Enhanced Low-Temperature Impact Toughness of Ultra-Fine Grained SiCp/ZL108 Composites

Abstract:

A new strategy for increasing the low-temperature toughness of structural materials is in urgent need for overcoming the general rheotropic brittleness in coarse-grain state. Here, a unique phenomenon was observed that ultra-fine-grained (UFG) SiCp/ZL108 composites after severe plastic deformation (SPD) exhibit higher impact toughness at temperatures slightly lower than room temperature. The enhanced impact toughness is attributed to the simultaneous increase of strength and ductility of UFG materials at lower temperatures, related to grains or grain fragment boundary modification. This result demonstrates the advantage of fabricating UFG materials by SPD method and spurs the interest to use UFG materials in low-temperature conditions.

• Periodical: Materials Science Forum (Volumes 706-709)
• Pages: 1793-1798
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.706-709.1793
• Online since: January 2012
• Authors: Jing Hua Jiang, Aibin Ma, Ying Wu, Dan Song, Sheng Hui An, Wu Wen Zhang, Dong Hui Yang, Jian Qing Chen
• Keywords: Impact Toughness, Low-Temperature, Metal Matrix Composite (MMC), Severe Plastic Deformation (SPD), Ultra-Fine Grained UFG)

References

[1] J. Goni, I. Mitxelena and J. Coleto: Materials Science and Technology Vol. 16 (2000) , p.743.

[2] L.G. Chen, S.J. Lin and S.Y. Chang: Composites Science and Technology Vol. 66 (2006) , p.1793.

[3] T. Ozden, E. Kilickap and O. akir: Journal of materials processing technology Vol. 198 (2008), p.220.

[4] S. Ozden, R. Ekici and F. Nair: Composites (Part A) Vol. 38 (2007), p.484.

[5] R. W. Hertzberg, in: Deformation and fracture mechanics of engineering materials. (Wiley, New York, 1989) pp.325-344.

[6] R.Z. Valiev, I. V. Alexandrov, Y. T. Zhu and T. C. Lowe: J. Mater. Res. Vol. 17 (2002), p.5.

[7] X. Zhang, H. Wang, R. O. Scattergood, J. Narayan, C. C. Koch, A. V. Sergueeva and A. K. Mukherjee: Appl. Phys. Lett. Vol. 81 (2002), p.823.

[8] Y. T. Zhu and X. Z. Liao: Nature Materials Vol. 3 (2004), p.351.

[9] A.B. Ma, K. Suzuki, Y. Nishida., N. Saito, I. Shigematsu, M. Takagi, H. Iwata, A. Watazu and T. Imura: Scripta Materialia Vol. 53 (2005), p.211.

DOI: 10.1016/j.actamat.2004.09.017

[10] V.V. Stolyarov, R.Z. Valiev and Y. T. Zhu: Appl. Phys. Lett. Vol. 88, 041905(2006).

[11] Bedir F and Ögel B: investigation of hardness, microstructure and wear properties of SiC-p reinforced Al composites. In: Proceeding of the 11th international conference on machine design and production (2004), Turkey.

[12] A. P. Zhilyaev, B. K. Kim, G. V. Nurislamova, M. D. Baró, J. A. Szpunar and T. G. Langdon: Scripta Mater. Vol. 46 (2002), pp.575-580.

DOI: 10.1016/s1359-6462(02)00018-0

[13] P. J. Apps, J. R. Bowen, and P. B. Prangnell: Acta Mater. Vol. 51 (2003), p.2811.

[14] J.C. Tan and M.J. Tan: Materials science and engineering A Vol. 339(2003), p.81.

[15] H.Q. Li and F. Ebrahimi: Adv. Mater, Vol. 17 (2005), p. (1969).