Sequential Process of Diffusion Bonding and Annealing on Dissimilar Welding of Mg/Al Alloys
In this study, pressure supplying device based on thermal expansion and vacuum diffusion bonding method were used to weld magnesium alloy (AZ91) and aluminum alloy (6061). To enhance the microstructure and bonding properties of the welded Mg/Al alloys, the annealing process was continuously implemen...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/6691422 |
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| author | Yunlong Ding Shixue Zhang Bi Wu Jinshuang Hao Yan Chen Dongying Ju |
| author_facet | Yunlong Ding Shixue Zhang Bi Wu Jinshuang Hao Yan Chen Dongying Ju |
| author_sort | Yunlong Ding |
| collection | DOAJ |
| description | In this study, pressure supplying device based on thermal expansion and vacuum diffusion bonding method were used to weld magnesium alloy (AZ91) and aluminum alloy (6061). To enhance the microstructure and bonding properties of the welded Mg/Al alloys, the annealing process was continuously implemented on the composite specimens. Elemental analysis and structural observation/compound identification were conducted using an electron probe microanalyzer and a scanning electron microscope, respectively. For further assessment of the diffusion zone, microstructural examination was carried out using a transmission electron microscope. Furthermore, tensile strength and hardness values were also measured. The results showed that the diffusion zone widens with increasing annealing temperatures, but it changed obviously when the annealing temperature was 300°C. Intermetallic compounds in the diffusion zone were identified as Al2Mg and Al12Mg17, the microstructure and elemental composition were uniformly distributed, and tensile strength was the largest for the specimen annealed at 250°C. A possible reason for this could be that 250°C is nearly similar to the recrystallization temperature of Mg/Al alloys. Therefore, 250°C was determined to be the most suitable annealing temperature. In addition, the thermal expansion pressure supplying process was appropriate for the diffusion bonding of Mg/Al alloys. |
| format | Article |
| id | doaj-art-77742f5cee6d43fda65b7dc03ddbef0e |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-77742f5cee6d43fda65b7dc03ddbef0e2025-02-03T06:01:16ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422021-01-01202110.1155/2021/66914226691422Sequential Process of Diffusion Bonding and Annealing on Dissimilar Welding of Mg/Al AlloysYunlong Ding0Shixue Zhang1Bi Wu2Jinshuang Hao3Yan Chen4Dongying Ju5School of Mechanical Engineering and Automation, University of Science and Technology Liaoning, No. 185 Qianshan Middle Road, Lishan District, Anshan 114051, ChinaSchool of Mechanical Engineering and Automation, University of Science and Technology Liaoning, No. 185 Qianshan Middle Road, Lishan District, Anshan 114051, ChinaSchool of Mechanical Engineering and Automation, University of Science and Technology Liaoning, No. 185 Qianshan Middle Road, Lishan District, Anshan 114051, ChinaSchool of Mechanical Engineering and Automation, University of Science and Technology Liaoning, No. 185 Qianshan Middle Road, Lishan District, Anshan 114051, ChinaSchool of Mechanical Engineering and Automation, University of Science and Technology Liaoning, No. 185 Qianshan Middle Road, Lishan District, Anshan 114051, ChinaDepartment of Material Science and Engineering, Saitama Institute of Technology, Fusaiji1690,Fukaya, Saitama 369-0293, JapanIn this study, pressure supplying device based on thermal expansion and vacuum diffusion bonding method were used to weld magnesium alloy (AZ91) and aluminum alloy (6061). To enhance the microstructure and bonding properties of the welded Mg/Al alloys, the annealing process was continuously implemented on the composite specimens. Elemental analysis and structural observation/compound identification were conducted using an electron probe microanalyzer and a scanning electron microscope, respectively. For further assessment of the diffusion zone, microstructural examination was carried out using a transmission electron microscope. Furthermore, tensile strength and hardness values were also measured. The results showed that the diffusion zone widens with increasing annealing temperatures, but it changed obviously when the annealing temperature was 300°C. Intermetallic compounds in the diffusion zone were identified as Al2Mg and Al12Mg17, the microstructure and elemental composition were uniformly distributed, and tensile strength was the largest for the specimen annealed at 250°C. A possible reason for this could be that 250°C is nearly similar to the recrystallization temperature of Mg/Al alloys. Therefore, 250°C was determined to be the most suitable annealing temperature. In addition, the thermal expansion pressure supplying process was appropriate for the diffusion bonding of Mg/Al alloys.http://dx.doi.org/10.1155/2021/6691422 |
| spellingShingle | Yunlong Ding Shixue Zhang Bi Wu Jinshuang Hao Yan Chen Dongying Ju Sequential Process of Diffusion Bonding and Annealing on Dissimilar Welding of Mg/Al Alloys Advances in Materials Science and Engineering |
| title | Sequential Process of Diffusion Bonding and Annealing on Dissimilar Welding of Mg/Al Alloys |
| title_full | Sequential Process of Diffusion Bonding and Annealing on Dissimilar Welding of Mg/Al Alloys |
| title_fullStr | Sequential Process of Diffusion Bonding and Annealing on Dissimilar Welding of Mg/Al Alloys |
| title_full_unstemmed | Sequential Process of Diffusion Bonding and Annealing on Dissimilar Welding of Mg/Al Alloys |
| title_short | Sequential Process of Diffusion Bonding and Annealing on Dissimilar Welding of Mg/Al Alloys |
| title_sort | sequential process of diffusion bonding and annealing on dissimilar welding of mg al alloys |
| url | http://dx.doi.org/10.1155/2021/6691422 |
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