationship with SiC whiskers. MgB2nanorods are formed near the B4C particles. Two types of orientation relationships between the SiC whisker and Mg are observed, which are [1¯11]SiC|| [0001]Mgand (022¯)SiC|| (112¯0)Mg, and [1¯11]SiC|| [112¯0]Mgand (022¯)SiC|| (011¯2)Mg. Geometrically, [1¯11]SiC|| [0001]Mgand (022¯)SiC|| (112¯0)Mgis more favorable than [1¯11]SiC|| [112¯0]Mgand (022¯)SiC|| (011¯2)Mg.