Peer-Reviewed Journal Details
Mandatory Fields
Leen, SB,Giuliano, G
Superplastic Forming Of Advanced Metallic Materials: Methods And Applications
Predicting instability in superplastic forming of metals
Optional Fields
instability necking microstructure inhomogeneity superplastic forming limit diagram (SPFLD) damage mechanics CONSTITUTIVE-EQUATIONS FAILURE DEFORMATION OPTIMIZATION PRESSURE BEHAVIOR NECKING
This chapter reviews the major approaches to the prediction of instability in superplastic forming. Theoretical and numerical approaches are treated. Key aspects include the effects of microstructure and the identification of an appropriate constitutive equation set. It is argued that the development of an easy-to-visualise superplastic forming limit diagram (SPFLD) concept is attractive as a vehicle to facilitate more widespread use of the superplastic forming (SPF) process, which is a key challenge to the technology. A case study on failure prediction for two titanium alloys is used for illustrative and comparative purposes with respect to a number of the key predictive techniques.
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