Microstructure of Ti/Al multilayer foils ignited with electric current
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Łukasz Maj
Abstract
Magnetron sputtered Ti/Al freestanding multilayer foils were treated with an electric current pulse of 0.5 A or 4 A for ∼1 s in order to initiate a self-sustaining high-temperature synthesis. Scanning electron microscopy observations showed that the sample treated with 0.5 A is characterized by the presence of periodic rippled bands, while the 4 A one has a nearly unaffected shape. Transmission electron microscopy experiments revealed that the microstructure of Ti/Al foil ignited with 0.5 A consists of large equiaxed grains of γ-TiAl phase and alternating plates of γ-TiAl + α2-Ti3Al phases, carrying vestiges of their initial multilayer character, while the 4 A treatment resulted in the formation of a duplex microstructure.
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Articles in the same Issue
- Contents
- Contents
- Editorial
- XVI International Conference on Electron Microscopy
- Original Contributions
- Application of analytical electron microscopy and FIB-SEM tomographic technique for phase analysis in as-cast Allvac 718Plus superalloy
- Microstructure and properties of laser interference crystallized amorphous FeSiB ribbon
- Analysis of amorphous regions in severely marformed NiTi shape memory alloy
- Structure of MgLiAl alloys after various routes of severe plastic deformation studied by TEM
- Microstructure and selected mechanical and electrical property analysis of Sr-doped LaCoO3 perovskite thin films deposited by the PLD technique
- Microstructure of an oxide scale formed on ATI 718Plus superalloy during oxidation at 850 °C characterised using analytical electron microscopy
- Effect of powder morphology on the microstructure and properties of cold sprayed Ni coatings
- Microstructure of Ti/Al multilayer foils ignited with electric current
- Evolution of γ′ morphology and γ/γ′ lattice parameter misfit in a nickel-based superalloy during non-equilibrium cooling
- Effect of heat treatment on the precipitation hardening in FeNiCoAlTaB shape memory alloys
- The structure and formation mechanism of FeS2/Fe3S4/S8 nanocomposite synthesized using spherical shaped Fe3O4 nanoparticles as the precursor
- Short Communications
- Characterization of Inconel 625 surface layer modified by laser shock processing
- DGM News
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