Abstract
The mechanical properties of bulk specimens of nanocrystalline 0.55% C steel with a grain size of 30 nm and a relative density higher than 97% have been determined. Samples were obtained by cold compaction and warm sintering at 425 °C of nanocrystalline powders obtained by mechanical attrition in a planetary ball mill. In both processes an Ar protective atmosphere was used in order to avoid oxygen contamination. X-ray diffraction (XRD) and Transmission electron microscopy (TEM) analysis indicated that a volume-averaged grain size of 30 nm is maintained after the warm consolidation processes. TEM studies also showed equiaxed ferrite with no dislocations inside the grains. However, the grain size distribution was no homogeneous as large grains of 100 nm were observed. An average hardness of 8.5 GPa was obtained, in good agreement with other bulk specimens of nanocrystalline Fe or eutectoid carbon steel prepared by other authors. Compression tests of bulk specimens at a strain rate of 10−4 s−1 showed a compression strength near 2,500 MPa with an absolute lack of ductility. Nanoindentation measurements at room temperature provided a strain rate sensitivity parameter of 0.012, indicating that the deformation mechanism is somehow governed by diffusion mechanisms.
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References
Gleiter H (1989) Prog Mat Sci 33:223
Valiev RZ, Alexandrov IV, Zhu YT, Lowe TC (2002) J Mat Res 17:5
Rawers J, Krabbe R (1998) J Mat Synth Process 6:133
Mallow TR, Koch CC (1998a) Acta Mater 46:6459
Jia D, Ramesh KT, Ma E (2003) Acta Mater 51:3495
Kim HS, Estrin Y (2001) Appl Phys Lett 79:4115
Cheng S, Ma E, Wang YM et al (2005) Acta Mater 53:1521
Khan AS, Zhang H, Takacs L (2000) Int J Plast 16:1459
Takaki S, Kawasaki K, Futamura Y, Tsuchiyama T (2006) Mater Sci Forum 503–504:317
Wang YM, Ma E (2004a) Acta Mater 52:1699
Wang YM, Ma E (2004b) Mat Sci Eng A 375:46
Asaro RJ, Suresh S (2005) Acta Mater 53:3369
Jang D, Atzmon M (2003) J Appl Phys 93:9285
Van Swygenhoven H, Caro A (1997) Appl Phys Lett 71:1652
Kim HS, Estrin Y (2005) Acta Mater 53:765
May J, Höppel HW, Göken M (2005) Scrip Mater 53:189
Schweiger R, Moser B, Dao M et al (2003) Acta Mater 51:5159
Wei Q, Cheng S, Ramesh KT, Ma E (2004a) Mat Sci Eng A 381:71
Mallow TR, Koch CC, Miraglia PQ, Murty KL (1998) Mat Sci Eng A 252:36
Wei Q, Kecskes L, Jiao T et al (2004b) Acta Mater 52:1859
Mallow TR, Koch CC (1997) Acta Mater 45:2177
Kimura Y et al (2000) In: Symposium on ultrafine grained materials at the 2000 TMS annual meeting, Edited by the minerals, metals and materials society, p 277
Nieman GW, Weertman JR, Siegel RW (1991) J Mat Res 6:1012
Mueller J, Durst K, Amberger D, Göken M (2006) Mat Sci Forum 503–504:31
FullProf, Rodríguez Carbajal J (2004) Laboratoire Léon Brillouin (CEA-CNRS). Centre d’etudes de Saclay, 91191, Gif sur Yvette, Cedes, France
Williamson GK, Hall WK (1953) Acta Metall 1:22
Scardi P, Leoni M, Delhez R (2004) J Appl Cryst 37:381
Ungar T, Tichy G (1999) Phys Stat Sol A 171:425
Revesz A, Ungar T, Borbely A, Lendvai J (1996) Nanostruct Mater 7:779
He L, Ma E (1996) J Mat Res 11:72
Zhang HW, Gopalan R, Mukai T, Hono K (2005) Scrip Mater 53:863
Murayama M, Howe JM, Hidaka H, Takaki S (2003) ISIJ Int 43:755
Ohsaki S, Hono K, Hidaka H, Takaki S (2005) Scrip Mater 52:271
Lluma J, Benito JA, Roca A, Cabrera JM, Prado JM (2006) Mat Sci Forum 503–504:1007
Mallow TR, Koch CC (1998b) Metall Mater Trans A 29:2285
Kim J, Umemoto M, Liu ZG, Tsuchiya K (2001) ISIJ Int 41:1389
Xu Y, Umemoto M, Tsuchiya K (2002) Mater Trans 43:2205
Khan A (2006) Int J Plast 22:195
Acknowledgements
The authors wish to thank Drs. Antoni Roca and Jordi Llumà for help in the studies of the milled powder as well as Pep Bassas and Montserrat Marçal for assistance in XRD and SEM observations, respectively. The authors also thank the assistance provided by Dr. Jaume Caro in the nanoindentation tests. This work was supported by CICYT (project DPI 2005-09324). R. Rodríguez-Baracaldo is also grateful for the Fundación Carolina grant.
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Rodríguez-Baracaldo, R., Benito, J.A., Cabrera, J.M. et al. Mechanical response of nanocrystalline steel obtained by mechanical attrition. J Mater Sci 42, 1757–1764 (2007). https://doi.org/10.1007/s10853-006-0650-2
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DOI: https://doi.org/10.1007/s10853-006-0650-2