Consolidation and Mechanical Properties of Gas Atomized Al-Si Powder

Abstract:

Article Preview

Hypereutectic prealloyed Al-20wt.%Si powders were prepared by the gas atomization process. Characteristics of the atomized Al-Si powders were investigated. With increasing gas pressure of the atomization, the average powder size and oxygen content decreased. Primary Si particles in the as-atomized powders were about 8-10 ㎛. Sintering behavior of the atomized Al-Si powders was discussed with sintering temperature. As-atomized powders were hot-pressed and extruded into a cylindrical shape. 96-99% of theoretical density was achieved by the hot consolidation. Microstructure changes as well as hardness and tensile properties of the samples were evaluated in this paper.

Info:

Periodical:

Materials Science Forum (Volumes 539-543)

Main Theme:

Edited by:

T. Chandra, K. Tsuzaki, M. Militzer , C. Ravindran

Pages:

2633-2638

Citation:

Y. J. Kim et al., "Consolidation and Mechanical Properties of Gas Atomized Al-Si Powder", Materials Science Forum, Vols. 539-543, pp. 2633-2638, 2007

Online since:

March 2007

Export:

Price:

$38.00

[1] I. J. Polmer, Light Alloys, Arnold, London, (1995).

[2] H. Yamagata, Materials Science Forum, 304-306 (1999) 797.

[3] H. Hosokawa, T. Hirata, M. Kohzu, K, Higashi, Proceedings of 2000 Powder Metallurgy World Congress (2000) 1053-1506.

[4] K. Matsuura, N. Kudoh, H. Kinoshita, H. Takahashi, Materails Chemistry and Physics, 81 (2003) 393-395.

[5] J. E. Hatch, Aluminum, Properties and Physical Metallurgy, ASM, Metals Park, Ohio, 1984, 346-347.

[6] E. J. Lavernia, J. D. Ayers, T. S. Srivatsan, International Materials Review, 37 (1992) 1.

Fetching data from Crossref.
This may take some time to load.