Hardness and Microstructure of Mixed Al-CNF Powder Extrusion

• Autorzy: Kim D.-H. , Kim T.-J. , Lim S.-G.

Identyfikatory

DOI

10.1515/amm-2017-0190

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

Al-CNF composite; cold isotatic; presses; powder extrusion; LED; microstructure

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2017
• Tom: Vol. 62, iss. 2B
• Strony: 1267--1270
• Opis fizyczny: Bibliogr. 12 poz., rys.

Twórcy

autor

Kim D.-H.

• Recapt, Gyeongsang National Univ., Jinjudaro 501, Jinju, 52828, S. Korea

autor

Kim T.-J.

• Dept. of Manufacturing Processes Graduate School Gyeongsang National Univ., Jinjudaro 501, Jinju, 52828, S. Korea

autor

Lim S.-G.

• Recapt, Gyeongsang National Univ., Jinjudaro 501, Jinju, 52828, S. Korea
• Dept. of Manufacturing Processes Graduate School Gyeongsang National Univ., Jinjudaro 501, Jinju, 52828, S. Korea

Bibliografia

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• [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).

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)