Download e-book for kindle: Advances on hot extrusion and simulation of light alloys : by A Erman Tekkaya; Nooman Ben Khalifa

By A Erman Tekkaya; Nooman Ben Khalifa

ISBN-10: 3038133647

ISBN-13: 9783038133643

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A) (b) Fig. 6: (a) Subgrain size [m] as well as (b) grain size [m] evolution in the extrudate. The marked areas define the regions, which were compared with the experimental investigations. Hence the comparison of simulations and experiments show a good correspondence with regard to grain and grain and subgrain size (compare Fig. 5b and Fig. 6) of the air cooled condition. The water quenched specimen was not easy to characterize due to its fine substructure (Fig. 5a), however the difference between these two states has been numerically simulated and the expected tendency was verified.

A385 (2004) pp. 157-165. Key Engineering Materials Vol. 35 An Assessment of the Grain Structure Evolution during Hot Forward Extrusion of Aluminum Alloy 7020 A. Foydl1,a, N. Ben Khalifa1,b, A. E. de c Keywords: Extrusion, Aluminum, Microstructure, Finite Element Analysis Abstract. The current investigation is concerned with the grain structure evolution in an Al-Zn alloy (EN AW-7020) during the hot forward extrusion process. In order to analyze that, a miniature hot forward extrusion setup was designed which allows the quenching of the extrusion butt immediately after extrusion.

In order to gain a better understanding of the process, the shape of the deformed grains was analyzed and the process was simulated. g. dead metal zone and shear zone. The FE simulations showing the different grain zones were also illustrated. Simulation results and the micrographs were quite promising to find parameters for simulation models in order to predict grain sizes with the method presented in the current research work. g. aluminum or magnesium). The forming occurs at high temperatures and pressures.

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Advances on hot extrusion and simulation of light alloys : selected, peer reviewed papers from the International Conference on Extrusion and Benchmark (ICEB), Dortmund 2009, Germany, September 16.-17. 2009 by A Erman Tekkaya; Nooman Ben Khalifa


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