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金属学报  2006, Vol. 42 Issue (8): 792-796     
  论文 本期目录 | 过刊浏览 |
SiCf/ Ti-22Al-23Nb-2Ta合金复合材料的界面微结构
郭长友;张彩碚;贺连龙;张国兴;雷家锋
东北大学理学院
MICROSTRUCTURE STUDY OF INTERFACIAL ZONE OF SiCf/ Ti-22Al-23Nb-2Ta MATRIX COMPOSITE
Changyou Guo
东北大学理学院
引用本文:

郭长友; 张彩碚; 贺连龙; 张国兴; 雷家锋 . SiCf/ Ti-22Al-23Nb-2Ta合金复合材料的界面微结构[J]. 金属学报, 2006, 42(8): 792-796 .
, , , , . MICROSTRUCTURE STUDY OF INTERFACIAL ZONE OF SiCf/ Ti-22Al-23Nb-2Ta MATRIX COMPOSITE[J]. Acta Metall Sin, 2006, 42(8): 792-796 .

全文: PDF(1214 KB)  
摘要: 利用分析电子显微镜(AEM)研究了磁控溅射法+真空热压方法制备的SiC纤维增强Ti-22Al-23Nb-2Ta(原子分数, %)合金复合材料的界面微结构. 该复合材料的纤维/合金界面由细晶粒的TiC+TiSi层、等轴晶TiC层和(Al, Ti)Nb2相层组成. 界面的形成主要是基体合金中的Ti元素与SiC纤维表面的C涂层直接反应生成TiC; 同时导致在次层形成贫Ti层和贫Ti层中Nb元素富集, 以致形成(Al, Ti)Nb2相.
关键词 SiCf/Ti基合金复合材料分析电子显微镜    
Abstract:The interfacial microstructure of SiC fibre reinforced Ti-22Al-23Nb-2Ta matrix composite, which was prepared by hot isostatic pressing (HIP) of power-clothed precursor wire, was investigated by analytical transmission electron microscopy (TEM). A new interfacial structure, consisting of fine grain TiC+TiSi, equiaxed TiC and (Al,Ti)Nb2 phase layer, was found at the fibre /matrix interface of the composite. A formation mechanism of the interface is proposed: the reaction of Ti with C-coating results in the formation of TiC; as a consequence, Nb is rich in Ti-depletion layer beneath TiC layer and forms (Al,Ti)Nb2 phase.
Key wordstransmission electron microscopy(TEM)    interfacial microstructure    composite    (Al    Ti)Nb2 phase
收稿日期: 2005-12-09     
ZTFLH:  TG146.2  
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