中國(guó)有色金屬學(xué)報(bào)(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 8 No. 4 December 1998 |
PREDICTION OF SURFACE DEFECTS IN DISK FORGING PROCESS FOR FGH95ALLOY USING RING-LIKE BILLET BY COMPUTER SIMULATION
Li Yuanchun, Cui Jian and Yan Minggao
（Beijing Institute of Aeronautical Materials, Beijing100095, P. R. China）
Abstract:The forging processes of P/M FGH95 alloy disk using ring-like billet were simulated by large deformation rigid visco-plastic finite element method (FEM). Some surface defects like laps and underfill were predicted. The relative contacting length between billet and die (the ratio of the contacting length to the initial height of billet) was proposed as a criterion to judge whether the lap defects would occur or not.
Key words: rigid visco-plastic FEM ring-like billet surface defects
