Microstructure and Mechanical Properties of Thick Plate Friction Stir Welds for 6082-T6 Aluminum Alloy
6082-T6 aluminum alloy plate with thickness of 42mm was butt welded by friction stir welding (FSW) from two sides. The microstructures of the joints exhibited different grain sizes because of unequal frictional heating and plastic flow during FSW process. The transition from the heat affected zone (...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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De Gruyter
2019-02-01
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| Series: | High Temperature Materials and Processes |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/htmp-2018-0074 |
| _version_ | 1823939401102655488 |
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| author | Liang Zhimin Wang Xue Cai Congwei Wang Dianlong |
| author_facet | Liang Zhimin Wang Xue Cai Congwei Wang Dianlong |
| author_sort | Liang Zhimin |
| collection | DOAJ |
| description | 6082-T6 aluminum alloy plate with thickness of 42mm was butt welded by friction stir welding (FSW) from two sides. The microstructures of the joints exhibited different grain sizes because of unequal frictional heating and plastic flow during FSW process. The transition from the heat affected zone (HAZ) to the nugget zone (NZ) in thermos-mechanical affected zone of advancing side (AS-TMAZ) was more sudden than thermos-mechanical affected zone of retreating side (RS-TMAZ). Kissing bond (KB) defect throughout the entire FSW joint was displayed both at the grain boundary and in the interior of the grain with semi-continuous bands. KB had no direct effect on tensile properties. Vickers hardness of the FSW joint was lower than the BM because its high heat input, dissolved and coarsened precipitates and little to the grain size after FSW. Hardness distribution of double-sided welding joint showed X-shaped area softening characteristics, that is to say the lowest hardness was the junction of two welding joint of NZ and the junction of TMAZ and HAZ. The tensile fracture position occurred in the lowest hardness region of the FSW joint, and it did not occur in the KB defect position. |
| first_indexed | 2024-12-17T02:57:40Z |
| format | Article |
| id | doaj.art-62eca1144ecd4e619a7de58a01899460 |
| institution | Directory Open Access Journal |
| issn | 0334-6455 2191-0324 |
| language | English |
| last_indexed | 2024-12-17T02:57:40Z |
| publishDate | 2019-02-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | High Temperature Materials and Processes |
| spelling | doaj.art-62eca1144ecd4e619a7de58a018994602022-12-21T22:06:13ZengDe GruyterHigh Temperature Materials and Processes0334-64552191-03242019-02-0138201952553210.1515/htmp-2018-0074Microstructure and Mechanical Properties of Thick Plate Friction Stir Welds for 6082-T6 Aluminum AlloyLiang Zhimin0Wang Xue1Cai Congwei2Wang Dianlong3School of Materials Science and Engineering, Hebei University of Science and Technology, No. 26 Yuxiang Avenue, Yuhua District, Shijiazhuang050018, ChinaSchool of Materials Science and Engineering, Hebei University of Science and Technology, No. 26 Yuxiang Avenue, Yuhua District, Shijiazhuang050018, ChinaSchool of Materials Science and Engineering, Hebei University of Science and Technology, No. 26 Yuxiang Avenue, Yuhua District, Shijiazhuang050018, ChinaSchool of Materials Science and Engineering, Hebei University of Science and Technology, No. 26 Yuxiang Avenue, Yuhua District, Shijiazhuang050018, China6082-T6 aluminum alloy plate with thickness of 42mm was butt welded by friction stir welding (FSW) from two sides. The microstructures of the joints exhibited different grain sizes because of unequal frictional heating and plastic flow during FSW process. The transition from the heat affected zone (HAZ) to the nugget zone (NZ) in thermos-mechanical affected zone of advancing side (AS-TMAZ) was more sudden than thermos-mechanical affected zone of retreating side (RS-TMAZ). Kissing bond (KB) defect throughout the entire FSW joint was displayed both at the grain boundary and in the interior of the grain with semi-continuous bands. KB had no direct effect on tensile properties. Vickers hardness of the FSW joint was lower than the BM because its high heat input, dissolved and coarsened precipitates and little to the grain size after FSW. Hardness distribution of double-sided welding joint showed X-shaped area softening characteristics, that is to say the lowest hardness was the junction of two welding joint of NZ and the junction of TMAZ and HAZ. The tensile fracture position occurred in the lowest hardness region of the FSW joint, and it did not occur in the KB defect position.https://doi.org/10.1515/htmp-2018-00746082 aluminum alloyfriction stir welds (fsw)microstructuremechanical propertieskissing bond (kb) |
| spellingShingle | Liang Zhimin Wang Xue Cai Congwei Wang Dianlong Microstructure and Mechanical Properties of Thick Plate Friction Stir Welds for 6082-T6 Aluminum Alloy High Temperature Materials and Processes 6082 aluminum alloy friction stir welds (fsw) microstructure mechanical properties kissing bond (kb) |
| title | Microstructure and Mechanical Properties of Thick Plate Friction Stir Welds for 6082-T6 Aluminum Alloy |
| title_full | Microstructure and Mechanical Properties of Thick Plate Friction Stir Welds for 6082-T6 Aluminum Alloy |
| title_fullStr | Microstructure and Mechanical Properties of Thick Plate Friction Stir Welds for 6082-T6 Aluminum Alloy |
| title_full_unstemmed | Microstructure and Mechanical Properties of Thick Plate Friction Stir Welds for 6082-T6 Aluminum Alloy |
| title_short | Microstructure and Mechanical Properties of Thick Plate Friction Stir Welds for 6082-T6 Aluminum Alloy |
| title_sort | microstructure and mechanical properties of thick plate friction stir welds for 6082 t6 aluminum alloy |
| topic | 6082 aluminum alloy friction stir welds (fsw) microstructure mechanical properties kissing bond (kb) |
| url | https://doi.org/10.1515/htmp-2018-0074 |
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