Investigations on mechanical behavior of AA2014-T6 weldments developed using CMT welding: As-weld and post weld heat treatment conditions
This research work aims to investigate the tensile properties, micro-hardness and microstructural changes of AA2014-T6 cold metal transfer (CMT) weldments in as-weld and post-weld heat treatment (PWHT) conditions. X-ray radiography test is conducted to inspect the internal defects and confirmed that...
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| Language: | English |
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Elsevier
2025-03-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425000687 |
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| author | Balram Yelamasetti B Tulasi Lakshmi Devi N Santhi Sree Sai Vempati Tushar Sonar Ashish Kumar C. Rakesh Ankit Sharma Mushtaq Ahmad Ansari |
| author_facet | Balram Yelamasetti B Tulasi Lakshmi Devi N Santhi Sree Sai Vempati Tushar Sonar Ashish Kumar C. Rakesh Ankit Sharma Mushtaq Ahmad Ansari |
| author_sort | Balram Yelamasetti |
| collection | DOAJ |
| description | This research work aims to investigate the tensile properties, micro-hardness and microstructural changes of AA2014-T6 cold metal transfer (CMT) weldments in as-weld and post-weld heat treatment (PWHT) conditions. X-ray radiography test is conducted to inspect the internal defects and confirmed that the welded structures were free from macro/micro defects. The welded structures are tested to evaluate the tensile properties, micro-hardness and microstructural changes in both the conditions. The ultimate tensile strength (UTS) of CMT1 and CMT2 is observed as 316 and 241 MPa, respectively in as-weld condition whereas the UTS value of CMT1 & CMT2 is 376 and 325 MPa, respectively after heat treatment. The welding strength is improved by 18.9 and 34.8% in CMT1 & CMT2 respectively when the samples were subjected to heat treatment process. The average hardness value of 105 and 106 HV is observed in CMT1 & CMT2, respectively in as-weld condition. Whereas, the hardness number is increased to 128 and 121 HV in CMT1 & CMT2, respectively when the samples were subjected to heat-treatment. After PWHT, the weld zone is more homogeneous than when it was first welded, indicating that PWHT has been effective in reducing thermal stresses and promoting the formation of a more homogeneous microstructure. |
| format | Article |
| id | doaj-art-eb74285e70764173b4605e37c1e560b3 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-eb74285e70764173b4605e37c1e560b32025-01-22T05:42:34ZengElsevierJournal of Materials Research and Technology2238-78542025-03-013514091418Investigations on mechanical behavior of AA2014-T6 weldments developed using CMT welding: As-weld and post weld heat treatment conditionsBalram Yelamasetti0B Tulasi Lakshmi Devi1N Santhi Sree2Sai Vempati3Tushar Sonar4Ashish Kumar5C. Rakesh6Ankit Sharma7Mushtaq Ahmad Ansari8Department of Mechanical Engineering, MLR Institute of Technology, Hyderabad, 500043, India; Corresponding author.Department of Mathematics, Koneru Lakshmaiah Education Foundation, Hyderabad, 500043, Telangana, IndiaDepartment of Mechanical Engineering, Matrusri Engineering College, Hyderabad, 500059, IndiaUniversity of A Coruña, Campus Industrial de Ferrol, CITENI, SpainCentre for Sustainable Materials and Surface Metamorphosis, Chennai Institute of Technology, Chennai 600069, Tamil Nadu, IndiaDivision of Research and Development, Lovely Professional University, Phagwara, India; Corresponding author.Department of Mechanical Engineering, New Horizon College of Engineering, Bangalore, IndiaChitkara University Institute of Engineering & Technology, Chitkara University, Punjab, 140401, IndiaDepartment of Pharmacology and Toxicology, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh, 11451, Saudi ArabiaThis research work aims to investigate the tensile properties, micro-hardness and microstructural changes of AA2014-T6 cold metal transfer (CMT) weldments in as-weld and post-weld heat treatment (PWHT) conditions. X-ray radiography test is conducted to inspect the internal defects and confirmed that the welded structures were free from macro/micro defects. The welded structures are tested to evaluate the tensile properties, micro-hardness and microstructural changes in both the conditions. The ultimate tensile strength (UTS) of CMT1 and CMT2 is observed as 316 and 241 MPa, respectively in as-weld condition whereas the UTS value of CMT1 & CMT2 is 376 and 325 MPa, respectively after heat treatment. The welding strength is improved by 18.9 and 34.8% in CMT1 & CMT2 respectively when the samples were subjected to heat treatment process. The average hardness value of 105 and 106 HV is observed in CMT1 & CMT2, respectively in as-weld condition. Whereas, the hardness number is increased to 128 and 121 HV in CMT1 & CMT2, respectively when the samples were subjected to heat-treatment. After PWHT, the weld zone is more homogeneous than when it was first welded, indicating that PWHT has been effective in reducing thermal stresses and promoting the formation of a more homogeneous microstructure.http://www.sciencedirect.com/science/article/pii/S2238785425000687AA2014-T6CMT welding techniqueER2319Mechanical propertiesMicrostructural changesAs-weld & PWHT conditions |
| spellingShingle | Balram Yelamasetti B Tulasi Lakshmi Devi N Santhi Sree Sai Vempati Tushar Sonar Ashish Kumar C. Rakesh Ankit Sharma Mushtaq Ahmad Ansari Investigations on mechanical behavior of AA2014-T6 weldments developed using CMT welding: As-weld and post weld heat treatment conditions Journal of Materials Research and Technology AA2014-T6 CMT welding technique ER2319 Mechanical properties Microstructural changes As-weld & PWHT conditions |
| title | Investigations on mechanical behavior of AA2014-T6 weldments developed using CMT welding: As-weld and post weld heat treatment conditions |
| title_full | Investigations on mechanical behavior of AA2014-T6 weldments developed using CMT welding: As-weld and post weld heat treatment conditions |
| title_fullStr | Investigations on mechanical behavior of AA2014-T6 weldments developed using CMT welding: As-weld and post weld heat treatment conditions |
| title_full_unstemmed | Investigations on mechanical behavior of AA2014-T6 weldments developed using CMT welding: As-weld and post weld heat treatment conditions |
| title_short | Investigations on mechanical behavior of AA2014-T6 weldments developed using CMT welding: As-weld and post weld heat treatment conditions |
| title_sort | investigations on mechanical behavior of aa2014 t6 weldments developed using cmt welding as weld and post weld heat treatment conditions |
| topic | AA2014-T6 CMT welding technique ER2319 Mechanical properties Microstructural changes As-weld & PWHT conditions |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425000687 |
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