Abstract
The mechanism of iron and aluminum intermetallics formation in the reactive sintering of iron and aluminum mixing powders has been studied by investigating iron-aluminum diffusion couples. The couples were treated at 600°C, 700°C, 800°C, 900°C and 1000°C respectively. It was found that an Al-rich intermetallics FeAl3 has formed in iron adjacent to the interface of iron and aluminum by aluminum diffusion into iron at 600°C (below the eutectic temperature), and that in the case above 700°C (above the eutectic temperature) there was a liquid, an intermetallics Fe2Al5 has formed in both side of the interface. The diffusion of iron and aluminum atoms is companied with the Fe-Al reaction during the treatment under the both conditions. The diffusion coefficients of iron and aluminum and the activation energy were determined. The mechanism of the intermetallics formation in the couples is also discussed.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Mckamey C. G. and Horton J. A., The effect of molybdenum addition on properties of iron aluminides, Metallurgical Transaction A, 20A:751 (1989)
Mckamey C. G., Maziasz P. J., Goodwin G. M., et al., Effects of alloying additions on the microstructures, mechanical properties and weldability of Fe2Al-based alloys, Materials Science and Engineering A-Structural Materials Properties, Microstructure and Processing, 174: 59–70 (1994)
Wang X. and Wood J. V., Role of nickel in Fe3Al intermetallic compound formation, Powder Metallurgy, 38(1): 59 (1995)
Bordeau R. G., Development of Iron Aluminides, AFWAL-TR-87-4009 (Air force Wright Aeronautical Laboratories, Wright-Patterson Air Force Base, OH May 1987)
Knibloe J. R., Wright R. N. and Sikka V. K., 1990 Advances in Powder Metallurgy, Metal Powder Industries Federation, Princeton, NJ, 2:219 (1990)
Sikka V. K., Baldwin R. H., Howell C. R., et al., Powder production, processing and properties of Fe3Al, 1990 Advances in Powder Metallurgy, Metal Powder Industries Federation, Princeton, NJ 2 (1990)
Knibloe J. R., Wright R. N., Sikka V. K., et al., Elevated-temperature behavior of Fe3Al with chromium additions, Materials Science and Engineering A-Structural Materials Properties, Microstructure and Processing, 153(1–2):382–386 (1992)
Prakash U., Buckley R. A. and Jones H., Formation of B2 antiphase domains in rapid solidified Fe-Al alloys, Philos. Mag., 1991:213
Sheasby J. S., Powder metallurgy of lron-aluminum, Int. J. Powder Metall. Powder Technol., 21(4):301 (1979)
Lee D. J. and German R. M., Sintering behaviour of iron-aluminum powder mixes, Int. J. Powder Metall. Powder Technol., 21(1):9 (1985)
Rabin B. H. and Wright R. N., Synthesis of iron aluminides from elemental powders: rection mechanisms and densification behavior, Metallurgical Transaction A, 22A (2):277 (1991)
Wang X. and Wood J., Influence of nickel on reactive sintering of Fe3Al intermetallic compound, Powder Metallurgy, 36(3):187 (1993)
Zhuang L. Z., Buekenhout L. and Duszczyk J., Reaction phase-forming and mechanical properties of Fe3Al produced from elemental powders, Scripta Metallurgica Et Materialia, 30(7):909–914 (1994)
Massalski T. B., Binary Alloy Phase Diagrams, ASM, Metals Park, OH, 1986:111
Giles F. Carter, Principles of Physical and Chemical Metallurgy, ASM, Metals Park, OH, 1979:282
Author information
Authors and Affiliations
About this article
Cite this article
Wang, X., Wood, J.V., Sui, Y. et al. Formation of intermetallic compound in iron-aluminum alloys. J. of Shanghai Univ. 2, 305–310 (1998). https://doi.org/10.1007/s11741-998-0045-5
Received:
Issue Date:
DOI: https://doi.org/10.1007/s11741-998-0045-5