Hostname: page-component-cd9895bd7-jn8rn Total loading time: 0 Render date: 2024-12-28T16:27:24.342Z Has data issue: false hasContentIssue false
  • English
  • Français

Principle of dynamic decompression and cooling for materials processing

Published online by Cambridge University Press:  31 January 2011

Robert E. Apfel  and
Ning Qiu
Robert E. Apfel
Affiliation:
Department of Mechanical Engineering, Yale University, New Haven, Connecticut 06520–8286
Ning Qiu
Affiliation:
Department of Mechanical Engineering, Yale University, New Haven, Connecticut 06520–8286
Get access

Abstract

When a melt seeded with droplets of a volatile liquid is rapidly decompressed, the droplets explosively vaporize, taking their latent heat of vaporization from the melt and, therefore, homogeneously cooling and expanding it. The possibility of using this dynamic decompression and cooling (DDC) technique for producing an amorphous metallic foam is theoretically investigated. To test the premises of this theoretical model, preliminary experiments with an organic melt (p-terphenyl) seeded with water drops were performed. Results of these experiments demonstrate the potential of this novel approach to materials processing.

Type
Articles
Information
Journal of Materials Research , Volume 11 , Issue 11 , November 1996 , pp. 2916 - 2920
Copyright
Copyright © Materials Research Society 1996

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.Klement, J. W., Willen, R. H., and Duwez, P., Nature (London) 187, 869 (1960).CrossRefGoogle Scholar
2.Duwez, P., Trans. Met. Soc. AIME 60, 605 (1967).Google Scholar
3.Takayama, S., J. Mater. Sci. 11, 164 (1976).CrossRefGoogle Scholar
4.Spaepen, F. and Turnbull, D., Ann. Rev. Phys. Chem. 35, 241 (1984).CrossRefGoogle Scholar
5.Bennet, M. R. and Wright, J. G., Phys. Status Solidi A 13, 135 (1972).CrossRefGoogle Scholar
6.Shimada, Y. and Kojima, H., J. Appl. Phys. 50, 1541 (1979).CrossRefGoogle Scholar
7.Shimada, Y. and Kojima, H., J. Appl. Phys. 53, 3156 (1982).CrossRefGoogle Scholar
8.Ali, A., Grant, W. A., and Grundy, J. P., Philos. Mag. B 37, 353 (1978).CrossRefGoogle Scholar
9.Johnson, W. L., Mater. Sci. Eng. 97, 1 (1988).CrossRefGoogle Scholar
10.Schultz, L., Mater. Sci. Eng. 97, 15 (1988).CrossRefGoogle Scholar
11.Schwarz, R. B., Mater. Sci. Eng. 97, 71 (1988).CrossRefGoogle Scholar
12.Apfel, R. E., U.S. Patent No. 5 384 203, issued on January 24, 1995.Google Scholar
13.Spaepen, F., in Phase Transitions in Condensed Systems— Experiments and Theory Festschrift in Honor of David Turnbull, edited by Cargill, G. S. III, Spaepen, F., and Tu, K-N. (Mater. Res. Soc. Symp. Proc. 57, Pittsburgh, PA, 1987), pp. 161–184.Google Scholar
14.Turnbull, D., in Amorphous Metals and Semiconductors, edited by Hansen, and Jaffee, (Acta Scripta Metallurgica Proceedings, 1986), Vol. 3, pp. 9–19.CrossRefGoogle Scholar
15.Qiu, N. and Apfel, R. E., Rev. Sci. Instrum. 66, 3337–3343 (1995).CrossRefGoogle Scholar
16.Rayleigh, , (Strutt, J. W.), Philos. Mag. 34, 94–98 (1917).CrossRefGoogle Scholar
17. Suggestions for alloys and blowing materials made by David Turnbull, private communication.Google Scholar