Laser patterning assisted devitrification and domain engineering of amorphous and nanocrystalline alloys
We have investigated laser-patterning and devitrification as a novel method to realize emergent properties in modified regions at the ribbon surface consisting of periodic localized laser spots thermally treated under rapid heating and cooling conditions. Fe-based amorphous ribbons were annealed for...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2022-03-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/9.0000314 |
| _version_ | 1818394267450605568 |
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| author | Ahmed Talaat David W. Greve Alex Leary Yuzhe Liu Jörg Wiezorek Paul R. Ohodnicki Jr. |
| author_facet | Ahmed Talaat David W. Greve Alex Leary Yuzhe Liu Jörg Wiezorek Paul R. Ohodnicki Jr. |
| author_sort | Ahmed Talaat |
| collection | DOAJ |
| description | We have investigated laser-patterning and devitrification as a novel method to realize emergent properties in modified regions at the ribbon surface consisting of periodic localized laser spots thermally treated under rapid heating and cooling conditions. Fe-based amorphous ribbons were annealed for systematically varied laser power. Extremely high heating and cooling rates on the order of 108-1010K/s have been estimated by finite element analysis simulations. Observations suggest surface melting followed by rapid solidification fast enough to quench and form an amorphous structure upon cooling. Diffusion of heat occurs from the laser irradiated surface region so that a finite volume of material surrounding this region rises in temperature above the crystallization temperature relevant for conventional isothermal annealing experiments. The underlying mechanism of laser annealing and consequences of heat transients involved are discussed in terms of impacts upon micro/nanostructure, residual stresses, and magnetic domain structure surrounding the laser irradiated region. The study illustrates the potential to exploit spatially optimized phase transformations in a scalable manufacturing process of amorphous and nanocrystalline alloys to locally access otherwise inaccessible extreme heating and cooling rates. |
| first_indexed | 2024-12-14T05:58:29Z |
| format | Article |
| id | doaj.art-a230a6ed955244cd984b3b3035959d93 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-14T05:58:29Z |
| publishDate | 2022-03-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-a230a6ed955244cd984b3b3035959d932022-12-21T23:14:31ZengAIP Publishing LLCAIP Advances2158-32262022-03-01123035313035313-710.1063/9.0000314Laser patterning assisted devitrification and domain engineering of amorphous and nanocrystalline alloysAhmed Talaat0David W. Greve1Alex Leary2Yuzhe Liu3Jörg Wiezorek4Paul R. Ohodnicki Jr.5Mechanical Engineering and Materials Science, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, USADWGreve Consulting, Sedona, Arizona 86351, USAMaterials and Structures Division, NASA Glenn Research Center, Cleveland, Ohio 44135, USAMechanical Engineering and Materials Science, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, USAMechanical Engineering and Materials Science, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, USAMechanical Engineering and Materials Science, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, USAWe have investigated laser-patterning and devitrification as a novel method to realize emergent properties in modified regions at the ribbon surface consisting of periodic localized laser spots thermally treated under rapid heating and cooling conditions. Fe-based amorphous ribbons were annealed for systematically varied laser power. Extremely high heating and cooling rates on the order of 108-1010K/s have been estimated by finite element analysis simulations. Observations suggest surface melting followed by rapid solidification fast enough to quench and form an amorphous structure upon cooling. Diffusion of heat occurs from the laser irradiated surface region so that a finite volume of material surrounding this region rises in temperature above the crystallization temperature relevant for conventional isothermal annealing experiments. The underlying mechanism of laser annealing and consequences of heat transients involved are discussed in terms of impacts upon micro/nanostructure, residual stresses, and magnetic domain structure surrounding the laser irradiated region. The study illustrates the potential to exploit spatially optimized phase transformations in a scalable manufacturing process of amorphous and nanocrystalline alloys to locally access otherwise inaccessible extreme heating and cooling rates.http://dx.doi.org/10.1063/9.0000314 |
| spellingShingle | Ahmed Talaat David W. Greve Alex Leary Yuzhe Liu Jörg Wiezorek Paul R. Ohodnicki Jr. Laser patterning assisted devitrification and domain engineering of amorphous and nanocrystalline alloys AIP Advances |
| title | Laser patterning assisted devitrification and domain engineering of amorphous and nanocrystalline alloys |
| title_full | Laser patterning assisted devitrification and domain engineering of amorphous and nanocrystalline alloys |
| title_fullStr | Laser patterning assisted devitrification and domain engineering of amorphous and nanocrystalline alloys |
| title_full_unstemmed | Laser patterning assisted devitrification and domain engineering of amorphous and nanocrystalline alloys |
| title_short | Laser patterning assisted devitrification and domain engineering of amorphous and nanocrystalline alloys |
| title_sort | laser patterning assisted devitrification and domain engineering of amorphous and nanocrystalline alloys |
| url | http://dx.doi.org/10.1063/9.0000314 |
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