Comprehensive microstructural evolution analysis of AA5083-H116 alloy welded joints using pulsed GMAW and 80Ar19He1O2 shielding gas
This study investigates the microstructural evolution of AA5083-H116 butt-welded joints produced by automated pulsed GMAW (GMAW-P) with an 80Ar-19He–1O2 shielding gas under varying heat inputs. Multiscale characterization techniques—including optical and scanning electron microscopy, EBSD, XRD, and...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-09-01
|
| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425019192 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849243697270489088 |
|---|---|
| author | Enrique Esteban Niebles-Nuñez Jimy Unfried-Silgado Jaime Elías Torres-Salcedo Conrado R.M. Afonso Antonio J. Ramírez |
| author_facet | Enrique Esteban Niebles-Nuñez Jimy Unfried-Silgado Jaime Elías Torres-Salcedo Conrado R.M. Afonso Antonio J. Ramírez |
| author_sort | Enrique Esteban Niebles-Nuñez |
| collection | DOAJ |
| description | This study investigates the microstructural evolution of AA5083-H116 butt-welded joints produced by automated pulsed GMAW (GMAW-P) with an 80Ar-19He–1O2 shielding gas under varying heat inputs. Multiscale characterization techniques—including optical and scanning electron microscopy, EBSD, XRD, and transmission electron microscopy (TEM) along with automated crystallographic mapping (ASTAR), were used to assess recrystallization, phase transformations, and grain growth. The coarse-grained zone (GGZ) exhibited complete recrystallization and abnormal grain growth (14.2–18.6 μm), with low misorientation (≈2°) and dominant low-angle boundaries (<7°). The mixed grain zone (MGZ) showed partial recrystallization and subgrains, while the fine-grained zone (GFZ) displayed incipient recrystallization (2°–10°) and residual substructures near the base metal. The Al-FCC matrix retained Mg in solid solution, with secondary phases (Al(Fe,Mn), Al(Fe,Mn,Cr) and nanoscale precipitates (Al3Mg2, Al6(Mn,Fe)) at grain boundaries. Results demonstrate that heat input critically governs microstructural stability, dictating recrystallization kinetics and precipitate distribution. These findings enable optimized welding parameters to enhance joint performance in demanding naval, aerospace, and automotive applications. |
| format | Article |
| id | doaj-art-cff8b655d52e4dc884fc6ad88a2e6bc4 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-cff8b655d52e4dc884fc6ad88a2e6bc42025-08-20T03:59:22ZengElsevierJournal of Materials Research and Technology2238-78542025-09-01381263127510.1016/j.jmrt.2025.07.261Comprehensive microstructural evolution analysis of AA5083-H116 alloy welded joints using pulsed GMAW and 80Ar19He1O2 shielding gasEnrique Esteban Niebles-Nuñez0Jimy Unfried-Silgado1Jaime Elías Torres-Salcedo2Conrado R.M. Afonso3Antonio J. Ramírez4Programa de Ingeniería Mecánica, Facultad de ingeniería, Grupo de investigación IMTEF, Universidad Autónoma del Caribe, Barranquilla, 080020, ColombiaDepartamento de Ingeniería Mecánica. Grupo de investigación ICT. Universidad de Córdoba, Montería, 230002, ColombiaPrograma de Doctorado en Ingeniería Mecánica, Universidad del Norte, Barranquilla, 081001, ColombiaDepartamento de Engenharia de Materiais (DEMa), Universidade Federal de São Carlos (UFSCar), 13.565-905, São Carlos, SP, Brazil; Corresponding author.Welding Engineering Program, The Ohio State University Columbus, Columbus, OH, USAThis study investigates the microstructural evolution of AA5083-H116 butt-welded joints produced by automated pulsed GMAW (GMAW-P) with an 80Ar-19He–1O2 shielding gas under varying heat inputs. Multiscale characterization techniques—including optical and scanning electron microscopy, EBSD, XRD, and transmission electron microscopy (TEM) along with automated crystallographic mapping (ASTAR), were used to assess recrystallization, phase transformations, and grain growth. The coarse-grained zone (GGZ) exhibited complete recrystallization and abnormal grain growth (14.2–18.6 μm), with low misorientation (≈2°) and dominant low-angle boundaries (<7°). The mixed grain zone (MGZ) showed partial recrystallization and subgrains, while the fine-grained zone (GFZ) displayed incipient recrystallization (2°–10°) and residual substructures near the base metal. The Al-FCC matrix retained Mg in solid solution, with secondary phases (Al(Fe,Mn), Al(Fe,Mn,Cr) and nanoscale precipitates (Al3Mg2, Al6(Mn,Fe)) at grain boundaries. Results demonstrate that heat input critically governs microstructural stability, dictating recrystallization kinetics and precipitate distribution. These findings enable optimized welding parameters to enhance joint performance in demanding naval, aerospace, and automotive applications.http://www.sciencedirect.com/science/article/pii/S2238785425019192AA5083-H116 welded jointsGMAW-PMicrostructural evolutionRecrystallization and grain growthIntermetallic precipitates |
| spellingShingle | Enrique Esteban Niebles-Nuñez Jimy Unfried-Silgado Jaime Elías Torres-Salcedo Conrado R.M. Afonso Antonio J. Ramírez Comprehensive microstructural evolution analysis of AA5083-H116 alloy welded joints using pulsed GMAW and 80Ar19He1O2 shielding gas Journal of Materials Research and Technology AA5083-H116 welded joints GMAW-P Microstructural evolution Recrystallization and grain growth Intermetallic precipitates |
| title | Comprehensive microstructural evolution analysis of AA5083-H116 alloy welded joints using pulsed GMAW and 80Ar19He1O2 shielding gas |
| title_full | Comprehensive microstructural evolution analysis of AA5083-H116 alloy welded joints using pulsed GMAW and 80Ar19He1O2 shielding gas |
| title_fullStr | Comprehensive microstructural evolution analysis of AA5083-H116 alloy welded joints using pulsed GMAW and 80Ar19He1O2 shielding gas |
| title_full_unstemmed | Comprehensive microstructural evolution analysis of AA5083-H116 alloy welded joints using pulsed GMAW and 80Ar19He1O2 shielding gas |
| title_short | Comprehensive microstructural evolution analysis of AA5083-H116 alloy welded joints using pulsed GMAW and 80Ar19He1O2 shielding gas |
| title_sort | comprehensive microstructural evolution analysis of aa5083 h116 alloy welded joints using pulsed gmaw and 80ar19he1o2 shielding gas |
| topic | AA5083-H116 welded joints GMAW-P Microstructural evolution Recrystallization and grain growth Intermetallic precipitates |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425019192 |
| work_keys_str_mv | AT enriqueestebannieblesnunez comprehensivemicrostructuralevolutionanalysisofaa5083h116alloyweldedjointsusingpulsedgmawand80ar19he1o2shieldinggas AT jimyunfriedsilgado comprehensivemicrostructuralevolutionanalysisofaa5083h116alloyweldedjointsusingpulsedgmawand80ar19he1o2shieldinggas AT jaimeeliastorressalcedo comprehensivemicrostructuralevolutionanalysisofaa5083h116alloyweldedjointsusingpulsedgmawand80ar19he1o2shieldinggas AT conradormafonso comprehensivemicrostructuralevolutionanalysisofaa5083h116alloyweldedjointsusingpulsedgmawand80ar19he1o2shieldinggas AT antoniojramirez comprehensivemicrostructuralevolutionanalysisofaa5083h116alloyweldedjointsusingpulsedgmawand80ar19he1o2shieldinggas |