Korean Journal of Metals and Materials (대한금속재료학회지)

The Korean Institute of Metals and Materials (대한금속재료학회)
권호 표지
DOI QR코드

DOI QR Code

Enhanced Plasticity of Bulk Amorphous Alloys at Cryogenic Temperature

벌크 비정질 합금의 초저온 소성

  • Yoon, Kyeu-Sang (Department of Materials Science and Engineering, Korea University) ;
  • Lee, Mirim (Department of Materials Science and Engineering, Korea University) ;
  • Lee, Jae-Chul (Department of Materials Science and Engineering, Korea University)
  • 윤규상 (고려대학교 신소재 공학부) ;
  • 이미림 (고려대학교 신소재 공학부) ;
  • 이재철 (고려대학교 신소재 공학부)
  • Received : 2010.01.15
  • Published : 2010.08.22
⟨ Previous Next ⟩

Abstract

We investigated the cryogenic temperature plasticity of a bulk amorphous alloy. Experiments showed that as temperature decreases, the plasticity of the alloy increases, such that the alloy exhibited ~20% of plastic strain when tested at $-196^{\circ}C$. This enhancement in the plasticity at cryogenic temperatures was associated with the formation of abundant shear bands distributed uniformly over the entire surface of the sample. Nonetheless, the serrations, the characteristic feature of the plastic deformation of amorphous alloys, were unclear at $-196^{\circ}C$. In this study, both the enhanced plasticity and the unclear serrations exhibited by the amorphous alloy at cryogenic temperatures were clarified by exploring shear banding behaviors in the context of the velocity and the viscosity of a propagating shear band.

Keywords

Acknowledgement

Supported by : 한국연구재단

References

  1. A. Inoue, Acta Mater. 48, 279 (2000). https://doi.org/10.1016/S1359-6454(99)00300-6
  2. Y. Yokoyama, K. Fukaura, and A. Inoue, Intermetallics 10, 1113 (2002). https://doi.org/10.1016/S0966-9795(02)00141-3
  3. C. J. Gilbert, V. Schroeder, and R. O. Ritchie, Metall. Mater. Trans. A 30A, 1739 (1999).
  4. H. Li, C. Fan, K. Tao, H. Choo, and P. K. Liaw, Adv. Mater. 18, 752 (2006). https://doi.org/10.1002/adma.200501990
  5. Y. Huang, J. Shen, J. Sun, and Z. Zhang, Mater. Sci. Eng. A 498, 203 (2008). https://doi.org/10.1016/j.msea.2008.08.010
  6. A. Kwashima, Y. Zeng, M. Fukuhara, H. Kurishita, N. Nishiyama, H. Miki, and A. Inoue, Mater. Sci. Eng. A 498, 475 (2008). https://doi.org/10.1016/j.msea.2008.08.033
  7. A. Kwashima, T. Okuno, H. Kurishita, W. Zhang, H. Kimura, and A. Inoue, Mater. Trans. 48, 2787 (2007). https://doi.org/10.2320/matertrans.MRP2007161
  8. T. Okuno, A. Kawashima, H. Kurishita, W. Zhang, H. Kimura, and A. Inoue, Mater. Trans. 49, 513 (2008). https://doi.org/10.2320/matertrans.MBW200734
  9. K. W. Park, C. M. Lee, and J. C. Lee, J. Kor. Inst. Met. & Mater. 47, 773 (2009).
  10. M. L. Falk and J. S. Langer, Phys. Rev. E 57, 7192 (1998). https://doi.org/10.1103/PhysRevE.57.7192
  11. M. L. Falk, Phys. Rev. B 60, 7062 (1999). https://doi.org/10.1103/PhysRevB.60.7062
  12. C. A. Schuh, Ac. C. Lund, and T. G. Nieh, Acta Mater. 52, 5879 (2004). https://doi.org/10.1016/j.actamat.2004.09.005
  13. K. W. Park, J. Jang, M. Wakeda, Y. Shibutani, and J. C. Lee, Scripta. Mater. 57, 805 (2007). https://doi.org/10.1016/j.scriptamat.2007.07.019
  14. M. Wakeda, Y. Shibutani, S. Ogata, and J. Park, Intermetallics 15, 139 (2007). https://doi.org/10.1016/j.intermet.2006.04.002
  15. M. R. Lee, K. W. Park, H. J. Sa, and J. C. Lee, J. Kor. Inst. Met. & Mater. 47, 687 (2009).
  16. F. spaepen, Acta. Mater. 25, 407 (1977). https://doi.org/10.1016/0001-6160(77)90232-2
  17. K. W. Park, , M. Wakeda, Y. Shibutani, E. fluery, and J. C. Lee, Met. Mater. Int. 14, 159 (2008). https://doi.org/10.3365/met.mat.2008.04.159
  18. S. J. Lee, B. G. Yoo, J. I. Jang, and J. C. Lee, Met. Mat. Int. 14, 9 (2008). https://doi.org/10.3365/met.mat.2008.02.009
  19. C. M. Lee, K. W. Park, B. J. Lee, J. H. Shim, J. H. Lee, and J. C. Lee, J. Kor. Inst. Met. & Mater. 46, 701 (2008).
  20. W. J. Wright, M. W. Samale, T. C. Hufnagel, M. M. LeBlanc, and J. N. Florando, Acta Mater. 57, 4639 (2009). https://doi.org/10.1016/j.actamat.2009.06.013
  21. D. R. Gaskell, An introduction to transport phenomena in materials engineering, p.35-36, Macmillan Publishing Company, New York (1992).
  22. Y. Shibutani, M. B. Katz, H. Li, and M. L. Falk, Phys. Rev. Lett. 98, 185585 (2007).
  23. K. W. Park, C. M. Lee, E. Fleury, and J. C. Lee, Scripta. Mater. 61, 363 (2009). https://doi.org/10.1016/j.scriptamat.2009.04.017
  24. K. W. Park, C. M. Lee, H. G. Lee, J. H. Lee, and J. C. Lee, J. Kor. Inst. Met. & Mater. 46, 572 (2008).