On the microstructure evolution of AA6061 with pulsed laser powder bed fusion
This study uncovers new opportunities for microstructure engineering of AA6061 using pulsed lasers in powder bed fusion. Experimental analysis reveals that pulsed lasers allow for extensive control of grain sizes. Lower frequencies or duty cycles induce remelting cycles that promote finer grains and...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2025-05-01
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| Series: | Materials Research Letters |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/21663831.2025.2466782 |
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| _version_ | 1850256159960727552 |
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| author | Sivaji Karna Lang Yuan Tianyu Zhang Andrew J. Gross Daniel Morrall Timothy Krentz Dale Hitchcock |
| author_facet | Sivaji Karna Lang Yuan Tianyu Zhang Andrew J. Gross Daniel Morrall Timothy Krentz Dale Hitchcock |
| author_sort | Sivaji Karna |
| collection | DOAJ |
| description | This study uncovers new opportunities for microstructure engineering of AA6061 using pulsed lasers in powder bed fusion. Experimental analysis reveals that pulsed lasers allow for extensive control of grain sizes. Lower frequencies or duty cycles induce remelting cycles that promote finer grains and homogenized subgrain structures, while higher frequencies with high duty cycles sustain elevated temperatures, reducing cooling rates and resulting in coarser grains. Pulsing strategy is demonstrated as facile route for tailoring microstructure through enhanced control over solidification. These findings present an effective means in additive manufacturing by linking pulsed laser dynamics to microstructure evolution towards desired material properties. |
| format | Article |
| id | doaj-art-019ece6a907246708bd272123df612b4 |
| institution | OA Journals |
| issn | 2166-3831 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Materials Research Letters |
| spelling | doaj-art-019ece6a907246708bd272123df612b42025-08-20T01:56:42ZengTaylor & Francis GroupMaterials Research Letters2166-38312025-05-0113543944710.1080/21663831.2025.2466782On the microstructure evolution of AA6061 with pulsed laser powder bed fusionSivaji Karna0Lang Yuan1Tianyu Zhang2Andrew J. Gross3Daniel Morrall4Timothy Krentz5Dale Hitchcock6Department of Mechanical Engineering, University of South Carolina, Columbia, SC, USADepartment of Mechanical Engineering, University of South Carolina, Columbia, SC, USADepartment of Mechanical Engineering, University of South Carolina, Columbia, SC, USADepartment of Mechanical Engineering, University of South Carolina, Columbia, SC, USATritium Technology Division, Savannah River National Laboratory, Aiken, SC, USATritium Technology Division, Savannah River National Laboratory, Aiken, SC, USATritium Technology Division, Savannah River National Laboratory, Aiken, SC, USAThis study uncovers new opportunities for microstructure engineering of AA6061 using pulsed lasers in powder bed fusion. Experimental analysis reveals that pulsed lasers allow for extensive control of grain sizes. Lower frequencies or duty cycles induce remelting cycles that promote finer grains and homogenized subgrain structures, while higher frequencies with high duty cycles sustain elevated temperatures, reducing cooling rates and resulting in coarser grains. Pulsing strategy is demonstrated as facile route for tailoring microstructure through enhanced control over solidification. These findings present an effective means in additive manufacturing by linking pulsed laser dynamics to microstructure evolution towards desired material properties.https://www.tandfonline.com/doi/10.1080/21663831.2025.2466782Additive manufacturinggrain refinementgrain coarseninghomogenizationsubgrains |
| spellingShingle | Sivaji Karna Lang Yuan Tianyu Zhang Andrew J. Gross Daniel Morrall Timothy Krentz Dale Hitchcock On the microstructure evolution of AA6061 with pulsed laser powder bed fusion Materials Research Letters Additive manufacturing grain refinement grain coarsening homogenization subgrains |
| title | On the microstructure evolution of AA6061 with pulsed laser powder bed fusion |
| title_full | On the microstructure evolution of AA6061 with pulsed laser powder bed fusion |
| title_fullStr | On the microstructure evolution of AA6061 with pulsed laser powder bed fusion |
| title_full_unstemmed | On the microstructure evolution of AA6061 with pulsed laser powder bed fusion |
| title_short | On the microstructure evolution of AA6061 with pulsed laser powder bed fusion |
| title_sort | on the microstructure evolution of aa6061 with pulsed laser powder bed fusion |
| topic | Additive manufacturing grain refinement grain coarsening homogenization subgrains |
| url | https://www.tandfonline.com/doi/10.1080/21663831.2025.2466782 |
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