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International Journal of Engineering، جلد ۲۹، شماره ۱، صفحات ۷۸-۸۶
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عنوان انگلیسی Experimental and Finite Element Simulation of Nano-indentation on Metal Matrix Composites: Hardness Prediction
چکیده انگلیسی مقاله The scientifi c importance of nanocomposites are being increased due to their improvedproperties. This paper is divided into two parts. First, Al-Al2O3 nanocomposite wasproduced by using ball milling technique followed by cold compaction and sintering.Microstructure and morphology studies were done through SEM, TEM, and EDX anal-ysis on the produced powder. The mechanical properties of the produced compositewere determined by the tensile test. Also, nano-indentation experiment was conductedon the produced composite to determine its hardness. Second, a 2-D axisymmetrymodel was implemented in ANSYS software to simulate the nano-indentation experi-ment on pure aluminum and Al-Al2O3 nanocomposite. A conical indenter with 70.3was considered in simulations. The results show that, a homogenous distribution of thereinforcement in the matrix was achieved after 20 h milling. The elastic modulus, yieldstrength, and the hardness of the produced composite were increased than the puremetal. The FE simulation results show a good agreement with the experimental resultsfor nano-indentation experiment. The scatter of the FE results from the experimentalresults in the pure metal is smaller than that observed for the nanocomposite.
کلیدواژه‌های انگلیسی مقاله Nanocomposite, Mechanical milling, FE simulation, Hardness
نویسندگان مقاله Ahmed Wagih |
Mechanical engineering, Girona University

نشانی اینترنتی http://www.ije.ir/article_72652_16fbd9a976a498e09dd25f6921a27dfb.pdf
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