Hostname: page-component-586b7cd67f-tf8b9 Total loading time: 0 Render date: 2024-11-24T19:58:46.386Z Has data issue: false hasContentIssue false
  • English
  • Français

Deformation-induced nanocrystallization: A comparison of two amorphous Al-based alloys

Published online by Cambridge University Press:  01 March 2005

W.H. Jiang ,
F.E. Pinkerton  and
M. Atzmon
W.H. Jiang
Affiliation:
Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, Michigan 48109
F.E. Pinkerton
Affiliation:
General Motors R & D Center, Warren, Michigan 48090
M. Atzmon
Affiliation:
Department of Nuclear Engineering and Radiological Sciences, and Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109
Get access

Abstract

Using conventional and high-resolution transmission electron microscopy (HRTEM), the effects of rolling at room temperature on the microstructures of amorphous Al90Fe5Gd5 and Al86.8Ni3.7Y9.5 were compared. In rolled Al90Fe5Gd5, nanocrystallites were observed at shear bands, whereas none were observed in rolled Al86.8Ni3.7Y9.5. When HRTEM was combined with with Fourier transform filtering, nanoscale, low-density defects were imaged. In Al90Fe5Gd5, the shear bands contain few defects, which are concentrated at the boundary zone between the shear bands and undeformed region, whereas in Al86.8Ni3.7Y9.5, the shear bands contain a uniform distribution of defects with a density higher than the undeformed region. The preferential precipitation of nanocrystallites in rolled Al90Fe5Gd5 is attributed to a kinetic effect due to uniformly-distributed excess free volume in the shear bands.

Keywords

Metallic glassPhase transformationTransmission electron microscopy (TEM)
Type
Articles
Information
Journal of Materials Research , Volume 20 , Issue 3 , March 2005 , pp. 696 - 702
Copyright
Copyright © Materials Research Society 2005

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1.He, Y., Shiflet, G.J. and Poon, S.J.: Ball milling-induced nanocrystal formation in aluminum-based metallic glasses. Acta Metall. Mater. 43, 83 (1995).CrossRefGoogle Scholar
2.Fan, G.J., Quan, M.X., Hu, Z.Q., Löser, W. and Eckert, J.: Deformation-induced microstructural changes in Fe40Ni40P14B6 metallic glass. J. Mater. Res. 14, 3765 (1999).CrossRefGoogle Scholar
3.Xu, J. and Atzmon, M.: Temperature dependence of deformation-assisted crystallization in amorphous Fe78B13Si9. Appl. Phys. Lett. 73, 1085 (1998).CrossRefGoogle Scholar
4.Chen, H., He, Y., Shiflet, G.J. and Poon, S.J.: Deformation-induced nanocrystal formation in shear bands of amorphous alloys. Nature 367, 541 (1994).CrossRefGoogle Scholar
5.Ogura, A., Sato, M., Tarumi, R., Shimojo, M., Takashima, K. and Higo, Y.: Formation of nano-sized crystals during plastic deformation in amorphous alloys, in Structure and Mechanical Properties of Nanophase Materials—Theory and Computer Simulations vs. Experiment, edited by Farkas, D., Kung, H., Mayo, M., Van Swygenhoven, H., and Weertman, J. (Mater. Res. Soc. Symp. Proc. 634, Warrendale, PA, 2001), p. B1.10.1.Google Scholar
6.Jin, H.J., Zhou, F., Wang, L.B. and Lu, K.: Effect of plastic deformation on thermal stability in metallic glasses. Scripta Mater. 44, 1083 (2001).CrossRefGoogle Scholar
7.Kim, Y.H., Choi, G.S., Kim, I.G. and Inoue, A.: High-temperature mechanical properties and structural change in amorphous Al-Ni-Fe-Nd alloys. Mater. Trans. JIM 37, 1471 (1996).CrossRefGoogle Scholar
8.Gao, M.C., Hackenberg, R.E. and Shiflet, G.J.: Deformation-induced nanocrystal precipitation in Al-base metallic glasses. Mater. Trans. JIM 42, 1741 (2001).CrossRefGoogle Scholar
9.Kim, J.J., Choi, Y., Suresh, S. and Argon, A.S.: Nanocrystallization during nanoindentation of a bulk amorphous metal alloy at room temperature. Science 295, 654 (2002).CrossRefGoogle ScholarPubMed
10.Jiang, W.H., Pinkerton, F.E. and Atzmon, M.: Effect of strain rate on the formation of nanocrystallites in an Al-based amorphous alloy during nanoindentation. J. Appl. Phys. 93, 9287 (2003).CrossRefGoogle Scholar
11.Csontos, A.A. and Shiflet, G.J.: Formation and chemistry of nanocrystalline phase formed during deformation in aluminum-rich metallic glasses. Scripta Mater. 9, 281 (1997).Google Scholar
12.Jiang, W.H. and Atzmon, M.: The effect of compression and tension on shear-band structure and nanocrystallization in amorphous Al90Fe5Gd5: A high-resolution transmission-electron-microscopy study. Acta Mater. 51, 4095 (2003).CrossRefGoogle Scholar
13.Miller, D.P. and Gibson, J.M.: Connecting small-angle diffraction with real-space images by quantitative transmission electron microscopy of amorphous thin-films. Ultramicroscopy 74, 221 (1998).CrossRefGoogle Scholar
14.Li, J., Wang, Z.L. and Hufnagel, T.C.: Characterization of nanometer-scale defects in metallic glasses by quantitative high-resolution transmission electron microscopy. Phys. Rev. B 65, 144201 (2002).CrossRefGoogle Scholar
15.Pampillo, C.A.: Localized shear deformation in a glassy metal. Scripta Metall. 6, 915 (1972).CrossRefGoogle Scholar
16.Pearson, W.B.: A Handbook of Lattice Spacing and Structures of Metals and Alloys (Pergamon Press, London, U.K., 1958), p. 124.Google Scholar
17.Donovan, P.E. and Stobbs, W.M.: The structure of shear bands in metallic glasses. Acta Metall. 29, 1419 (1981).CrossRefGoogle Scholar
18.Hajlaoui, K., Benameur, T., Vaughan, G. and Yavari, A.R.: Thermal expansion and indentation-induced free volume in Zr-based metallic glasses measured by real-time diffraction using synchrotron radiation. Scripta Mater. 51, 843 (2004).CrossRefGoogle Scholar
19.Kanungo, B.P., Glade, S.C., Asoka-Kumar, P. and Flores, K.M.: Characterization of free volume changes associated with shear band formation in Zr- and Cu-based bulk metallic glasses. Intermetallics 12, 1073 (2004).CrossRefGoogle Scholar
20.Daniel, B.S. Sundar, Heilmaier, M., Bartusch, B., Kanzow, J., Günther-Schade, K., Rätzke, K., Eckert, J., and Faupel, F.: Free volume evolution in bulk metallic glass during high temperature creep, in Supercooled Liquids, Glass Transition and Bulk Metallic Glasses, edited by Egami, T., Greer, A.L., Inoue, A., and Ranganathan, S. (Mater. Res. Soc. Symp. Proc. 754, Warrendale, PA 2003), p. 293.Google Scholar
21.Steif, P.S., Spaepen, F. and Hutchinson, J.W.: Strain localization in amorphous metals. Acta Metall. 30, 447 (1982).CrossRefGoogle Scholar
22.Argon, A.S.: Plastic deformation in metallic glasses. Acta Metall. 27, 47 (1979).CrossRefGoogle Scholar
23.Wang, J.G., Choi, B.W., Nieh, T.G. and Liu, C.T.: Crystallization and nanoindentation behavior of a bulk Zr-Al-Ti-Cu-Ni amorphous alloy. J. Mater. Res. 15, 798 (2000).CrossRefGoogle Scholar