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Effect of Ti addition on thermal stability and phase evolution of super-invar based yttria added ODS alloys developed by mechanical alloying and spark plasma sintering by Arpan Arora; Suhrit Mula is a Materials Science article available to read on EtoBox.
What is Effect of Ti addition on thermal stability and phase evolution of super-invar based yttria added ODS alloys developed by mechanical alloying and spark plasma sintering about?
In the present study, Ti and Y2O3 nano-powders were introduced in a base composition of Fe-42 wt% Ni invar alloy to investigate their effects on phase evolution and its thermal stability. Three compositions, namely, Fe-42Ni-2Y2O3-0.3Ti, Fe-42Ni-2Y2O3-1Ti, Fe-42Ni-2Y2O3-2Ti (all in wt%), were mechanically alloyed through high energy SPEX8000M ball mill with a varying amount of Ti (0.3, 1, and 2 wt%). The milled compositions were consolidated by spark plasma sintering at 1000 °C at 60 MPa pressure with a holding time of 5 min. The addition of Ti and Y2O3 nano-powders in the Fe-Ni metal matrix is expected to develop nanoclusters precipitates, thereby increasing its strength by Orowan strengthening. Consequently, submicron size grain was found to form in the case of 2 wt% Ti alloy (205 nm) as compared to 348 nm size grains in 0.3 wt% Ti alloy. The corresponding composition dictated higher nanoindentation hardness values (4.4 GPa and 5.2 GPa, respectively), which also validated Hall-Petch relationship. The Y2O3 nanoparticles break down into Y and O atoms through mechanical alloying and consequently dissolve into Fe-Ni metal matrix to form a supersaturated solid solution first. The addit
Who reads Effect of Ti addition on thermal stability and phase evolution of super-invar based yttria added ODS alloys developed by mechanical alloying and spark plasma sintering?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- Arpan Arora; Suhrit Mula
- Publisher
- Elsevier BV
- Published
- 2022
- Language
- EN
- Field
- Materials Science (Physical Sciences)