Hardness and Microstructure of Mixed Al-CNF Powder Extrusion

Open access

Abstract

In this study, mechanical properties and microstructures of extruded aluminum matrix composites were investigated. The composite materials were manufactured by two step methods: powder metallurgy (mixture of aluminum powder and carbon fiber using a turbular mixer, pressing of mixed aluminum powder and carbon fiber using a cold isostatic pressing) and hot extrusion of pressed aluminum powder and carbon fiber. For the mixing of Al powder and carbon fibers, aluminum powder was used as a powder with an average particle size of 30 micrometer and the addition of the carbon fibers was 50% of volume. In order to make mixing easier, it was mixed under an optimal condition of turbular mixer with a rotational speed of 60 rpm and time of 1800s. The process of the hot-extrusion was heated at 450°C for 1 hour. Then, it was hot-extruded with a condition of extrusion ratio of 19 and ram speed of 2 mm/s. The microstructural analysis of extruded aluminum matrix composites bars and semi-solid casted alloys were carried out with the optical microscope, scanning electron microscope and X-ray diffraction. Its mechanical properties were evaluated by Vickers hardness and tensile test.

[1] J. Park, M.W. Shin, C.C. Lee, Optics Letters 29, 22 (2004).

[2] L. Yang, J. Hu and M.W. Shin, IEEE Electron Device Letters 29, 8 (2008).

[3] L. Kim, M.W. Shin, IEEE Trans. Component and Packaging Technology 30, 4 (2007)

[4] K. Shinozaki, A. Tsuge, Characterization Techniques of Ceramics: Development of high Thermal Conductive Aluminum nitride (in JPN), Ceramics, 21 (1986).

[5] H.L. Lee, S.M. Ha, Y. Yoo, S.-G. Lee, Polymer Science and Technology 24 (1), (2013).

[6] S.H. Yu, ICHMT 5 (13-14), 1609-1610 (2009).

[7] H.W. Kang, B.D. Kang, K.S. Park, Kase 51 (3), 12-19 (2008).

[8] P. Feltham, Metal Treatment 23, 440 (1956) CA 94305, June.

[9] P.K. Saha, ASM international, Aluminum Extrusion Technology, pp.1-10 (2000.)

[10] L.J. Matienzo, K.J. Holub, W. Vandatta, Applications of Surface Science 15, 307-320 (1982).

[11] T. Minoda, H. Hayakawa, S. Matsuda, H. Yoshida, 7th international aluminum extrusion technology seminar, 23-29 (2000).

[12] K. Kang, H. Park, C. Lee, J. Kor. Inst. Surf. Eng. 45 (1), 1-7 (2012).

Archives of Metallurgy and Materials

The Journal of Institute of Metallurgy and Materials Science and Commitee on Metallurgy of Polish Academy of Sciences

Journal Information


IMPACT FACTOR 2016: 0.571
5-year IMPACT FACTOR: 0.776

CiteScore 2016: 0.85

SCImago Journal Rank (SJR) 2016: 0.347
Source Normalized Impact per Paper (SNIP) 2016: 0.740

Metrics

All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 176 176 15
PDF Downloads 80 80 6