Abstract
Abstract Transformation superplasticity is a Newtonian deformation mechanism observed when polymorphic materials are subjected to small external stresses during their phase transformation. Although mostly studied during thermal excursions, recent investigations have observed this mechanism during excursions in chemical composition in the Ti-H system. In this work, methodologies for modelling this so-called ‘chemically induced transformation superplasticity’ are discussed, simultaneously considering the kinetic moving-boundary diffusion problem associated with the titanium α-β transformation, as well as the internal strains due to chemical swelling and the transformation. Two existing models, including, firstly, an analytical model for thermal-cycling-induced transformation superplasticity and, secondly, a numerical model for creep under conditions of chemical cycling, are adapted to the case of chemically induced transformation superplasticity. Both modelling approaches predict the main features of transformation superplasticity and are found to agree reasonably with the existing experimental data.
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.
