Mechanical Properties Transformation On Zr54Al17Co29 Bulk Metallic Glass by Partial Crystallization
Keywords:Zr54Al17Co29 BMG, Partial Crystallization, Yield Strength, Plasticity
Study on biomaterials is recently essential for rapid development of medical application and Zr54Al17Co29 BMGbecomes promising candidate due to the lack of toxic elements. Partial crystallization by isothermal annealing at SCL region was used to variate the crystallinities of BMG. The structural and thermal properties of as cast and partially crystallized samples were confirmed by XRD and DSC test, while microvickers and compression test were further utilized to investigate their mechanical properties. By the higher crystallinity, the hardness could be slightly increased in range 540 Â± 5 to 575 Â± 5 Hv. As-cast sample shows the yield strength and plastic strain of 2130 Â± 75 MPa and 2.2 Â± 1.6%. The yield strength is increased by the presence of 10% nanocrystal, afterwards, fall and raise phenomena are obtained with further crystallinity. However, with higher crystallinity, the plasticity is significantly degraded and no more plastic strain observed at sample with 50% of crystallinity. Both the presence of nanocrystalline phase and free volume annihilation are the reason of mechanical properties change on the Zr-based BMG.
Inoue, A., 2000. Stabilization of Metallic Supercooled Liquid and Bulk Amorphous Alloys. Acta Materialia, 48, pp.279â€“306.
Huang, J.C., Chu, J.P. and Jang, J.S.C., 2009. Recent progress in metallic glasses in Taiwan. Intermetallics, 17(12), pp.973â€“987.
Niinomi, M., Nakai, M., and Hieda, J., 2012. Development of new metallic alloys for biomedical applications. Acta Biomaterialia, 8, pp. 3888â€“3903.
Hua, N., Huang, L., He, W., Pan, S., and Zhang, T., 2013. A Ni-free high-zirconium-based bulk metallic glass with enhanced plasticity and biocompatibility. Journal of Non-Crystalline Solids, 376, pp.133â€“138.
Guan, B., Shi, X., Dan, Z., Xie, G., Niinomi, M., and Qin, F., 2016. Corrosion behavior, mechanical properties and cell cytotoxity of Zr-based bulk metallic glasses. Intermetallics, 72, pp.69â€“75.
Wada, T. Qin, F. X., Wang, X. M., Yoshimura, M., Inoue, A., Sugiyama, N., Ito, R., and Matsushita, N., 2009. Formation and bioactivation of Zr-Al-Co bulk metallic glasses. Journal of Materials Research, 24(9), pp.2941â€“2948.
Hajlaoui, K., Yavari, A. R., LeMoulec, A., Botta, W. J., Vaughan, F. G., Das, J., Greer, A. L., and Kvick, Ã…., 2007. Plasticity induced by nanoparticle dispersions in bulk metallic glasses. Journal of Non-Crystalline Solids, 353(3), pp. 327â€“331.
Schuh, C. A., Hufnagel, T. C., and Ramamurty, U., 2007. Mechanical behavior of amorphous alloys. Acta Materialia, 55(12), pp. 4067â€“4109.
Murali, P. and Ramamurty, U., 2005. Embrittlement of a bulk metallic glass due to sub-Tg annealing. Acta Materialia, 53(5), pp. 1467â€“1478.
Kumar, G., Rector, D., Conner, R. D., and Schroers, J., 2009. Embrittlement of Zr-based bulk metallic glasses. Acta Materialia, 57(12), pp. 3572â€“3583.
Mondal, K., Ohkubo, T., Toyama, T., Nagai, Y., Hasegawa, M., and Hono, K., 2008. The effect of nanocrystallization and free volume on the room temperature plasticity of Zr-based bulk metallic glasses. Acta Materialia, 56(18), pp. 5329â€“5339.
Li, T. H., Hsu, K. T., Tsai, P. H., Jang, J. S. C., and Huang, J. C., 2016. Effect of the multiple-metastable crystalline phases on predicting the glass forming ability of ZrAlCo amorphous metallic alloys. unpublished.
Suryanarayana, C. and Inoue, A., 2011. Bulk Metallic Glasses. Taylor and Francis Group, FL: CRC Press.
Jiang, W. H., Liu, F. X., Choo, H., and Liaw, P. K., 2007. Effect of structural relaxation on mechanical behavior of a Zr-based bulk-metallic glass. Materials Transactions, 48(7), pp. 1781â€“1784.
Hsiao, Z. W., Fu, C. C., Tsai, P. H., Jang, J. S. C., Jian, S. R., and Huang, J. C., 2010. Effect of nano-crystallization on the mechanical properties of the (Zr53Cu30Ni9Al8)99.5Si0.5 bulk metallic glass. Materials Science Forum, 638-642, pp. 2933-2937.
This work is licensed under aÂ Creative Commons Attribution-NonCommercial 4.0 International License.