Hostname: page-component-76fb5796d-22dnz Total loading time: 0 Render date: 2024-04-29T21:14:42.124Z Has data issue: false hasContentIssue false
  • English
  • Français

Nucleation and growth in surface-melted crystalline and amorphous Fe40Ni40P14B6 alloys

Published online by Cambridge University Press:  03 March 2011

R. J. Wallace  and
E. N. Kaufmann
R. J. Wallace
Affiliation:
University of California, Lawrence Livermore National Laboratory, Livermore, California 94550
E. N. Kaufmann
Affiliation:
University of California, Lawrence Livermore National Laboratory, Livermore, California 94550
Get access

Abstract

The well-known glass-forming alloy Fe40Ni40P14B6 was surface melted by an electron beam traversing its surface at various velocities in an identical manner for both the crystalline and the amorphous state of the alloy. Cross-sectional optical metallography and numerical heat-flow analysis were used to show that (1) crystallization of the amorphous state does not occur during treatment around or in the regrown layer at the highest processing speeds, a behavior consistent with an extrapolation of isothermal nucleation and growth measurements; (2) initial resolidification of the molten layer is always crystalline when the melt pool contacts underlying crystalline material where nucleation is immediate; and (3) solidification front velocities greater than 5 ± 0. 5 cm/s exceed the maximum kinetic limit for growth of the crystalline phase and amorphous layers are formed, a result consistent with the eutectic nature of the alloy. Inconsistencies with the work of previous investigators of this system are discussed.

Type
Articles
Information
Journal of Materials Research , Volume 1 , Issue 1 , February 1986 , pp. 27 - 37
Copyright
Copyright © Materials Research Society 1986

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

1Flanders, P. J., Graham, C. D., and Egami, T., IEEE Magnetism 11, 1323 (1975).CrossRefGoogle Scholar
2Leamy, H. J., Chen, H. S., and Wang, T. T., Metall. Trans. 3, 699 (1972).Google Scholar
3Naka, M., Hashimoto, K., and Masumoto, T., J. Japan Inst. Metals 38, 835 (1974).Google Scholar
4Suryanarayana, C., Rapidly Quenched Metals-a Bibliography 1973–1979 (Plenum, New York, 1980).CrossRefGoogle Scholar
5Liebermann, H. H., Amorphous Metallic Alloys, edited by Luborsky, F. E. (Butterworth, New York, 1983), p. 26.CrossRefGoogle Scholar
6Breinan, E. M. and Kear, B. H., Laser Materials Processing, edited by Bass, M. (North-Holland, New York, 1983), p. 235.Google Scholar
7Cahn, R. W., Contemp. Phys. 21, 43 (1980).Google Scholar
8Luborsky, F. E., Mater. Sci. Eng. 28, 139 (1977).CrossRefGoogle Scholar
9Pratten, N. A. and Scott, M. G., Scr. Metall. 12, 137 (1978).CrossRefGoogle Scholar
10Scott, M. G., J. Mater. Sci. 13, 291 (1978).CrossRefGoogle Scholar
11Watanabe, T. and Scott, M. G., J. Mater. Sci. 15, 1131 (1980).CrossRefGoogle Scholar
12Tiwari, R. S., Ranganathan, S., and Heimendahl, M. V., Z. Metallkd. 72, 563 (1981).Google Scholar
13Allied Corporation Metglas 2826 Data Sheet, Allied Corporation, Morristown, NJ, 1978.Google Scholar
14Koster, U. and Herold, U., Scr. Metall. 12, 75 (1978).CrossRefGoogle Scholar
15Mason, W. E. Jr., TACO2D-A Finite Element Heat Transfer Code (University of California, Lawrence Livermore National Laboratory, 1982), Report. No. UCID-17980, Rev. 2.Google Scholar
16Becker, R., Sepold, G., and L.Ryder, P., Scr. Metall. 14, 1283 (1980).CrossRefGoogle Scholar
17Boettinger, W. J., Rapidly Solidified Amorphous and Crystalline Alloys, edited by Kear, B. H., Giessen, B. C., and Cohen, M. (Elsevier, New York, 1982), p. 15.Google Scholar
18Walter, J. L., Rac, P., Koch, E., and Bartran, S. F., Met. Trans. A 8, 1141 (1977).CrossRefGoogle Scholar
19Kaufmann, E. N., Wallace, R. J., Mahin, K. W., Echer, C. J., Huegel, F. J., and Draper, C. W., Amorphous Metals and Non-equilibrium Processing, edited by Von Allmen, M. (Les Editions de Physique, Les Ulis, France, 1985), p. 59.Google Scholar
20Koster, U. and Herold, U., Glassy Metals I, edited by Gontherodt, H. J. and Beck, H. (Springer, New York, 1981), p. 225.CrossRefGoogle Scholar
21Morris, D. G., Acta Metall. 29, 1213 (1981).Google Scholar
22Davies, H. A., Rapidly Quenched Metals, III, edited by Cantor, B. (Metals Society, London, 1978), p. 1.Google Scholar
23Jain, A. K., Sood, D. K., Battaglin, G., Camera, A., Delia Mea, G., Kulkarni, V. N., Mazzoldi, P., and Nandedkar, R. V., Laser-Solid Interactions and Transient Thermal Processing of Materials, edited by Narayan, J., Brown, W. L., and Lemons, R. A. (Elsevier, New York, 1983), p. 703.Google Scholar