Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8016015 | Materials Letters | 2016 | 4 Pages |
Abstract
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 α2/γ 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.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
A.B. Li, X.P. Cui, G.S. Wang, W. Qu, F. Li, X.X. Zhang, W.C. Gan, L. Geng, S.H. Meng,