| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
Thermodynamic Properties, Structure and Phase Stabilities of Special Alloys
|
| Presentation Title |
Interdiffusion in Ternary Ti-Al-Mo System and Its Application during Homogenization Treatment |
| Author(s) |
Gyanendra Chauhan, Kaustubh Kulkarni |
| On-Site Speaker (Planned) |
Gyanendra Chauhan |
| Abstract Scope |
Interdiffusion study of ternary Ti-Al-Mo alloys, a subset of many important beta-Ti alloys is important for diffusional behavior understanding of Ti-Al-Mo based alloys and in development of cost-effective manufacturing routes for mass production. In this study, interdiffusion coefficients are evaluated over a larger composition range of beta phase field of ternary Ti-Al-Mo system. 11 independent diffusion couples are annealed for 48hr at 1100°C. Experimental concentration profiles of diffusion structures, evaluated from EPMA-WDS are fitted and are analyzed for interdiffusion fluxes. Interdiffusion coefficients are calculated at 32 intersection points among diffusion paths. These calculated interdiffusivities are correlated with composition by empirical fitting. Using finite difference method based on F.T.C.S. scheme, the diffusion profiles are generated using empirically fitted composition dependent diffusion-data. Validity of evaluated diffusion-data is tested using multi-layered assembly of binary Ti-Al and Ti-Mo alloys, which are diffusion annealed for different duration analogous to dendrites homogenization, important for industrial heat-treatment. |