A simulation model for predicting surface integrity coupled thermal–mechanical effect in turning of Inconel 718 super alloy

Residual stress as well as microstructure modification in machined surface layer directly influence fatigue performance of difficult-to-machine materials especially for nickel-based super alloy. However, the prediction of these factors still needs deeper study. In the paper, residual stress as well...

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Bibliographic Details
Published in:International journal of advanced manufacturing technology 2019-02, Vol.100 (5-8), p.1825-1837
Main Authors: Ren, Xiaoping, Liu, Zhanqiang
Format: Article
Language:English
Subjects:
CAE) and Design
Computer simulation
Computer-Aided Engineering (CAD
Cutting parameters
Cutting speed
Engineering
Feed rate
Industrial and Production Engineering
Mathematical models
Mechanical Engineering
Media Management
Microstructure
Nickel base alloys
Original Article
Predictions
Residual stress
Simulation
Superalloys
Surface layers
Surface properties
Turning (machining)
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Summary:Residual stress as well as microstructure modification in machined surface layer directly influence fatigue performance of difficult-to-machine materials especially for nickel-based super alloy. However, the prediction of these factors still needs deeper study. In the paper, residual stress as well as microstructure modification in machined surface is predicted by a simulation model coupling thermal–mechanical effect. The predictions of FE model are validated by experimental measurements. Through numerical simulation results, the effects of thermal and mechanical loadings are distinguished. Besides, the influence of cutting parameters on the residual stress and microstructure was also obtained. Within the range of experimental parameters, the combination of larger cutting speed and lower feed rate is the recommended optimized selection of cutting parameters to obtain the better surface quality in turning Inconel 718.
ISSN:0268-3768
1433-3015
DOI:10.1007/s00170-018-2704-4