Temperature field analysis and its application in hot continuous rolling of Inconel 718 superalloy

doi:10.1016/S1006-7191(08)60074-5

Abstract

Abstract:

A coupled thermo-mechanical model containing metal flow and temperature field for calculating temperature variation has been developed on fourteen-pass hot continuous rolling of round rod for Inconel 718 alloy using 3D elastic-plastic finite element method (FEM). The temperature of characteristic analysis points in the intermediate cross-section of the workpiece has been simulated at initial temperature ranging from 960 to 1000 ℃ and initial velocity in range of 0.15-0.55 m．s^-1. Based on finite element analysis and microstructural observation in cylindrical hot compression experiments, the appropriate hot continuous rolling technologies have been designed for rod products with different diameters. For a real rolling practice, the simulated surface temperature was examined and is in good agreement with the measured one.

Key words: Hot continuous rolling, Elastic-plastic finite element method (FEM), Coupled analysis, Temperature field, Inconel 718

Fengli SUI,Liqing CHEN,Xianghua LIU,Lintao WANG,Wei LI. Temperature field analysis and its application in hot continuous rolling of Inconel 718 superalloy[J]. Acta Metallurgica Sinica (English Letters), 2009, 22(2): 81-90.

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