An Approach to Optimize Size Parameters of Forging by Combining Hot-Processing Map and FEM

作者：Hu, H. E.; Wang, X. Y.^*; Deng, L.

来源：Journal of Materials Engineering and Performance, 2014, 23(11): 3887-3895.

DOI：10.1007/s11665-014-1182-6

• aluminum alloy
• finite element method (FEM)
• hot-processing map
• size parameter
• workability

The size parameters of 6061 aluminum alloy rib-web forging were optimized by using hot-processing map and finite element method (FEM) based on high-temperature compression data. The results show that the stress level of the alloy can be represented by a Zener-Holloman parameter in a hyperbolic sine-type equation with the hot deformation activation energy of 343.7 kJ/mol. Dynamic recovery and dynamic recrystallization concurrently preceded during high-temperature deformation of the alloy. Optimal hot-processing parameters for the alloy corresponding to the peak value of 0.42 are 753 K and 0.001 s(-1). The instability domain occurs at deformation temperature lower than 653 K. FEM is an available method to validate hot-processing map in actual manufacture by analyzing the effect of corner radius, rib width, and web thickness on workability of rib-web forging of the alloy. Size parameters of die forgings can be optimized conveniently by combining hot-processing map and FEM.

• 出版日期2014-11
• 单位华中科技大学; 中国人民解放军海军工程大学