Influence of heat input on the appearance, microstructure and microhardness of pulsed gas metal arc welded Al alloy weldment
In order to achieve high-quality welding of aluminum alloys, reasonable control of welding heat input is critical. Different combinations of welding parameters can achieve the same heat input, however, the relevant research results has not been reported. In this paper, the pulsed-gas metal arc weldi...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-11-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785422014351 |
| _version_ | 1797980197956354048 |
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| author | Chao Chen Guorui Sun Wenbo Du Yue Li Chenglei Fan Huijing Zhang |
| author_facet | Chao Chen Guorui Sun Wenbo Du Yue Li Chenglei Fan Huijing Zhang |
| author_sort | Chao Chen |
| collection | DOAJ |
| description | In order to achieve high-quality welding of aluminum alloys, reasonable control of welding heat input is critical. Different combinations of welding parameters can achieve the same heat input, however, the relevant research results has not been reported. In this paper, the pulsed-gas metal arc welding (P-GMAW) of 4047 Al–Si alloy was used as the research object. Combining design of welding current, welding voltage and welding speed, three sets of welding parameters with the same heat input were obtained, and welding experiments were carried out on them. The formation, microstructure and mechanical properties of weld bead were analyzed. The results show that under the same heat input, the effect of the welding current and voltage on the weld bead is remarkable. With the increase of the two, the penetration, width and spreadability of the weld bead increased, and the low melting point precipitates became more aggregated. At the same time, the average hardness of the weld increased from 98.27 HV to 104.4 HV, i.e., 6.2%. |
| first_indexed | 2024-04-11T05:51:43Z |
| format | Article |
| id | doaj.art-07626b7ed291454297ba63b31fae6723 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-11T05:51:43Z |
| publishDate | 2022-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-07626b7ed291454297ba63b31fae67232022-12-22T04:42:03ZengElsevierJournal of Materials Research and Technology2238-78542022-11-0121121130Influence of heat input on the appearance, microstructure and microhardness of pulsed gas metal arc welded Al alloy weldmentChao Chen0Guorui Sun1Wenbo Du2Yue Li3Chenglei Fan4Huijing Zhang5College of Mechanical and Electrical Engineering, Northeast Forestry University, Harbin 150040, China; State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin, 150001, ChinaCollege of Mechanical and Electrical Engineering, Northeast Forestry University, Harbin 150040, ChinaNational Key Laboratory for Remanufacturing, Army Academy of Armored Forces, Beijing, 100072, ChinaBeijing Institute of Radio Measurement, Beijing 100039, ChinaState Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin, 150001, ChinaCollege of Mechanical and Electrical Engineering, Northeast Forestry University, Harbin 150040, China; Corresponding author.In order to achieve high-quality welding of aluminum alloys, reasonable control of welding heat input is critical. Different combinations of welding parameters can achieve the same heat input, however, the relevant research results has not been reported. In this paper, the pulsed-gas metal arc welding (P-GMAW) of 4047 Al–Si alloy was used as the research object. Combining design of welding current, welding voltage and welding speed, three sets of welding parameters with the same heat input were obtained, and welding experiments were carried out on them. The formation, microstructure and mechanical properties of weld bead were analyzed. The results show that under the same heat input, the effect of the welding current and voltage on the weld bead is remarkable. With the increase of the two, the penetration, width and spreadability of the weld bead increased, and the low melting point precipitates became more aggregated. At the same time, the average hardness of the weld increased from 98.27 HV to 104.4 HV, i.e., 6.2%.http://www.sciencedirect.com/science/article/pii/S2238785422014351Heat inputAluminum alloyPulsed gas metal arc weldingMicrostructureMicrohardness |
| spellingShingle | Chao Chen Guorui Sun Wenbo Du Yue Li Chenglei Fan Huijing Zhang Influence of heat input on the appearance, microstructure and microhardness of pulsed gas metal arc welded Al alloy weldment Journal of Materials Research and Technology Heat input Aluminum alloy Pulsed gas metal arc welding Microstructure Microhardness |
| title | Influence of heat input on the appearance, microstructure and microhardness of pulsed gas metal arc welded Al alloy weldment |
| title_full | Influence of heat input on the appearance, microstructure and microhardness of pulsed gas metal arc welded Al alloy weldment |
| title_fullStr | Influence of heat input on the appearance, microstructure and microhardness of pulsed gas metal arc welded Al alloy weldment |
| title_full_unstemmed | Influence of heat input on the appearance, microstructure and microhardness of pulsed gas metal arc welded Al alloy weldment |
| title_short | Influence of heat input on the appearance, microstructure and microhardness of pulsed gas metal arc welded Al alloy weldment |
| title_sort | influence of heat input on the appearance microstructure and microhardness of pulsed gas metal arc welded al alloy weldment |
| topic | Heat input Aluminum alloy Pulsed gas metal arc welding Microstructure Microhardness |
| url | http://www.sciencedirect.com/science/article/pii/S2238785422014351 |
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