Characterization of pulsed-tungsten inert gas (PTIG) welding on AA5754-H111 alloy: mechanical properties and microstructural analysis
Aluminium and its alloys were widely used in engineering because they are lightweight, strong, and resistant to corrosion. However, using standard arc welding techniques can be difficult when dealing with such materials. Pulsed-Tungsten Inert Gas (PTIG) welding is being researched as a potential sol...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/ad0761 |
| _version_ | 1797635673424920576 |
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| author | G Tamil Kumaran K S Jayakumar A Amala Mithin Minther Singh |
| author_facet | G Tamil Kumaran K S Jayakumar A Amala Mithin Minther Singh |
| author_sort | G Tamil Kumaran |
| collection | DOAJ |
| description | Aluminium and its alloys were widely used in engineering because they are lightweight, strong, and resistant to corrosion. However, using standard arc welding techniques can be difficult when dealing with such materials. Pulsed-Tungsten Inert Gas (PTIG) welding is being researched as a potential solution to this problem. This study is the first to investigate the use of the straightforward and intuitive PTIG technique on the ubiquitous AA5754 wrought aluminium alloy. Welded samples were supplied for examination of mechanical parameters such as surface hardness and strength under impact and tensile loading. The results of a statistical analysis of the mechanical characterization of a PTIG-welded permanent joint fabricated from AA5754 aluminium alloy were presented and discussed. The heat-affected zone (HAZ) on the AA5754 retracting side of the weld had a hardness of 50–70 Hv0.5, while the HAZ on the AA5756 side had a hardness of 90–100 Hv0.5, as measured by testing on the perfect weld specimen. Samples taken from different parts of the weldment all showed that the HAZ is the softest and weakest. The shattered surface of the welded sample consisted of flat facets and quasi-cleavage patterns, as revealed by scanning electron microscopy. Analysis of the HAZ microstructure revealed widespread dissolution of Mg2Si precipitates in the AA5754-H111. |
| first_indexed | 2024-03-11T12:24:42Z |
| format | Article |
| id | doaj.art-663acdc7a15b440e879a12e4bee03b2b |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-11T12:24:42Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-663acdc7a15b440e879a12e4bee03b2b2023-11-06T11:56:55ZengIOP PublishingMaterials Research Express2053-15912023-01-01101111650410.1088/2053-1591/ad0761Characterization of pulsed-tungsten inert gas (PTIG) welding on AA5754-H111 alloy: mechanical properties and microstructural analysisG Tamil Kumaran0https://orcid.org/0009-0005-6551-3637K S Jayakumar1A Amala Mithin Minther Singh2https://orcid.org/0000-0001-6528-1518Department of Mechanical Engineering, DMI College of Engineering , Chennai, IndiaDepartment of Mechanical Engineering, Sri Sivasubramaniya Nadar College of Engineering , Chennai, IndiaDepartment of Mechanical Engineering, DMI College of Engineering , Chennai, IndiaAluminium and its alloys were widely used in engineering because they are lightweight, strong, and resistant to corrosion. However, using standard arc welding techniques can be difficult when dealing with such materials. Pulsed-Tungsten Inert Gas (PTIG) welding is being researched as a potential solution to this problem. This study is the first to investigate the use of the straightforward and intuitive PTIG technique on the ubiquitous AA5754 wrought aluminium alloy. Welded samples were supplied for examination of mechanical parameters such as surface hardness and strength under impact and tensile loading. The results of a statistical analysis of the mechanical characterization of a PTIG-welded permanent joint fabricated from AA5754 aluminium alloy were presented and discussed. The heat-affected zone (HAZ) on the AA5754 retracting side of the weld had a hardness of 50–70 Hv0.5, while the HAZ on the AA5756 side had a hardness of 90–100 Hv0.5, as measured by testing on the perfect weld specimen. Samples taken from different parts of the weldment all showed that the HAZ is the softest and weakest. The shattered surface of the welded sample consisted of flat facets and quasi-cleavage patterns, as revealed by scanning electron microscopy. Analysis of the HAZ microstructure revealed widespread dissolution of Mg2Si precipitates in the AA5754-H111.https://doi.org/10.1088/2053-1591/ad0761pulsed-tungsten inert gas weldingaluminium alloytensile strengthhardnessSEM |
| spellingShingle | G Tamil Kumaran K S Jayakumar A Amala Mithin Minther Singh Characterization of pulsed-tungsten inert gas (PTIG) welding on AA5754-H111 alloy: mechanical properties and microstructural analysis Materials Research Express pulsed-tungsten inert gas welding aluminium alloy tensile strength hardness SEM |
| title | Characterization of pulsed-tungsten inert gas (PTIG) welding on AA5754-H111 alloy: mechanical properties and microstructural analysis |
| title_full | Characterization of pulsed-tungsten inert gas (PTIG) welding on AA5754-H111 alloy: mechanical properties and microstructural analysis |
| title_fullStr | Characterization of pulsed-tungsten inert gas (PTIG) welding on AA5754-H111 alloy: mechanical properties and microstructural analysis |
| title_full_unstemmed | Characterization of pulsed-tungsten inert gas (PTIG) welding on AA5754-H111 alloy: mechanical properties and microstructural analysis |
| title_short | Characterization of pulsed-tungsten inert gas (PTIG) welding on AA5754-H111 alloy: mechanical properties and microstructural analysis |
| title_sort | characterization of pulsed tungsten inert gas ptig welding on aa5754 h111 alloy mechanical properties and microstructural analysis |
| topic | pulsed-tungsten inert gas welding aluminium alloy tensile strength hardness SEM |
| url | https://doi.org/10.1088/2053-1591/ad0761 |
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