An innovative joint interface design for reducing intermetallic compounds and improving joint strength of thick plate friction stir welded Al/Mg joints
Friction stir welding of dissimilar Al/Mg thick plates still faces severe challenges, such as poor formability, formation of thick intermetallic compounds, and low joint strength. In this work, two joint configurations, namely inclined butt (conventional butt) and serrated interlocking (innovative b...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2023-09-01
|
| Series: | Journal of Magnesium and Alloys |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213956722000524 |
| _version_ | 1797630594145845248 |
|---|---|
| author | Yang Xu Liming Ke Yuqing Mao Jifeng Sun Yaxiong Duan Limin Yu |
| author_facet | Yang Xu Liming Ke Yuqing Mao Jifeng Sun Yaxiong Duan Limin Yu |
| author_sort | Yang Xu |
| collection | DOAJ |
| description | Friction stir welding of dissimilar Al/Mg thick plates still faces severe challenges, such as poor formability, formation of thick intermetallic compounds, and low joint strength. In this work, two joint configurations, namely inclined butt (conventional butt) and serrated interlocking (innovative butt), are proposed for improving weld formation and joint quality. The results show that a continuous and straight intermetallic compound layer appears at the Mg side interface in conventional butt joint, and the maximum average thickness reaches about 60.1 µm. Additionally, the Mg side interface also partially melts, forming a eutectic structure composed of Mg solid solution and Al12Mg17 phase. For the innovative butt joint, the Mg side interface presents the curved interlocking feature, and intermetallic compounds can be reduced to less than 10 µm. The joint strength of innovative butt joint is more than three times that of conventional butt joint. This is due to the interlocking effect and thin intermetallic compounds in the innovative joint. |
| first_indexed | 2024-03-11T11:10:26Z |
| format | Article |
| id | doaj.art-4c19e7ecbb5f4906be5de3457a78f523 |
| institution | Directory Open Access Journal |
| issn | 2213-9567 |
| language | English |
| last_indexed | 2024-03-11T11:10:26Z |
| publishDate | 2023-09-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Magnesium and Alloys |
| spelling | doaj.art-4c19e7ecbb5f4906be5de3457a78f5232023-11-12T04:39:59ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672023-09-0111931513160An innovative joint interface design for reducing intermetallic compounds and improving joint strength of thick plate friction stir welded Al/Mg jointsYang Xu0Liming Ke1Yuqing Mao2Jifeng Sun3Yaxiong Duan4Limin Yu5National Defence Key Discipline Laboratory of Light Alloy Processing Science and Technology, Nanchang Hangkong University, Nanchang 330063, PR China; State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, PR ChinaNational Defence Key Discipline Laboratory of Light Alloy Processing Science and Technology, Nanchang Hangkong University, Nanchang 330063, PR China; Corresponding authors.National Defence Key Discipline Laboratory of Light Alloy Processing Science and Technology, Nanchang Hangkong University, Nanchang 330063, PR China; Corresponding authors.National Defence Key Discipline Laboratory of Light Alloy Processing Science and Technology, Nanchang Hangkong University, Nanchang 330063, PR ChinaNational Defence Key Discipline Laboratory of Light Alloy Processing Science and Technology, Nanchang Hangkong University, Nanchang 330063, PR ChinaNational Defence Key Discipline Laboratory of Light Alloy Processing Science and Technology, Nanchang Hangkong University, Nanchang 330063, PR ChinaFriction stir welding of dissimilar Al/Mg thick plates still faces severe challenges, such as poor formability, formation of thick intermetallic compounds, and low joint strength. In this work, two joint configurations, namely inclined butt (conventional butt) and serrated interlocking (innovative butt), are proposed for improving weld formation and joint quality. The results show that a continuous and straight intermetallic compound layer appears at the Mg side interface in conventional butt joint, and the maximum average thickness reaches about 60.1 µm. Additionally, the Mg side interface also partially melts, forming a eutectic structure composed of Mg solid solution and Al12Mg17 phase. For the innovative butt joint, the Mg side interface presents the curved interlocking feature, and intermetallic compounds can be reduced to less than 10 µm. The joint strength of innovative butt joint is more than three times that of conventional butt joint. This is due to the interlocking effect and thin intermetallic compounds in the innovative joint.http://www.sciencedirect.com/science/article/pii/S2213956722000524Al/Mg jointFriction stir weldingThick plateIntermetallic compoundsJoint strength |
| spellingShingle | Yang Xu Liming Ke Yuqing Mao Jifeng Sun Yaxiong Duan Limin Yu An innovative joint interface design for reducing intermetallic compounds and improving joint strength of thick plate friction stir welded Al/Mg joints Journal of Magnesium and Alloys Al/Mg joint Friction stir welding Thick plate Intermetallic compounds Joint strength |
| title | An innovative joint interface design for reducing intermetallic compounds and improving joint strength of thick plate friction stir welded Al/Mg joints |
| title_full | An innovative joint interface design for reducing intermetallic compounds and improving joint strength of thick plate friction stir welded Al/Mg joints |
| title_fullStr | An innovative joint interface design for reducing intermetallic compounds and improving joint strength of thick plate friction stir welded Al/Mg joints |
| title_full_unstemmed | An innovative joint interface design for reducing intermetallic compounds and improving joint strength of thick plate friction stir welded Al/Mg joints |
| title_short | An innovative joint interface design for reducing intermetallic compounds and improving joint strength of thick plate friction stir welded Al/Mg joints |
| title_sort | innovative joint interface design for reducing intermetallic compounds and improving joint strength of thick plate friction stir welded al mg joints |
| topic | Al/Mg joint Friction stir welding Thick plate Intermetallic compounds Joint strength |
| url | http://www.sciencedirect.com/science/article/pii/S2213956722000524 |
| work_keys_str_mv | AT yangxu aninnovativejointinterfacedesignforreducingintermetalliccompoundsandimprovingjointstrengthofthickplatefrictionstirweldedalmgjoints AT limingke aninnovativejointinterfacedesignforreducingintermetalliccompoundsandimprovingjointstrengthofthickplatefrictionstirweldedalmgjoints AT yuqingmao aninnovativejointinterfacedesignforreducingintermetalliccompoundsandimprovingjointstrengthofthickplatefrictionstirweldedalmgjoints AT jifengsun aninnovativejointinterfacedesignforreducingintermetalliccompoundsandimprovingjointstrengthofthickplatefrictionstirweldedalmgjoints AT yaxiongduan aninnovativejointinterfacedesignforreducingintermetalliccompoundsandimprovingjointstrengthofthickplatefrictionstirweldedalmgjoints AT liminyu aninnovativejointinterfacedesignforreducingintermetalliccompoundsandimprovingjointstrengthofthickplatefrictionstirweldedalmgjoints AT yangxu innovativejointinterfacedesignforreducingintermetalliccompoundsandimprovingjointstrengthofthickplatefrictionstirweldedalmgjoints AT limingke innovativejointinterfacedesignforreducingintermetalliccompoundsandimprovingjointstrengthofthickplatefrictionstirweldedalmgjoints AT yuqingmao innovativejointinterfacedesignforreducingintermetalliccompoundsandimprovingjointstrengthofthickplatefrictionstirweldedalmgjoints AT jifengsun innovativejointinterfacedesignforreducingintermetalliccompoundsandimprovingjointstrengthofthickplatefrictionstirweldedalmgjoints AT yaxiongduan innovativejointinterfacedesignforreducingintermetalliccompoundsandimprovingjointstrengthofthickplatefrictionstirweldedalmgjoints AT liminyu innovativejointinterfacedesignforreducingintermetalliccompoundsandimprovingjointstrengthofthickplatefrictionstirweldedalmgjoints |