Microstructure and mechanical properties of GTA-based wire arc additive manufactured AZ91D magnesium alloy
Wire arc additive manufacturing offers advantages in producing large metal structures. The current research on GTA-based wire arc additive manufacturing (GTA-WAAM) of magnesium alloys is focused on deformed magnesium alloys, mainly on the Mg-Al alloy system. However, there is little research on GTA-...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2024-08-01
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| Series: | Journal of Magnesium and Alloys |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213956722003024 |
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| author | Xiaoyu Cai Fukang Chen Bolun Dong Sanbao Lin Chunli Yang |
| author_facet | Xiaoyu Cai Fukang Chen Bolun Dong Sanbao Lin Chunli Yang |
| author_sort | Xiaoyu Cai |
| collection | DOAJ |
| description | Wire arc additive manufacturing offers advantages in producing large metal structures. The current research on GTA-based wire arc additive manufacturing (GTA-WAAM) of magnesium alloys is focused on deformed magnesium alloys, mainly on the Mg-Al alloy system. However, there is little research on GTA-WAAM for casting magnesium alloy. This study investigates the microstructural characteristics and mechanical properties of AZ91D magnesium alloy (AZ91D-Mg) deposited by GTA-WAAM. Single-pass multilayer thin-walled components were successfully fabricated. The results show that equiaxed grains dominate the microstructure of the deposited samples. During the remelting process, the precipitated phases dissolve into the matrix, and they precipitate and grow from the matrix under the thermal effect of the subsequent thermal cycle. The mechanical properties in the vertical and horizontal directions are similar, showing higher overall mechanical properties than the casting parts. The average yield strength is 110.5 MPa, the ultimate tensile strength is 243.6 MPa, and the elongation is 11.7%. The overall hardness distribution in the deposited sample is relatively uniform, and the average microhardness is 59.6 HV0.2. |
| format | Article |
| id | doaj-art-bee919b493db4f0f871021c78b1ddb71 |
| institution | OA Journals |
| issn | 2213-9567 |
| language | English |
| publishDate | 2024-08-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Magnesium and Alloys |
| spelling | doaj-art-bee919b493db4f0f871021c78b1ddb712025-08-20T01:54:45ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672024-08-011283180319210.1016/j.jma.2022.11.018Microstructure and mechanical properties of GTA-based wire arc additive manufactured AZ91D magnesium alloyXiaoyu Cai0Fukang Chen1Bolun Dong2Sanbao Lin3Chunli Yang4State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, ChinaState Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, ChinaCorresponding authors.; State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, ChinaCorresponding authors.; State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, ChinaState Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, ChinaWire arc additive manufacturing offers advantages in producing large metal structures. The current research on GTA-based wire arc additive manufacturing (GTA-WAAM) of magnesium alloys is focused on deformed magnesium alloys, mainly on the Mg-Al alloy system. However, there is little research on GTA-WAAM for casting magnesium alloy. This study investigates the microstructural characteristics and mechanical properties of AZ91D magnesium alloy (AZ91D-Mg) deposited by GTA-WAAM. Single-pass multilayer thin-walled components were successfully fabricated. The results show that equiaxed grains dominate the microstructure of the deposited samples. During the remelting process, the precipitated phases dissolve into the matrix, and they precipitate and grow from the matrix under the thermal effect of the subsequent thermal cycle. The mechanical properties in the vertical and horizontal directions are similar, showing higher overall mechanical properties than the casting parts. The average yield strength is 110.5 MPa, the ultimate tensile strength is 243.6 MPa, and the elongation is 11.7%. The overall hardness distribution in the deposited sample is relatively uniform, and the average microhardness is 59.6 HV0.2.http://www.sciencedirect.com/science/article/pii/S2213956722003024GTA Additive manufacturingAZ91D magnesium alloyMicrostructureMechanical properties |
| spellingShingle | Xiaoyu Cai Fukang Chen Bolun Dong Sanbao Lin Chunli Yang Microstructure and mechanical properties of GTA-based wire arc additive manufactured AZ91D magnesium alloy Journal of Magnesium and Alloys GTA Additive manufacturing AZ91D magnesium alloy Microstructure Mechanical properties |
| title | Microstructure and mechanical properties of GTA-based wire arc additive manufactured AZ91D magnesium alloy |
| title_full | Microstructure and mechanical properties of GTA-based wire arc additive manufactured AZ91D magnesium alloy |
| title_fullStr | Microstructure and mechanical properties of GTA-based wire arc additive manufactured AZ91D magnesium alloy |
| title_full_unstemmed | Microstructure and mechanical properties of GTA-based wire arc additive manufactured AZ91D magnesium alloy |
| title_short | Microstructure and mechanical properties of GTA-based wire arc additive manufactured AZ91D magnesium alloy |
| title_sort | microstructure and mechanical properties of gta based wire arc additive manufactured az91d magnesium alloy |
| topic | GTA Additive manufacturing AZ91D magnesium alloy Microstructure Mechanical properties |
| url | http://www.sciencedirect.com/science/article/pii/S2213956722003024 |
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