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采用摩擦搅拌工艺制备Al-Al2Cu原位纳米复合材料.pdf
Trans. Nonferrous Met. Soc. China 27(2017) 779−788
Fabrication of Al/Al Cu in situ nanocomposite via friction stir processing
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1 1 1 1 2
M. AZIZIEH , D. IRANPARAST , M. A. G. DEZFULI , Z. BALAK , H. S. KIM
1. Department of Materials Science and Engineering, College of Engineering,
Ahvaz Branch, Islamic Azad University, Ahvaz 61349-37333, Iran;
2. Department of Materials Science and Engineering,
Pohang University of Science and Technology (POSTECH), Pohang 790−784, Korea
Received 17 March 2016; accepted 28 May 2016
Abstract: The aim of present work is fabrication of Al/Al Cu in situ nanocomposite by friction stir processing (FSP) as well as
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investigation of FPS parameters such as rotational speed, travel speed, number of FSP passes, and pin profile on the microstructure,
chemical reaction, and microhardness of Al based nanocomposite. The Al Cu particles were formed rapidly due to mechanically
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activated effect of FSP as well as high heat generation due to Al−Cu exothermic reaction. The microstructure of the nanocomposites
consisted of a finer grained aluminium matrix (~15 µm), unreacted Cu nanoparticles (~40 nm), and reinforcement nanoparticles of
Al Cu. Irregular morphology of Al Cu is attributed to the local melting during FSP. Pin diameter has a higher effec
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