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Densification Behaviors of Fe-TiC System during Spark Plasma Sintering

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Abstract:

The SPS process is a synthetic technique which enables sinter-bonding to occur at low temperature and within a short sintering time. Furthermore, it produces finer grain size than conventional sintering methods. Fe-TiC system is a relatively light material and is one third the size of tungsten carbide and less than half weight of tool steel. It is cost effective when used in Fe-TiC system due to high mass effect with low density and relatively low cost of changing tools and bearings. Fe-TiC system can be machined easily with conventional equipment. In the present work, SPS was conducted at the temperatures of 1200, 1250 and 1300°C at the sintering time of 3, 5 and 10min. As the sintering temperature and holding time increased, the relative density decreased and the hardness reached the lowest at 1250°C. These are attributed to the more pore being generated by liquid Pool at 1250°C and 1300°C. The result of the microstracture observation showed more M6C and MC carbide by liquid Pool as sintering temperature and holding time increased.

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Periodical:

Materials Science Forum (Volumes 534-536)

Pages:

509-512

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.534-536.509

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Online since:

January 2007

Authors:

Yong-Hee Lee, Dong Kyu Park, Sung Yeal Bea, In Sup Ahn

Keywords:

High Speed Steel, Spark Plasma Sintering (SPS), Titanium Carbide

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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