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Microstructure and Mechanical Properties of NiTi2-TiB Composite Fabricated by Spark Plasma Sintering

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DOI: 10.4236/wjet.2015.33C013    3,792 Downloads   4,220 Views   Citations

ABSTRACT

Composites of NiTi2-TiB have been fabricated using spark plasma sintering and mechanical properties have been investigated. Dense specimens of monolithic NiTi2 have been obtained by the sintering at 950?C. By the x-ray diffraction measurements it has been shown that NiTi2 co-exists with TiB in equilibrium at 950?C. The bending strength of NiTi2-TiB composite increases with increasing the volume fraction of TiB2 up to 60 vol%. The maximum bending strength of 730 MPa has been obtained for NiTi2-60vol% TiB2. The Vickers hardness also increases with increasing the volume fraction of TiB up to 70% and the highest Vickers hardness of 1620 Hv has been obtained for NiTi2-70%TiB.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Yoshida, M. , Shiraishi, H. and Ikki, N. (2015) Microstructure and Mechanical Properties of NiTi2-TiB Composite Fabricated by Spark Plasma Sintering. World Journal of Engineering and Technology, 3, 84-88. doi: 10.4236/wjet.2015.33C013.

References

[1] Lagoudas, D.C. (2008) Shape Memory Alloys Modeling and Engineering Applications. Springer, Texas.
[2] Hiraga, H., Inoue, T., Shimura, H. and Matsunawa, A. (1999) Cavitation Erosion Mechanism of NiTi Coatings Made by Laser Plasma Hybrid Spraying. Wear, 231, 272-278. http://dx.doi.org/10.1016/S0043-1648(99)00133-7
[3] Wang, H.W. and Liu, Y.F. (2002) Microstructure and Wear Resistance of Laser Clad Ti5Si3/NiTi2 Intermetallic Composite Coating on Titanium Alloy. Materials Science and Engineering: A, 338, 126-132. http://dx.doi.org/10.1016/S0921-5093(02)00076-X
[4] Rampin, I., Brunelli, K., Dabala, M. and Magrini, M. (2009) Effect of Diffusion of Ni and B on the Microstructure and Hardness of Ti Cp. Journal of Alloys and Compounds, 481, 246-253. http://dx.doi.org/10.1016/j.jallcom.2009.03.080
[5] Yurko, G.A., Barton, J.W. and Parr, J.G. (1959) The crystal structure of Ti2Ni. Acta Crystallographica, 12, 909-911. http://dx.doi.org/10.1107/S0365110X59002559
[6] Panda K.B. and Chandran, K.S.R. (2003) First Principles Determination of Elastic Constants and Chemical Bonding of Titanium Boride (TiB) on the Basis of Density Functional Theory. Acta Materialia, 54, 1641-1657. http://dx.doi.org/10.1016/j.actamat.2005.12.003
[7] Atri, R.R., Ravichandran, K.S. and Jha, S.K. (1999) Elastic Properties of in-Situ Processed Ti-TiB Composition Measured by Impulse Excitation of Vibration. Materials Science and Engineering: A, 271, 150-159. http://dx.doi.org/10.1016/S0921-5093(99)00198-7
[8] Gorsse, S., Petitcorps, Y.L., Matar, S. and Rebillat, F. (2003) Investigation of the Young’s Modulus of TiB Needles in Situ Produced in Titanium Composite. Materials Science and Engineering: A, 340, 80-87. http://dx.doi.org/10.1016/S0921-5093(02)00188-0
[9] Koo, M.Y., Park, J.S., Park, M.K., Kim, K.T. and Hong, S.H. (2012) Effect of Aspect Ratios of in Situ Formed TiB Whiskers on the Mechanical Properties of TiBw/Ti-6Al-4V Composites. Scripta Materialia, 66, 487-490. http://dx.doi.org/10.1016/j.scriptamat.2011.12.024
[10] Shen, K., Zhang, Z., Wei, S., Wang, F. and Lee, S. (2011) Microstructure and Mechanical Properties of the in Situ TiB-Ti Metal Matrix Composites Synthesized by Spark Plasma Sintering Process. Journal of Alloys and Compounds, 509, 7692-7696. http://dx.doi.org/10.1016/j.jallcom.2011.05.017
[11] Zhang, Z., Shen, X., Wen, S., Luo, J., Lee, S. and Wang, F. (2010) In Situ Reaction Synthesis of Ti-TiB Composites Containing High Volume Fraction of TiB by Spark Plasma Sintering Process. Journal of Alloys and Compounds, 503, 145-150. http://dx.doi.org/10.1016/j.jallcom.2010.04.218

  
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