About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Advances in Powder and Ceramic Materials Science
|
Presentation Title |
Effect of Y2O3 and Al Addition on Mechanical Properties and Micrographic Features of Invar Based ODS Alloy Prepared by Mechanical Alloying + Spark Plasma Sintering |
Author(s) |
Arpan Arora, Suhrit Mula |
On-Site Speaker (Planned) |
Arpan Arora |
Abstract Scope |
In the present study, mechanical properties and micrographic features were studied on three compositions: Fe-42Ni-2Zr, Fe-42Ni-2Zr-2Y2O3, and Fe-42Ni-2Zr-2Y2O3-2Al. All the three compositions were prepared using mechanical alloying via high energy ball mill and consolidated through spark plasma sintering at 1100 °C, with an applied load of 60 MPa. All the sintered samples were mirror-polished using colloidal silica, and EBSD (Electron Backscatter Diffraction) scan was conducted to understand the micrographic features and micro-strain using Kernel Average Misorientation. micrographic features were correlated with mechanical properties using Vickers hardness. Diffusional annealing was conducted on the sintered sample at a temperature of 1200 °C under an argon atmosphere to understand the grain growth mechanism and thermal stability. XRD was conducted to understand phase formation, microstrain, and change in crystallite size in sintered sample with respect to annealed sample. Orowan strengthening and Zenner pinning played a vital role in high-temperature thermal stability and grain refining. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Temperature Materials, Iron and Steel, Mechanical Properties |