Ling, C.; Ren, X.; Wang, X.; Li, Y.; Liu, Z.; Wang, B.; Zhao, J. Dynamic Mechanical Properties and Modified Johnson-Cook Model Considering Recrystallization Softening for Nickel-Based Powder Metallurgy Superalloys. Materials2024, 17, 670.
Ling, C.; Ren, X.; Wang, X.; Li, Y.; Liu, Z.; Wang, B.; Zhao, J. Dynamic Mechanical Properties and Modified Johnson-Cook Model Considering Recrystallization Softening for Nickel-Based Powder Metallurgy Superalloys. Materials 2024, 17, 670.
Ling, C.; Ren, X.; Wang, X.; Li, Y.; Liu, Z.; Wang, B.; Zhao, J. Dynamic Mechanical Properties and Modified Johnson-Cook Model Considering Recrystallization Softening for Nickel-Based Powder Metallurgy Superalloys. Materials2024, 17, 670.
Ling, C.; Ren, X.; Wang, X.; Li, Y.; Liu, Z.; Wang, B.; Zhao, J. Dynamic Mechanical Properties and Modified Johnson-Cook Model Considering Recrystallization Softening for Nickel-Based Powder Metallurgy Superalloys. Materials 2024, 17, 670.
Abstract
The material undergoes high temperature and high strain rate deformation process during cutting process, may induce the dynamic recrystallization behavior and result the evolution of dynamic mechanical properties of the material to be machined. In this paper, the modified Johnson-Cook(J-C) model for Nickel based powder metallurgy superalloy considering dynamic recrystallization behavior in high strain rate and temperature is proposed. The dynamic mechanical properties of the material under different strain rates and temperature conditions are obtained by quasi-static compression test and split Hopkinson pressure bar (SHPB) test. The coefficients of the modified J-C model are obtained by linear regression method. The modified model is verified by comparison with experimental and model prediction results. The results show that the modified J-C model proposed in this paper can accurately describe the mechanical properties of nickel-based powder metallurgy superalloys at high temperature and high strain rate. Which provides help for studying the cutting mechanism and finite element simulation of nickel-based powder metallurgy superalloy.
Engineering, Industrial and Manufacturing Engineering
Copyright:
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