Two ingots were produced by centrifugal casting at mould rotational speeds of 600 rpm and 800 rpm using 20 vol% SiCp/AlSi9Mg composite melt, respectively. The microstructure along the radial direction of cross-sectional sample of ingots was presented. SiC particles migrated towards the external circumference of the tube, and the distribution of SiC particles became uniform under centrifugal force. Voids in 20 vol% SiCp/AlSi9Mg composite melt migrated towards the inner circumference of the tube. The quantitative analysis results indicated that not only SiC particles but also primary a phases segregated greatly in centrifugal casting resulting from the transportation behavior of constitutions with different densities in the SiCp/AlSi9Mg composite melt. In addition, the eutectic Si was broken owing to the motion of SiCp/AlSi9Mg composite melt during centrifugal casting.
参考文献
| [1] | Xiaoyu Shen;Shubin Ren;Xinbo He .Study on methods to strengthen SiC preforms for SiCp/Al composites by pressureless infiltration[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2009(1/2):158-163. |
| [2] | Z. Humberto Melgarejo;O. Marcelo Suarez;Kumar Sridharan .Microstructure and properties of functionally graded Al-Mg-B composites fabricated by centrifugal casting[J].Composites. Part A, Applied science and manufacturing,2008(7):1150-1158. |
| [3] | Shang-Nan Chou;Jow-Lay Huang;Ding-Fwu Lii .The mechanical properties and microstructure of Al_2O_3/aluminum alloy composites fabricated by squeeze casting[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2007(1/2):124-130. |
| [4] | X.N. Zhang;L. Geng;G.S. Wang .Fabrication of Al-based hybrid composites reinforced with SiC whiskers and SiC nanoparticles by squeeze casting[J].Journal of Materials Processing Technology,2006(1/3):146-151. |
| [5] | F. Akhlaghi;A. Lajevardi;H. M. Maghanaki .Effects of casting temperature on the microstructure and wear[J].Journal of Materials Processing Technology,2004(0):1874-1880. |
| [6] | S. Naher;D. Brabazon;L. Looney .Computational and experimental analysis of participate distribution during Al-SiC MMC fabrication[J].Composites, Part A. Applied science and manufacturing,2007(3):719-729. |
| [7] | Weiqiang ZHANG,Haifang SHI,Huameng FU.Distribution of SiCp in Al and Al-Cu Alloy Centrifugally Cast with Electromagnetic Stirring[J].材料科学技术学报(英文版),2004(04):448-450. |
| [8] | Nairobi B. Duque;Z. Humberto Melgarejo;O. Marcelo Suarez .Functionally graded aluminum matrix composites produced by centrifugal casting[J].Materials Characterization,2005(2):167-171. |
| [9] | J. W. Gao;C. Y. Wang .Modeling the solidification of functionally graded materials by centrifugal casting[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2000(2):207-215. |
| [10] | Yoshimi Watanabe;Akihiro Kawamoto;Koichi Matsuda .Particle size distributions in functionally graded materials fabricated by the centrifugal solid-particle method[J].Composites science and technology,2002(6):881-888. |
| [11] | Rodriguez-Castro R.;Kelestemur MH. .Processing and microstructural characterization of functionally gradient Al A359/SiCp composite[J].Journal of Materials Science,2002(9):1813-1821. |
| [12] | Velhinho A.;Sequeira PD.;Martins R.;Vignoles G.;Fernandes FB.;Botas JD.;Rocha LA. .X-ray tomographic imaging of Al/SiCp functionally graded composites fabricated by centrifugal casting[J].Nuclear Instruments and Methods in Physics Research, Section B. Beam Interactions with Materials and Atoms,2003(0):295-302. |
| [13] | B. Balout;J. Masounave;V. Songmene .Modeling of eutectic macrosegregation in centrifugal casting of thin walled ZA8 zinc alloy[J].Journal of Materials Processing Technology,2009(18/19):5955-5963. |
| [14] | Tetsuro Ogawa;Yoshimi Watanabe;Hisashi Sato .Theoretical study on fabrication of functionally graded material with density gradient by a centrifugal solid-particle method[J].Composites, Part A. Applied science and manufacturing,2006(12):2194-2200. |
| [15] | B.P. Gautham;P.C. Kapur .Rheological model for short duration response of semi-solid metals[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2005(1/2):223-228. |
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