Hostname: page-component-7c8c6479df-995ml Total loading time: 0 Render date: 2024-03-28T19:45:35.953Z Has data issue: false hasContentIssue false

Fully dense Al–Pb nanocomposite bulk samples consolidated from mechanically milled powders

Published online by Cambridge University Press:  31 January 2011

F. Zhou
Affiliation:
State Key Laboratory of RSA, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, People's Republic of China
H. W. Sheng
Affiliation:
State Key Laboratory of RSA, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, People's Republic of China
K. Lu
Affiliation:
State Key Laboratory of RSA, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, People's Republic of China
Get access

Extract

Powders with a nanostructured mixture of pure Al and Pb phase were produced by mechanical milling of elemental blends of Al and Pb with a composition of Al90Pb10 (wt. %). Under a pressure of 1.5 GPa at 280 °C, the as-milled powders were successfully consolidated into bulk, full-density samples (>99.5% theoretical density) while the average grain sizes of Al and Pb in the compacted samples remain unchanged with respect to those in the as-milled powders. The achievement of the full density without grain coarsening in the consolidation process could be reasonably attributed to melting of the nanometer-sized Pb particles of which the melting point is considerably depressed.

Type
Articles
Copyright
Copyright © Materials Research Society 1998

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.Nieman, G.W., Weertman, J. R., and Siegel, R.W., J. Mater. Res. 6, 1012 (1991).CrossRefGoogle Scholar
2.Siegel, R.W. and Fougere, G. E., in Nanophase Materials: Synthesis-Properties-Applications, edited by Hadjipanayis, G. C. and Siegel, R.W. (Kluwer, Dordrecht, 1994), p. 233.CrossRefGoogle Scholar
3.Lu, K., Mater. Sci. Eng. Rep. 16, 161 (1996).CrossRefGoogle Scholar
4.Erb, U., El-Sherik, A.M., Palumbo, G., and Aust, K. T., Nanostruc. Mater. 2, 383 (1993).CrossRefGoogle Scholar
5.Valiev, R. Z., Korznikov, A.V., and Mulyukov, R. P., Mater. Sci. Eng. A168, 141 (1993).CrossRefGoogle Scholar
6.Jain, M. and Christman, T., Acta Metall. 42, 1901 (1994).CrossRefGoogle Scholar
7.Morris, D.A. and Morris, M.A., Acta Metall. Mater. 39, 1763 (1991).CrossRefGoogle Scholar
8.Oehring, M., Appel, F., Pfullmann, Th., and Bormann, R., Appl. Phys. Lett. 66, 941 (1995).Google Scholar
9.Suryanarayana, C., Korth, G. E., and Froes, F.H., in Processing and Properties of Nanocrystalline Materials, edited by Suryanarayana, C., Singh, J., and Froes, F.H. (The Minerals, Metals & Materials Society, Warrendale, PA, 1996), p. 291.Google Scholar
10.Suryanarayanan, R., Frey, C.A., and Sastry, S.M. L., J. Mater. Res. 11, 439 (1996).CrossRefGoogle Scholar
11.He, L. and Ma, E., J. Mater. Res. 11, 72 (1996).CrossRefGoogle Scholar
12.Kumar, K.N. P., Keizer, K., Burggraaf, A. J., Okubo, T., Nagamoto, H., and Morooka, S., Nature (London) 358, 48 (1992).CrossRefGoogle Scholar
13.Sheng, H.W., Ren, G., Peng, L.M., Hu, Z.H., and Lu, K., Philos. Mag. Lett. 73, 179 (1996).CrossRefGoogle Scholar
14.Sheng, H.W., Zhou, F., Hu, Z.Q., and Lu, K., J. Mater. Res. 13, 308 (1998).Google Scholar
15.Nath, D., Bolla, R., and Chandra, S., PowderMet. Int. 24, 84 (1992).Google Scholar
16.Sheng, H.W., Hu, Z.Q., and Lu, K., Nanostruc. Mater. 9 661 (1997); Sheng, H.W., Ren, G., Peng, L.M., Hu, Z.Q., and Lu, K. (unpublished).CrossRefGoogle Scholar