Hostname: page-component-cd9895bd7-jkksz Total loading time: 0 Render date: 2024-12-23T13:13:09.113Z Has data issue: false hasContentIssue false
  • English
  • Français

A comparison of the sintering characteristics of ball-milled and attritor-milled W–Ni–Fe heavy alloy

Published online by Cambridge University Press:  31 January 2011

M. L. Öveçoğlu ,
B. Özkal  and
C. Suryanarayana
M. L. Öveçoğlu
Affiliation:
Faculty of Chemistry-Metallurgy, Department of Metallurgical Engineering, Technical University of Istanbul, Maslak, Istanbul 80626, Turkey
B. Özkal
Affiliation:
Faculty of Chemistry-Metallurgy, Department of Metallurgical Engineering, Technical University of Istanbul, Maslak, Istanbul 80626, Turkey
C. Suryanarayana
Affiliation:
Institute for Materials and Advanced Processes, University of Idaho, Moscow, Idaho 83844–3026
Get access

Abstract

Blended elemental W–7 wt.%Ni–3 wt. %Fe powders were mechanically alloyed in a planetary ball mill and a heavy duty attritor. The structural and morphological characteristics of the as-milled powders were characterized by x-ray diffraction and electron microscopy techniques. A ternary solid solution of Fe and Ni in W formed in both the cases; the amount of Ni and Fe dissolved is higher in the attritor-milled powder than in the ball-milled powder. Morphologically, the W-rich particles in the attritor-milled powders were spheroidal, smaller in size, and showed a narrower size distribution than in the ball-milled condition. These differences led to increased density in the attritor-milled powder compact and significant differences in chemical composition of the matrix region and W-rich grains. Transmission electron microscopy investigations of the matrix region in the compacts revealed the presence of Fe2W precipitates uniformly distributed in an Ni(Fe, W) matrix.

Type
Articles
Information
Journal of Materials Research , Volume 11 , Issue 7 , July 1996 , pp. 1673 - 1682
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.Belhadjhamida, A. and German, R.M., Tungsten and Tungsten Alloys, Recent Advances, edited by Crowson, A. and Cohen, E. S. (TMS, Warrendale, PA, 1991), p. 3.Google Scholar
2.German, R. M., Liquid Phase Sintering (Plenum Press, New York, 1985), p. 228.CrossRefGoogle Scholar
3.Edmonds, D. V., Solid State Phenomena 8–9, 193 (1989).Google Scholar
4.Kuzmick, J. F., Modern Developments in Powder Metallurgy, edited by Hausner, H. H. (Plenum Press, New York, 1966), Vol. 3, p. 166.CrossRefGoogle Scholar
5.Wei, T. S. and German, R. M., Int. J. Powder Metall. 24, 327 (1988).Google Scholar
6.German, R. M. and Churn, K. S., Metall. Trans. A 15A, 747 (1984).CrossRefGoogle Scholar
7.Rabin, B. H., Bose, A., and German, R. M., Int. J. Powder Metall. 25, 21 (1989).Google Scholar
8.Yoon, D. N. and Huppmann, W. J., Acta Metall. 27, 973 (1979).CrossRefGoogle Scholar
9.Noh, J-W., Hong, M-H., Kim, G-H., Kang, S-J.L., and Yoon, D.Y., Metall. Trans. A 25A, 2828 (1994).CrossRefGoogle Scholar
10.Muddle, B. C. and Edmonds, D. V., Acta Metall. 33, 2119 (1985).CrossRefGoogle Scholar
11.Lea, C., Muddle, B. C., and Edmonds, D. V., Metall. Trans. A 14A, 667 (1983).CrossRefGoogle Scholar
12.Kang, T.-K. and Yoon, D. N., Metall. Trans. A 9A, 433 (1978).CrossRefGoogle Scholar
13.Muddle, B. C., Metall. Trans. A 15A, 1089 (1984).CrossRefGoogle Scholar
14.Yoon, D. N. and Huppmann, W. J., Acta Metall. 27, 693 (1979).CrossRefGoogle Scholar
15.Williams, D. J., Cleyns, S., and Johnson, W., Powder Metall. 23, 92 (1980).CrossRefGoogle Scholar
16.Price, G. H. S., Smithells, C. S., and Williams, S. V., J. Inst. Metals, 239 (1938).Google Scholar
17.Froschauer, L. and Fulrath, R. M., J. Mater. Sci. 10, 2146 (1975).CrossRefGoogle Scholar
18.Huppmann, W. J., Rieger, H., Kaysser, W. A., Smolej, V., and Pejovnik, S., Metall, Z.. 70, 707 (1979).Google Scholar
19.German, R. M., Powder Metallurgy Science, 2nd ed. (Metal Powder Industries Federation, Princeton, NJ, 1994), p. 279.Google Scholar
20.Raynor, G. V. and Rivlin, V. G., Int. Met. Rev. 28, 124 (1983).Google Scholar
21.Raynor, G. V. and Rivlin, V. G., Int. MET. Rev. 26, 213 (1981).CrossRefGoogle Scholar
22.Binary Alloy Phase Diagrams, 2nd ed., edited by Massalski, T. B., Okamoto, H., Subramanian, P. R., and Kacprzak, L. (ASM INTERNATIONAL, Materials Park, OH, 1990).Google Scholar
23.Sulan, T., Dissertation, M. S., Technical University of Istanbul, Istanbul, Turkey (1993).Google Scholar
24.Ernas, G., Dissertation, M. S., Technical University of Istanbul, Istanbul, Turkey (1993).Google Scholar
25.Özkal, B., Dissertation, M. S., Technical University of Istanbul, Istanbul, Turkey (1994).Google Scholar
26.Ivanov, E.Mater. Sci. Forum 88–90 475 (1992).CrossRefGoogle Scholar
27.Koch, C. C., Mater. Sci. Forum 88–90, 243 (1992).CrossRefGoogle Scholar
28.Suryanarayana, C., Int. Mater. Rev. 40, 41 (1995).CrossRefGoogle Scholar
29.German, R. M. and Munir, Z. A., Rev. Met. Phys. Ceram. 2, 9 (1982).Google Scholar