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Abstract

The sintering behaviour and mechanical properties of injection moulded Fe–Cu parts made from composite and elemental powders were studied. Composite powders showed improved properties compared with mixed powders. The differences in the results of sintering are explained by the microstructure and the wetting behaviour of copper in each system. Dilatometry analyses indicated that the α–γ phase transformation temperature decreased to 850°C with the addition of 8%Cu. No swelling was observed when copper melted because of the presence of a large number of small interparticle pores. Most of the densification occurred in the α phase range and above the melting point of copper. The best properties obtained were 95·2% density, 420 MN m⁻² tensile strength, 72 HRB hardness, and 18% elongation. These improved properties are attributed to the solution strengthening and grain refinement contributed by copper. PM/0712

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References

German

R. M.

: ‘Powder metallurgy science’, 403; 1994, Princeton, NJ, MPIF.

Lenel

F. V.

: ‘Powder metallurgy, principles and applications’, 401; 1980, Princeton, NJ, MPIF.

Lund

J. A.

and LAWSON

A. M.

: Trans. Metall. Soc. AIME, 1966, 236, 581.

Hornbogen

and GLENN

R. C.

: Trans. Metall. Soc. AIME, 1960, 218, 1064.

Wilson

E. A.

:. J. Iron Steel Inst., Feb. 1968, 164.

Lenel

F. V.

and HWANG

K. S.

: Powder Metall. Int., 1980, 12, (2), 88.

Kohara

and TATSUZAWA

: J. Jpn Soc. Powder Powder Metall., 1986, 33, 139.

Kohara

and TATSUZAWA

: J. Jpn Soc. Powder Powder Metall., 1983, 30, (5), 190.

Kaysser

W. A.

, HUPPMANN

W. J.

, and PETZOW

: Powder Metall., 1980, 23, (2), 86–91.

10.

Tabeshfar

and CHADWICK

G. A.

: Powder Metall., 1984, 27, (1), 19–24.

11.

Wanibe

, YOKOYAMA

, and ITOH

: Powder Metall., 1990, 33, (1), 65–69.

12.

Friedrich

, WIETERS

K.-P.

, and CHEHADE

: in ‘Advances in powder metallurgy and particulate materials’, (compiled by Capus

J. M.

and German

R. M.

), Vol. 3, 85; 1992, Princeton, NJ, MPIF.

13.

Trudel

and ANGERS

: Int. J. Powder Metall. Powder Technol., 1975, 11, (1), 5.

14.

Lawcock

R. L.

and DAVIES

T. J.

: Powder Metall., 1990, 33, (2), 147–150.

15.

Cizeron

and LACOMBE

: Comptes Rendus, 1955, 241, 409.

16.

Buffington

F. S.

, HIRANO

, and COHEN

: Acta Metall., 1961, 9, 434.

17.

Borisov

V. T.

, GOLIKOV

V. M.

, and SCHERBEDINSKIY

G. V.

: Fiz. Met. Metalloved., 1964, 17, (6), 881.

18.

Underwood

E. E.

: ‘Quantitative stereology’, 31; 1970, Reading, MA, Addison—Wesley.

19.

Multr

L. E.

: ‘Interfacial phenomena in metals and alloys’, 124; 1975, Reading, MA, Addison—Wesley.

20.

Murr

L. E.

: ‘Interfacial phenomena in metals and alloys’, 131; 1975, Reading, MA, Addison—Wesley.

21.

Murr

L. E.

: ‘Interfacial phenomena in metals and alloys’, 102; 1975, Reading, MA, Addison—Wesley.

22.

Hough

R. R.

and ROLLS

: Metall. Trans., 1971, 2, 2471.

Properties of Injection Moulded Fe—Cu Parts Made from Composite and Elemental Powders

Abstract

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