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In-situ Synthesis and Investment Casting of Titanium Matrix (TiC+TiB) Hybrid Composites  

Sung, Si-Young (Department of Advanced Materials Engineering, Sungkyunkwan University)
Park, Keun-Chang (Department of Advanced Materials Engineering, Sungkyunkwan University)
Lee, Sang-Hwa (Department of Metallurgical Engineering, Donga University)
Kim, Young-Jig (Department of Advanced Materials Engineering, Sungkyunkwan University)
Publication Information
Journal of Korea Foundry Society / v.24, no.3, 2004 , pp. 159-164 More about this Journal
Abstract
The aim of the present work is to investigate the possibility of in-situ synthesis and net-shape forming of the titanium matrix (TiC+TiB) hybrid composites using a casting route. From the scanning electron microscopy, electron probe micro-analyzer, X-ray diffraction and thermodynamic calculations, the spherical TiC and needle like TiB reinforced hybrid titanium matrix composites could be obtained in-situ by the conventional melting and casting route between titanium and $B_4C$. No melt-mold reaction occurred between the titanium matrix (TiC+TiB) hybrid composites and the SKK mold, since the mold is consisted with interstitial and substitutional metal-mold reaction products. Not only the sound in-situ synthesis but also the economic net-shape forming of the titanium matrix (TiC+TiB) hybrid composites could be possible by the conventional casting route.
Keywords
In-situ synthesis; Titanium matrix composites; Investment casting; Alpha-case;
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