Constitutive Equation for Elevated Temperature Flow Behavior of Fe-Cr-Ni Preform Reinforced Al-Si-Cu-Ni-Mg Aluminum Composite

Abstract:

In this paper, squeeze casting process was adopted to produce the Fe-Cr-Ni preform reinforced Al-Si-Cu-Ni-Mg aluminum composite. And then, T6 heat treatment was conducted to enhance the composite’s performance. After which, isothermal compression tests in temperature range of 473-773 K at an interval of 150 K and strain rate range from 0.001 to 10 s^-1 were carried out on Gleeble 3500 thermo-mechanical simulation machine. It is found that, for a specific strain rate, the flow stress decreases markedly with temperature increases. And for a fixed temperature, the flow stress generally increases as the strain rate increases. Based on the experimental true stress-true strain data, the Arrhenius type model was established.

• Periodical: Applied Mechanics and Materials (Volumes 633-634)
• Pages: 431-435
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.633-634.431
• Online since: September 2014
• Authors: Ling Zhan Zhou*, Li Ming Yang, Yin Jiang Peng, Xiu Rong Zhu
• Keywords: Composite, Constitutive Equation, Fe-Cr-Ni, Isothermal Compression

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