Title: ISOTHERMAL FORGING PROCESS DESIGN FOR DISK COMPONENT OF PM Rene 95 ALLOY BASED ON NUMERICAL SIMULATION
Abstract: Isothermal forging process design for medium size PM Rene 95 turbine disk(about 630 mm. in outer diameter)was conducted based on thermal-mechanical finite element code FORMT. The simulation results show that the molybdenum based die material(TZM alloy) can meet the practical need for both close die and open die forming when the disk is isothermal forged at 1050C with pseudo-constant strain rate of 10-3 s-1; however, for die material of K21 alloy, dies might failure due to their local temperature increasing induced by plastic deformation of workpiece and lubrication at die/workpiece interface even when it is isothermal forged at the lower temperature of 1000C. Furthermore, isothermal forging at the higher temperature with TZM die material can decrease the deformation resistance to a great extant.
Publication Year: 2002
Publication Date: 2002-01-01
Language: en
Type: article
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