Transactions of Materials and Heat Treatment

Title：Study on plastic deformation behavior of GH5188 superalloy

Authors： DONG Yun-peng WANG Chao-yuan SONG Xiao-jun CHEN You-hong ZHANG Min-cong WANG Shu-yun

Unit： Beijing Institute of Aeronautical Materials

KeyWords： GH5188 superalloy isothermal forming flow stress constitutive equation

ClassificationCode：TG316

year,vol(issue):pagenumber：2013,38(6):116-121

Abstract：

The flow stress behavior of GH5188 superalloy during hot compression deformation conditions was investigated by isothermal hot compression on Gleeble-3500 hot simulation machine with the temperature range of 1030-1150 ℃ and strain rate range of 0.0110s-1. The constitutive equation based on the result of stress-strain, for describing the plastic deformation behavior of GH5188 superalloy during hot compression process was established using. the Arrhenius equation with strain value. The results show that the flow stress of GH5188 superalloy is greatly affected by temperature and strain rate. With the temperature increases or the strain rate decreases, the flow stress of GH5188 superalloy decreases greatly, and the plastic deformation gets in to the steady-going condition as soon as possible. The errors between calculated values and experimental values of GH5188 superalloy are nearly none. The constitutive equation has a good ability prediction.

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Reference：

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