The Numerical Simulation of Reinforced Particle Stress Concentration in Al-Si Alloy Rolling

Abstract:

Aiming at the problem that temperature filed changes can lead to edge cracks emerge to Al-Si alloy 4004 in the process of hot rolling, in this paper, finite element model of temperature field variations in the process of rolling have been established by the method of finite element numerical simulation. The relationship between temperature field variations and edge crack defects has been analyzed. The results show that temperature field of rolled piece is gradient variations, low in the center and high in the edge, metal accumulation in the edge, leading to stress concentration and forming cracks source, resulting in edge cracks arising in edge of roller piece. Finally, the reliability and accuracy of the numerical simulation method have been verified by hot-rolled tests and tensile tests. All the studies provide ideas for theoretical analysis of temperature variation during hot rolling and have important significance on improve the quality of products.

• Periodical: Applied Mechanics and Materials (Volumes 719-720)
• Pages: 55-58
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.719-720.55
• Online since: January 2015
• Authors: Yan Ling Zhao*, Xue Song Yang, Zi Yan Yun, Hong Bo Wang, Guan Hong Xu
• Keywords: Al-Si Alloy, Edge Cracks, Hot Rolling, Temperature Filed

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