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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 16    No. 6    December 2006

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Numerical simulation on forging process of TC4 alloy mounting parts
LÜ Cheng(吕 成)1, 2, ZHANG Li-wen(张立文)1, 2

1. State Key Laboratory for Materials Modification by Later, 
Ion and Electron Beams, Dalian University of Technology, Dalian 116024, China; 
2. School of Materials Science and Engineering, Dalian University of Technology, 
Dalian 116024, China

Abstract: In order to eliminate forging defects appearing in production, based on the rigid-viscoplastic FEM principle, the DEFORM3D software package was employed to simulate the forming process of TC4 alloy mounting part and to optimize the process parameters. In this simulation, the temperature dependency of the thermal and mechanical properties of material was considered. Based on the simulation, the metal flow and thermomechanical field variables such as stress and damage are obtained. The simulation results show that the forging defects are caused by improper die dimension and the optimized die dimension was proposed. To verify the validity of simulation results, forging experiments were also carried out in a forging plant. The forging experiments show that the optimized die dimension can ensure the quality of forging part, and it can provide reference to improve and optimize die design process.

 

Key words: TC4 alloy; forging defect; rigid-viscoplastic FEM; numerical simulation

ISSN 1672-7029
CN 43-1423/U

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