Year-end Sale % OFF 
Abstract
The addition of Sn to the Ti-Mo system can diminish the formation of ω phase and slow down the precipitation kinetics of α phase due to the low atomic diffusivity of Sn atoms in Ti. To explore α phase precipitation in Ti-13Mo and Ti-13Mo-6Sn (wt.%) alloys, differential scanning calorimetry (DSC) was applied using different heating rates to determine ω phase dissolution, α phase precipitation and β transus temperatures. The DSC results were then used to determine the aging heat treatment temperatures. Samples were heat-treated at 600 °C for 1 h and 24 h to examine microstructure features. The addition of Sn to Ti-13Mo alloy was found to increase the β phase lattice parameter, increasing β transus temperatures and resulting in microstructures with heterogeneous and coarser α phase precipitation.
Highlights
Metastable β Ti alloys are being employed increasingly in several fields, from medicine to the aerospace industry, thanks to their unique features, such as enhanced biocompatibility, higher corrosion resistance and exceptional mechanical behavior [1,2]
The microstructure and mechanical behavior of metastable β Ti-Mo alloys are strongly dependent on their phase transformation features, which can be influenced by the addition of Sn
Samples of the Ti-13Mo and Ti-13Mo-6Sn alloys were solution heat-treated at temperatures in the β field (ST) and water quenched (WQ)
Summary
Metastable β Ti alloys are being employed increasingly in several fields, from medicine to the aerospace industry, thanks to their unique features, such as enhanced biocompatibility, higher corrosion resistance and exceptional mechanical behavior [1,2]. A powerful way to improve the mechanical behavior of β type Ti alloys is through controlled precipitation of finely dispersed α phase in the β matrix by means of aging heat treatment. Solution heat-treated β Ti alloys subjected to an aging heat treatment at intermediary temperatures can present β phase decomposition and ω and α phase precipitations This is an intricate transformation process that involves precipitation of metastable ω phase in the β phase matrix, followed by α phase precipitation. The microstructure and mechanical behavior of metastable β Ti-Mo alloys are strongly dependent on their phase transformation features, which can be influenced by the addition of Sn. the focus of this study is an investigation of the correlation between phase transformation and microstructure in a new β Ti-Mo-Sn alloy, based on differential scanning calorimetry (DSC) and aging heat treatments
Sign-in/Register to view highlights & summary 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.
