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Mechanical properties of repair welds for aluminum alloy6082-T6 by pulsed MIG welding process |
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| รหัสดีโอไอ | |
| Creator | 1. Thet Htet Naing 2. Prapas Muangjunburee |
| Title | Mechanical properties of repair welds for aluminum alloy6082-T6 by pulsed MIG welding process |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2564 |
| Journal Title | Songklanakarin Journal of Science an Technology (SJST) |
| Journal Vol. | 43 |
| Journal No. | 6 |
| Page no. | 1694-1700 |
| Keyword | pulsed MIG welding, aluminum alloy 6082-T6, repair welds, porosity, mechanical properties |
| URL Website | https://rdo.psu.ac.th/sjst/index.php |
| ISSN | 0125-3395 |
| Abstract | The mechanical properties of repair welding of aluminum alloy 6082-T6 welded with 5356 filler metal were studiedusing pulsed metal inert gas (MIG) welding process at frequencies of 1.5 Hz and 5 Hz. The effect of pulse current frequencies ontheir mechanical properties of welded samples was investigated by analyzing macrostructure, microstructure, the density ofporosity, and mechanical tests such as tensile, bending and hardness tests. Experimental results showed that repeated heat inputand porosity in weld metal contributed to poor mechanical resistance. It was found that increasing the frequency has a beneficialeffect on reducing the amount of porosity as well as the size of pores in the welded samples, giving superior mechanicalproperties. The repair weld welded using high pulse current frequency provided higher tensile strength and superior bendingresistance, suggesting that the high pulsed MIG welding is preferable for repair welding of Al 6082-T6. |
