Field Assisted Sintering Consolidation of Al-Si-Fe-X Alloy Powder/Flakes Produced through Air Atomization/Melt Spinning

Abstract:

Article Preview

Melt-spun flakes and air atomised powder of a multi-component Al-Si-Fe-X alloy were consolidated by field assisted (FAST) or spark plasma sintering (SPS) in vacuum using steel dies and punches. Experiments were carried out at 350, 400, 450 and 500°C under applied loads ranging from 81 to 283 MPa. The resulting compacts were microstructurally and mechanically characterized. Ultimate strength values up to 1000 MPa and plastic strains up to 20% were observed during compression tests. The effect of the powder shape on the sintering behaviour is compared. The effect of process parameters such as temperature and applied load on the densification and mechanical properties is discussed. It was found that compacts sintered from melt-spun flakes resulted in a higher strength and ductility than compacts produced from air-atomized powder, sintered under identical conditions.

Info:

Periodical:

Materials Science Forum (Volumes 519-521)

Edited by:

W.J. Poole, M.A. Wells and D.J. Lloyd

Pages:

1409-1414

DOI:

10.4028/www.scientific.net/MSF.519-521.1409

Citation:

K.Y. Sastry et al., "Field Assisted Sintering Consolidation of Al-Si-Fe-X Alloy Powder/Flakes Produced through Air Atomization/Melt Spinning", Materials Science Forum, Vols. 519-521, pp. 1409-1414, 2006

Online since:

July 2006

Export:

Price:

$35.00

[1] T. Schubert, T. Weißgärber, B. Kieback, H. Balzer, H. C. Neubing, U. Baum and R. Braun: Metal Powder Report March (2005), p.32.

DOI: 10.1016/s0026-0657(05)00370-x

[2] M. L. Ovecoglu, N. Unlu, N. Eruslu and A. Genc: Mater. Lett. Vol. 57 (2003), p.3296.

[3] F. H. Froes and C. M. Ward-Close: J. Mater. Process. Technol. Vol. 48 (1995), p.667.

[4] T. Nage, S. Tomida, A. Okada and N. Inada: Surf. Coat. Technol. Vol. 169-170 (2003), p.174.

[5] G. Xie, O. Ohashi, M. Song, K. Mitsuishi and K. Furuya: Appl. Surf. Sci. Vol. 241 (2005), p.102.

[6] K.Y. Sastry, L. Froyen, J. Vleugels and O. Van der Biest: Metal Powder Report, July/August (2005), p.44.

[7] G. Timmermans and L. Froyen: Scripta Mater. Vol. 40(1999), p.743.

[8] J.M. Sater, T.H. Sanders, R.K. Garrett in Rapidly Solidified Powder Aluminium Alloys Eds. M.E. Fine and E.A. Starke , ASTM STP 890 (1984), p.83.

DOI: 10.1520/stp33025s

In order to see related information, you need to Login.