Transactions of Materials and Heat Treatment

Title：Numerical simulation of microstructure evolution during GH864 alloy disc forging

Authors： YAO Zhi-hao WANG Qiu-yu ZHANG Mai-cang DONG Jian-xin

Unit： University of Science and Technology Beijing

KeyWords： GH864 superalloy forging microstructure evolution numerical simulation deformation parameters

ClassificationCode：TG316.3

year,vol(issue):pagenumber：2011,36(3):1-7

Abstract：

In order to predict the evolution of microstructure in GH864 superalloy for Φ1250mm deformation disc, numerical simulation for the microstructure evolution of GH864 alloy disc was implemented by MSC.Super-form software, then the coupling between thermo-mechanical and microstructure evolution was realized. Meanwhile, the method was used to predict the influence of various deformation parameters, such as initial deformation temperature, strain rate, mould preheating temperature, frication coefficient and insulation measures and so on. The results show that the numerical simulation results are consistent with the actual results whose microstructures are researched from Φ1250mm sample ring. The microstructures could be optimized by adding insulation measures of forgings, increasing mould preheating temperature, using good lubrication lubricant and increasing deformation rate.

Funds：

国家自然科学基金资助项目(51071017)

Reference：

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