| About this Abstract |
| Meeting |
2010 TMS Annual Meeting & Exhibition
|
| Symposium
|
Processing Materials for Properties
|
| Presentation Title |
Microstructural characterization of shape memory alloys for ferromagnetic applications |
| Author(s) |
F. Ahmad Khalid |
| On-Site Speaker (Planned) |
F. Ahmad Khalid |
| Abstract Scope |
Ni-Mn-Ga shape memory alloys are employed for applications in actuation and sensing, robotics and aerospace industry. These alloys exhibit ferromagnetic behavior and are capable of demonstrating large reproducible strains in moderate magnetic fields. This work presents a study on the effect of annealing treatment on the microstructure and phases that are evolved in Mn-rich off-stoichiometric compositions of alloys. Microstructural and XRD results revealed martensitic structure at RT in the alloys with Mn≥28at% whereas the alloy containing higher Ga (>22at%) revealed austenitic structure at room temperature. Homogenization followed by annealing treatment has shown reduction in segregation, grain growth and formation of ordered structure and consequently its influence on final properties is explained. |
| Proceedings Inclusion? |
Definite: A CD-only volume |