Densification Behaviors of Fe-TiC System during Spark Plasma Sintering

Abstract:

Article Preview

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.

Info:

Periodical:

Materials Science Forum (Volumes 534-536)

Edited by:

Duk Yong Yoon, Suk-Joong L. Kang, Kwang Yong Eun and Yong-Seog Kim

Pages:

509-512

Citation:

Y.-H. Lee et al., "Densification Behaviors of Fe-TiC System during Spark Plasma Sintering", Materials Science Forum, Vols. 534-536, pp. 509-512, 2007

Online since:

January 2007

Export:

Price:

$38.00

[1] A. . Pyzalla, C. Genzel, W. Reimers : Mater. Sci. Eng., A 212 (1996) 130.

[2] E. Haimi, M. Talvitie, E.O. Ristolainen : Scr. Metall. Mater. 30 (1995) 1333.

[3] B.S. Terry, O.S. Chinyamakobvu : Mater. Sci. Technol. 7 (1991) 842.

[4] B.S. Terry, O.S. Chinyamakobvu : Mater. Sci. Technol. 8 (1992) 399-405.

[5] B.S. Terry, O.S. Chinyamakobvu : J. Mater. Sci. Lett. 10 (1991) 628- 629.

[6] Z. Liu, H. Fredriksson : Metall. Mater. Trans., A 28 A (1997) 471-483.

[7] A. Chrysanthou, N.W. Davies : J. Mater. Sci. Lett. 15 (1996) 473.

[8] Bolton. J. Moderndevelopments in sintered HSS. Met Powder Rep (1996; 5191) 30-8.

[9] Hoyle G. High speed steel. London : butterworth (1988).

[10] J.D. Bolton, A.J. Gant : Powder Metallurgy 40 2 (1997) 143-151.

[11] Z.Y. Liu, N.H. Loh, K.A. Khor, S.B. Tor : Materials and Engineering A 311 (2001) 13-21.

[12] Torralba JM, Cambronero LEG, Ruiz-prieto JM : Das Neves MM. Sinterability study of PM M2 and T15 HSS reinforced with tungsten and titanium carbides (Powder Metall, 1993, 3691, 55- 66).

DOI: https://doi.org/10.1179/pom.1993.36.1.55

[13] M. Tokita : The Mechanism od Spark Plasma Sintering ( Proceedings of second Symposium on SPS, 1997, 1).

[14] N. Tamari, T. Tanaka, K. Tanaka, I. Kondoh, M. Kawahara and M. Tokita : J. Ceram. Soc. Jpn. 102.

[7] (1995) 740.