Abstract
Nanocrystalline metal powders synthesized by mechanical alloying in a ball mill resulted in micron-sized powder particles with a nanosized (5 to 25 nm) substructure. Conventional consolidation methods resulted in considerable coarsening of the metastable nanometer crystallites, but dynamic consolidation of these powders using explosive techniques produced fully dense monoliths while retaining the 5- to 25-nm substructure. Numerical modeling, used to guide the experimental phase, revealed that the compression wave necessary for suitable consolidation was of the order of 10 GPa for a few tenths of a microsecond. The consolidation process is described, and the retention of the metastable nanostructure is illustrated.
Similar content being viewed by others
References
H. Gleiter:Prog. Mater. Sci., 1989, vol. 33, pp. 223–315.
R. Birringer:Mater. Sci. Eng. A, 1989, vol. 117, pp. 33–43.
R.W. Siegel:Mater. Sci. Forum, 1989, vol. 37, pp. 299–309.
H.J. Fecht, E. Hellstern, Z. Fu, and W.L. Johnson:Metall. Trans. A, 1990, vol. 21A (9), pp. 2333–37.
M.A. Morris and D.G. Morris:Clusters and Cluster Assembled Materials, R.S. Averback, J. Bernhole, and D.L. Nelson, eds., Materials Research Society, 1991, vol. 206, pp. 499-504.
M. Oehring and R. Bormann:Mater. Sci. Eng. A, 1991, vol. 134, pp. 1330–31.
C. Suryanarayana, G.E. Korth, G.-H. Chen, A. Frefer, and F.H. Froes:Nanostructured Materials, 1993, vol. 2, pp. 527–35.
W.H. Gourdin:Prog. Mater. Sci., 1986, vol. 30, pp. 39–80.
M. Jain and T. Christman:Acta Metall. Mater., 1994, vol. 42 (6), pp. 1901–911.
C. Suryanarayana and F.H. Froes:Mater. Sci. Eng., vols. 179-180, part A, 1994, pp. 108-111.
J.C. Rawers, R.C. Doan, G. Slavens, D. Govier, and J. Siple:J. Mater. Syn. Process., 1993, vol. 1 (2), pp. 75–84.
C.P. Dogan, J.C. Rawers, R.D. Govier, and G. Korth:Nanostruct. Mater., 1994, vol. 4 (6), pp. 631–44.
B.H. Rabin, G.E. Korth, and R.L. Williamson:Metal & Ceramic Matrix Composites: Processing, Modeling & Mechanical Behavior, R.B. Bhagat, A.H. Clauer, P. Kumar, and A.M. Ritter, ed. TMS, Warrendale, PA, 1990, pp. 281–92.
W. Herrmann:J. Appl. Phys., 1969, vol. 40, pp. 2490–499.
S.L. Thompson and H.S. Lauson: Sandia National Laboratories Report No. SC-RR-710714, Sandia National Laboratories, Albuquerque, NM, 1972.
G.E. Jones, J.E. Kennedy, and L.D. Bertholf:Am. J. Phys., 1980, vol. 48 (4), pp. 264–69.
M.A. Meyers and S.L. Wang:Acta Metall. Mater., 1988, vol. 36 (4), pp. 925–36.
R.L. Williamson and R.A. Berry:Shock Waves in Condensed Matter, Y.M. Gupta, Plenum, New York, NY, 1986, pp. 341–46.
J.E. Flinn, R.L. Williamson, R.A. Berry, R.N. Wright, and Y.M. Gupta:J. Appl. Phys., 1988, vol. 64 (3), pp. 1446–56.
R.L. Williamson, R.N. Wright, G.E. Korth, and B.H. Rabin:J. Appl. Phys., 1989, vol. 66 (4), pp. 1826–31.
C. Suryanarayana: University of Idaho, Moscow, ID, private communication, May 1994.
Author information
Authors and Affiliations
Additional information
This article is based on a presentation made in the symposium “Dynamic Behavior of Materials,” presented at the 1994 Fall Meeting of TMS/ASM in Rosemont, Illinois, October 3-5, 1994, under the auspices of the TMS-SMD Mechanical Metallurgy Committee and the ASM-MSD Flow and Fracture Committee.
Rights and permissions
About this article
Cite this article
Korth, G.E., Williamson, R.L. Dynamic consolidation of metastable nanocrystalline powders. Metall Mater Trans A 26, 2571–2578 (1995). https://doi.org/10.1007/BF02669415
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF02669415