Nanograined Size Pure Iron Elaborated by Means of Spark Plasma Sintering

Damien Fabrègue; Julien Piallat; Éric Maire; Yves Jorand; Véronique Massardier-Jourdan

doi:10.4028/www.scientific.net/MSF.638-642.1691

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HomeMaterials Science ForumMaterials Science Forum Vols. 638-642Nanograined Size Pure Iron Elaborated by Means of...

Nanograined Size Pure Iron Elaborated by Means of Spark Plasma Sintering

Abstract:

In this study, Spark Plasma Sintering has been used to sinter pure iron with an initial crystallite size around 100 nm. The process parameters for sintering pure iron have been optimized in order to obtain fully dense materials and avoid excessive grain growth. Archimede's method has been used to calculate the relative density of the sintered samples. It appears that almost fully dense materials can be obtained (95%). X Ray diffraction applied to the sintered samples shows the presence of iron and of the wustite oxide FeO (around 6% wt) formed during the sintering process. Peak enlargement measurements show that the grain size after sintering is around 200nm. This is confirmed by TEM observations showing a dual distribution of grain size. Finally, mechanical characterization has been carried out. The sintered compact exhibits a very high hardness of about 400 Hv. Compression test reveals a very high maximal stress of about 1.2 GPa and that the ductility in compression is non negligible. Using the Hall and Petch law, the calculated grain size should be around 450 nm which is in accordance with direct observations.

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Periodical:

Materials Science Forum (Volumes 638-642)

Pages:

1691-1696

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.638-642.1691

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Online since:

January 2010

Authors:

Damien Fabrègue, Julien Piallat, Éric Maire, Yves Jorand, Véronique Massardier-Jourdan

Keywords:

Mechanical Property, Microstructure, Nanostructured Materials, Pure Iron, Spark Plasma Sintering (SPS)

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References

[1] Y. Minamino, Y. Koizumi, N. Tsuji, N. Hirohata, K. Mizuuchi, Y. Ohkanda, Science and Technology of Advanced Materials 5 (2004), pp.133-143.

Google Scholar

[2] M. Eriksson, Z. Shen, M. Nygren, Powder Metallurgy, 48 n°3(2005), pp.231-236.

Google Scholar

[3] G. Xie, O. Ohashi, K. Chiba, N. Yamaguchi, M. Song, K. Furuya, T. Noda, Materials Science and Engineering A, A 359 (2003), pp.384-390.

DOI: 10.1016/s0921-5093(03)00393-9

Google Scholar

[4] S. Libardi, M. Zadra, F. Casari, A. Molinari, Materials Science and Engineering A, 478 (2008), pp.243-250.

Google Scholar

[5] B. Srinivasarao, K. Oh-Ishi, T. Ohkubo, T. Mukai, K. Hono, Scripta Materialia, 58 (2008), pp.759-762.

DOI: 10.1016/j.scriptamat.2007.12.016

Google Scholar

[6] F. Tepper, Powder Metallurgy, 43 , n°4 (2000), pp.320-322. Acknowledgements The authors would like to thank O. Caty for the help during the compression test and G. Bonnefont for the SPS experiments.

Google Scholar