Abstract
Combined analytical and numerical optimisation procedures have been developed to determine the material constants in superplastic constitutive equations. The conventional grain growth rate equation has been modified to enable accurate modelling of the isothermal and plastic-strain-induced grain growths for different microstructures of a titanium alloy. A set of unified viscoplastic constitutive equations for Ti–6Al–4V at 927°C, which incorporates isotropic hardening and grain growth, has been fully determined from experimental data for different initial grain sizes and strain rates. Close agreement between the predicted and experimental stress–strain relationships has been achieved. In addition, the contributions of hardening constituents, such as strain-rate hardening, isotropic hardening and the hardening due to grain growth have been modelled.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
