期刊
COMPUTATIONAL MATERIALS SCIENCE
卷 81, 期 -, 页码 284-289出版社
ELSEVIER
DOI: 10.1016/j.commatsci.2013.08.029
关键词
Multi-directional forging; Shear Lag model; Nes model; Strength; Dislocation density
资金
- research board of Sharif University of Technology
In this study, a hybrid model is presented to predict the dislocation density and strength evolution of the rheoforged non-dendritic A356 alloy during multi-directional forging. Regarding the characteristics of non-dendritic A356 alloy, combination of Shear Lag and Nes models is used for the eutectic structure, and Nes model is used for the alpha-Al globular phase. The aspect ratio variations of Si particles in eutectic structure during 3 passes of multi-directional forging do not change the model predictions, significantly. Model predictions on shear stress are in good agreement with experimental results of shear punch test. (C) 2013 Elsevier B.V. All rights reserved.
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