Transactions of Materials and Heat Treatment

Title：Numerical simulation of microstructure in the finish forging process of TC4 alloy blade

Authors： Qi Guangxia Wang Xiaoliang Shi Likun

Unit： Shenyang Ligong University Shenyang Liming Aero-Engine Group Corporation

KeyWords： TC4 titanium alloy blade finish forging microstructure numerical simulation

ClassificationCode：TG316.3

year,vol(issue):pagenumber：2014,39(12):156-161

Abstract：

The recrystallization model of TC4 titanium alloy was established based on the experimental data of the thermal simulation compress and metallography, and microstructure evolution could be forecasted by developing the function of simulation software Deform subroutine. The finish forging process of TC4 titanium alloy blade was simulated, and the distribution laws of volume fraction of dynamic recrystallization and the average grain size for the blade were analyzed under different deformation temperatures, deformation rates and friction coefficients. The simulation results show that the change trend of average grain size for blade decreases after increasing first with the rising deformation temperature. The distribution trend of average grain size for blade decreases after increasing first with the acceleration of the deformation speed, as well as volume fraction of dynamic recrystallization increases gradually. However, the distribution trend of average grain size for blade increases after decreasing first with the increase of friction coefficients gradually, as well as the change of volume fraction of dynamic recrystallization increases gradually. Thus, the friction coefficients should be chosen as small as possible to get a better property of forgings.

Funds：

齐广霞(1960-)，女，硕士，教授;通讯作者：王晓良(1988-)，女，硕士研究生

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