Expansion Behavior of Iron-Copper Compact from (FeCu) Pre-Alloyed Powder


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Dilatometric curves of iron-copper compact made from elemental or pre-alloyed powder were compared in order to study its expansion mechanism. The compacts from a mixture of elemental iron and copper powders showed the maximum expansion at the copper powder content of 7.44mass% and at the sintering temperatures above the copper melting-point. In the case of the compacts from a mixture of iron pre-alloyed powder of (Fe- 3.44mass%Cu) and copper powder, the maximum expansion which is lower than the former case was obtained at the additive copper powder content of 4.00mass%. But the compact from a mixture of iron pre-alloyed powder of (Fe-7.18mass%Cu) and copper powder showed only shrinkages at any additive copper powder content. The penetration of liquid copper into the interstices between solid grains was observed in all sintered compacts. The iron-copper compacts containing the same content of copper powder showed a very different expansion behavior depending on the amount of copper content in the starting iron raw powder.



Materials Science Forum (Volumes 534-536)

Edited by:

Duk Yong Yoon, Suk-Joong L. Kang, Kwang Yong Eun and Yong-Seog Kim




Y. C. Kim and M. J. Suk, "Expansion Behavior of Iron-Copper Compact from (FeCu) Pre-Alloyed Powder", Materials Science Forum, Vols. 534-536, pp. 517-520, 2007

Online since:

January 2007




[1] H. Mitani and K. Nishigaki : On Abnormal Expansion in Mixed Compacts of the Fe-Cu Binary System during Sintering, Journal of the Japan Institute of Metals, 32(1968) 478~482.

[2] T. Watanabe and M. Kawaguchi : Growing Phenomena of Iron-Copper Compacts during Sintering Process, Transactions of the Casting Research Laboratory Waseda Univ., 27(1973) 65~75.

[3] K. Tabcshfar and D. A. Chadwick : Dimensional Changes during Liquid Phase Sintering of FeCu Compacts, Powder Metal., 27(1984) 19~24.

[4] H. Fredriksson, K. Hansson and A, Olsson : On the Mechanism of Liquid Copper Penetration into Iron Grain Boundaries, Scand. J. Metal. Int., 30(2001) 41~50.

DOI: 10.1034/j.1600-0692.2001.300106.x

[5] F. V. Lenel, T. Pecanha : Observations on the Sintering of Compacts from a mixture of Iron and Copper Powders, Powder Metal. Int., 16(1973) 351~365.

DOI: 10.1179/pom.1973.16.32.011

[6] Y. C. Kim and Shoji Goto : The Effect of Cu Addition Method on Dimensional Change of FeCu Sintered Compacts, Journal of Japan Society of Powder and Powder Metallurgy, 52(2005) 89~96.

DOI: 10.2497/jjspm.52.89

[7] Tokyotenmondai : Rikanenpyo, Maruzen, (1984)463.

[8] P. Laurent and M. Eudier : Revue de Metallurgia, 6(1953)382.

[9] P. Duwez and H. Martens : A Dilatometric Study of the Sintering of Metal Powder Compacts, Trans. AIME, 185(1949) 571~577.

[10] ASM : Metals Handbook vol. 8(1973)293.

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