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http://dx.doi.org/10.3740/MRSK.2002.12.9.696

Formation of a V-Added Ti Aluminide Multilayered Sheet by Self-Propagating High-Temperature Synthesis and Diffusion Annealing  

Kim, Yeon-Wook (Department of Materials Science & Engineering, Keimyung University)
Publication Information
Korean Journal of Materials Research / v.12, no.9, 2002 , pp. 696-700 More about this Journal
Abstract
The Ti-aluminide intermetallic compound was formed from high purity elemental Ti and Al foils by self-propagating, high-temperature synthesis(SHS) in hot press. formation of $TiAl_3$ at the interface between Ti and Al foils was controlled by temperature, pressure, heating rate, and so on. According to the thermal analysis, it is known in this study that the heating rate is the most important factor to form the intermetallic compound by this SHS reaction. The V layer addition between Al and Ti foils increased SHS reaction temperatures. The fully dense, well-boned inter-metallic composite($TiA1/Ti_3$Al) sheets of 700 m thickness were formed by heat treatment at $1000^{\circ}C$ for 10 hours after the SHS reaction of alternatively layered 10 Ti and 9 Al foils with the V coating layer. The phases and microstructures of intermetallic composite sheets were confirmed by EPMA and XRD.
Keywords
Ti-aluminide intermetallic compound; SHS reaction; TiA1/$Ti_3$Al composite sheets; diffusion annealing; V addition;
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