Skip to main content Accessibility help
×
Home

Grain Boundary Diffusivity Measurement Through Kinetic Analysis Of Discontinuous Precipitation

  • I. Manna (a1), J. N. Jha (a1), S. K. Pabi (a1) and W. Gust (a2)

Abstract

Discontinuous precipitation involves formation of a two phase aggregate from a supersaturated solid solution behind a migrating boundary. It is established that the solute transport occurs primarily through the migrating boundary, called the reaction front. This report presents a systematic study of discontinuous precipitation in a Zn-Ag alloy and measurement of grain boundary chemical diffusivity of Ag in Zn-Ag using a suitable analytical model for the first time. The necessary kinetic parameters were determined by optical and scanning electron microscopes. The activation energy for boundary chemical diffusion of Ag in Zn-Ag has been estimated to be 65.8 kJ/mol.

Copyright

References

Hide All
1. Williams, D.B. and Butler, E.P., Inter. Met. Rev. 26. 153 (1981).
2. Gust, W., in Phase Transformations. Series 3, No.11, Vol.1, edited by The Inst. of Metallurgists, (The Chameleon Press, London, 1979) pp. 11/27.
3. Friesel, M., Manna, I. and Gust, W., Colloque de Physique 51, Cl381 (1990).
4. Watanabe, R. and Koda, S., Nippon Kinzoku Gakkai-si (in Japanese) 21, 290 (1957).
5. Lucke, K., Z.Metalik. 52. 1 (1961).
6. Manna, I. and Pabi, S. K., J. Mater. Sci. Lett. 9, 854 (1990).
7. Bogel, A. and Gust, W., Z. Metalik. 79 296 (1988).
8. Manna, I., Gust, W. and Predel, B., Ser. Metall. 24, 1635(1990).
9. Murr, L. E., Interfacial Phenomena in Metals and Alloys (Addison-Wesley, London, 1975), p. 133.
10. Petermann, J. and Hornbogen, E., Z.Metalik. 59. 814 (1968).
11. Rosolowski, J.H., Phy. Rev. 124, 1828 (1961).
12. Bergner, D. and Lange, W., Phy. Stat. Solidi 18, 75 (1966).

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed