Skip to main content Accessibility help
×
Home

The Effects of Processing Variables on Reaction Synthesis of Fe-A1 Alloys

  • D. L. Joslin (a1), D. S. Easton (a1), C. T. Liu (a1) and S. A. David (a1)

Abstract

The effects of alloy composition and reaction atmosphere on reaction synthesis of binary Fe-Al alloys were studied. Reactions were observed in an open (air) furnace, under static vacuum (in an evacuated quartz tube) and in a dynamic vacuum furnace. High-speed videotapes of reaction syntheses of compacts formed from 45-μm Fe and 10-μm Al powders reacted in air and under static vacuum revealed that an unusual “two-stage” reaction exists in this system under these conditions. The first stage of the two-stage reaction lasts several seconds and starts at around 650°C. The second stage begins at about 900°C, reaching temperatures between 1250 and 1350°C. The progress of the reaction to the second stage is sensitive to the alloy composition and reaction environment. The reaction behavior is explained in terms of thermodynamics and heat transfer, which control the delicate balance between heat accumulation and heat loss during reaction synthesis.

Copyright

References

Hide All
1. McKamey, C.G., Devan, J.H., Tortorelli, P.F., and Sikka, V.K., J. Mater. Res. 6, 1779 (1991).
2. Liu, C.T. and Kumar, K.S., JOM 45 (5), 38 (1993).
3. Lee, D.J. and German, R.M., Int. J. Powder Metall. Powder Technol. 21 (12), 9 (1985).
4. Rabin, B.H. and Wright, R.N., Metall. Trans. A 22, 277 (1991).
5. Rabin, B.H. and Wright, R.N., Metall. Trans. A 23, 35 (1992).
6. Rabin, B.H., Wright, R.N., Knibloe, J.R., Raman, R.V., and Rale, S.V., Mater. Sci. Engng. A153, 706 (1992).
7. Zhuang, L.Z., Buekenhout, L., and Duszcyzyk, J., Scripta Metall. Mater. 30 (7), 909 (1994).
8. Nishimura, C. and Liu, C.T., Acta Metall. Mater. 41 (1), 113 (1993).
9. Miura, S. and Liu, C. T., Intermetallics, (1994) (in press).
10. Joslin, D.L., Easton, D.S., Liu, C.T., and David, S.A., J. Mater. Sci. and Eingng. (in press).
11. Fricke, H.D. in Metals Handbook. 9th ed., vol. 6, (American Society For Metals, Metals Park, OH 1978), pp. 692704.
12. Kubaschewski, O., Alcock, C.B., and Spencer, P.J., Materials Thermochemistry. 6th. ed., (Pergamon, New York 1993), pp. 163171.
13. Yi, H.C. and Moore, J.J., J. Mater.Sci. 25, 1150 (1990).
14. Eslamloo-Grami, M. and Munir, Z. A., J. Mater. Res. 9 (2), 431 (1994).
15. Wright, R.N., Rabin, B.H., and McFerran, W.H., J. Mater. Res. 7 (10), 2736 (1992).
16. Yi, H.C., and Moore, J.J., J. Mater. Sci. 27, 5067 (1992).
17. Miura, S. and Liu, C.T., Intermetallics 2, 297 (1994).
18. Sundman, B., Jansson, B., and Andersson, J.O., Calphad 9, 153 (1985).

The Effects of Processing Variables on Reaction Synthesis of Fe-A1 Alloys

  • D. L. Joslin (a1), D. S. Easton (a1), C. T. Liu (a1) and S. A. David (a1)

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