The Constitutive Model for High Temperature Flow Behavior of SiC/6168Al Composite

Abstract:

The hot deformation behavior of SiC/6168Al composite was studied by means of hot compression tests in the temperature range of 300-450 °C and strain rate range of 0.01-10 s^-1. The constitutive model was developed to predict the stress-strain curves of this composite during hot deformation. This model was established by considering the effect of the strain on material constants calculated by using the Zenter-Hollomon parameter in the hyperbolic Arrhenius-type equation. It was found that the relationship of n, α, Q, lnA and ε could be expressed by a five-order polynomial. The stress-strain curves obtained by this model showed a good agreement with experimental results. The proposed model can accurately describe the hot flow behavior of SiC/6168Al composite, and can be used to numerically analyze the hot forming processes.

• Periodical: Advanced Materials Research (Volume 1089)
• Pages: 37-41
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1089.37
• Online since: January 2015
• Authors: Jiang Wang*, Sheng Li Guo, Sheng Pu Liu, Cheng Liu, Qi Fei Zheng
• Keywords: Constitutive Model, Flow Behavior, Hot Deformation, SiC/6168Al Composite

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