Fabrication of in situ Ti5Si3/TiAl composites with controlled quasi-network architecture using reactive infiltration
Fabrication of in situ Ti5Si3/TiAl composites with controlled quasi-network architecture using reactive infiltration
复制标题
利用反应渗透法制备具有受控准网络结构的原位 Ti5Si3/TiAl 复合材料
DOI：
10.1016/j.matlet.2016.09.015
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发表时间：
2016-12-15
影响因子：
3
通讯作者：
Meng, S. H.
中科院分区：
文献类型：
--
作者：
Li, A. B.;Cui, X. P.;Meng, S. H.
Fully dense Ti5Si3/TiAl composites were successfully in situ synthesized by reactive infiltration using Ti powders and Al Si alloys as raw materials. Fine Ti5Si3 particles exhibit a unique quasi-network distribution, remarkably hindering the coarsening of alpha 2/gamma lamellar colonies. Compared to the as-cast samples, the mean size of lamellar colonies is much finer and thus the resulting Ti5Si3/TiAl composites show the enhanced room temperature elongation, up to 2.5%, while retaining the ultimate tensile strength of 414 MPa. Moreover, Ti5Si3/TiAl composites display superior high temperature tensile properties. Consequently, the novel Ti5Si3/TiAl composites have potential for high temperature applications in aeronautics and aerospace. (C) 2016 Elsevier B.V. All rights reserved.
