Transactions of Materials and Heat Treatment

Title：Influence of process parameters and numerical simulation on

Authors： Wang Bowei Tang Jun Zeng Weidong Zhang Shuai Qin Weidong

Unit： AVIC Shaanxi Hong Yuan Aviation Forging Co. Ltd. School of Materials Science and Engineering Northwestern Polytechnical University

KeyWords： titanium alloy TC17 integral blisk β phase isothermal forging finite element simulation strain

ClassificationCode：TG146.2

year,vol(issue):pagenumber：2017,42(6):7-11

Abstract：

The isothermal forging process of integral blisk for titanium alloy TC17 in β zone was numerically simulated by twodimensional (2D) finite element (FEM) software Deform2D, and the distributions of equivalent strain fields in different parts of integral blisk were studied. Then, the process parameters and the size of wasted billet were optimized based on the results of FEM simulation, and the experiments of isothermal forging process of titanium alloy TC17 were carried out. The experiment results show that the initial coarse β phase grains of titanium alloy TC17 are fully deformed, and the bending and intermittent small α phases are precipitated in grain boundary. However, the interlaced and slender ideal secondary α phases are precipitated in intracrystalline to exhibit the basketweave microstructure after the isothermal forging process. The strength, plasticity and fracture toughness of the integral blisk forging can be matched ideally when the strain reaches 0.75.

Funds：

陕西省科技创新项目（20146102120054）

王波伟（1983-），男，硕士，工程师

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