Post Weld Heat Treatment for High Strength Steel Welded Connections
In this study, experiments were conducted to investigate the effect of post-weld heat treatment (PWHT) on the reheated, quenched and tempered (RQT) grade S690 high strength steel welded connections. Firstly, the effect of PWHT on the mechanical properties after welding is investigated. It is found t...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2016
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/80613 http://hdl.handle.net/10220/40602 |
| _version_ | 1811680817624121344 |
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| author | Zhao, Ming Shan Chiew, S. P. Lee, C. K. |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Zhao, Ming Shan Chiew, S. P. Lee, C. K. |
| author_sort | Zhao, Ming Shan |
| collection | NTU |
| description | In this study, experiments were conducted to investigate the effect of post-weld heat treatment (PWHT) on the reheated, quenched and tempered (RQT) grade S690 high strength steel welded connections. Firstly, the effect of PWHT on the mechanical properties after welding is investigated. It is found that the loss of both strength and ductility after welding could be serious but PWHT could be able to improve the ductility of the affected specimens at the expense of strength. Secondly, four Y-shape plate-to-plate (Y-PtP) and nine T-stub RQT-S690 joints are fabricated to study the effect of PWHT on the residual stress level near the weld toe and the tensile behavior of the joints, respectively. The hole drilling tests employed to study the residual stress reveal that PWHT is able to decrease the residual stress level near the weld toe significantly. The tensile test results show that proper PWHT could improve both the ductility and the maximum resistance while the reduction of plastic resistance can be kept in a negligible level. However, it is found that if the specimens are overheated, although the ductility could still be increased, the reduction of load carrying capacity was severe. |
| first_indexed | 2024-10-01T03:31:05Z |
| format | Journal Article |
| id | ntu-10356/80613 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:31:05Z |
| publishDate | 2016 |
| record_format | dspace |
| spelling | ntu-10356/806132020-03-07T11:43:30Z Post Weld Heat Treatment for High Strength Steel Welded Connections Zhao, Ming Shan Chiew, S. P. Lee, C. K. School of Civil and Environmental Engineering Welded connections Post-weld heat treatment High strength steel Residual stress Tensile behavior In this study, experiments were conducted to investigate the effect of post-weld heat treatment (PWHT) on the reheated, quenched and tempered (RQT) grade S690 high strength steel welded connections. Firstly, the effect of PWHT on the mechanical properties after welding is investigated. It is found that the loss of both strength and ductility after welding could be serious but PWHT could be able to improve the ductility of the affected specimens at the expense of strength. Secondly, four Y-shape plate-to-plate (Y-PtP) and nine T-stub RQT-S690 joints are fabricated to study the effect of PWHT on the residual stress level near the weld toe and the tensile behavior of the joints, respectively. The hole drilling tests employed to study the residual stress reveal that PWHT is able to decrease the residual stress level near the weld toe significantly. The tensile test results show that proper PWHT could improve both the ductility and the maximum resistance while the reduction of plastic resistance can be kept in a negligible level. However, it is found that if the specimens are overheated, although the ductility could still be increased, the reduction of load carrying capacity was severe. Accepted version 2016-06-02T04:49:22Z 2019-12-06T13:53:14Z 2016-06-02T04:49:22Z 2019-12-06T13:53:14Z 2016 2016 Journal Article Zhao, M. S., Chiew, S. P., & Lee, C. K. (2016). Post Weld Heat Treatment for High Strength Steel Welded Connections. Journal of Constructional Steel Research, 122, 167-177. 0143-974X https://hdl.handle.net/10356/80613 http://hdl.handle.net/10220/40602 10.1016/j.jcsr.2016.03.015 192934 en Journal of Constructional Steel Research © 2016 Elsevier. This is the author created version of a work that has been peer reviewed and accepted for publication by Journal of Constructional Steel Research, Elsevier. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1016/j.jcsr.2016.03.015]. 37 p. application/pdf |
| spellingShingle | Welded connections Post-weld heat treatment High strength steel Residual stress Tensile behavior Zhao, Ming Shan Chiew, S. P. Lee, C. K. Post Weld Heat Treatment for High Strength Steel Welded Connections |
| title | Post Weld Heat Treatment for High Strength Steel Welded Connections |
| title_full | Post Weld Heat Treatment for High Strength Steel Welded Connections |
| title_fullStr | Post Weld Heat Treatment for High Strength Steel Welded Connections |
| title_full_unstemmed | Post Weld Heat Treatment for High Strength Steel Welded Connections |
| title_short | Post Weld Heat Treatment for High Strength Steel Welded Connections |
| title_sort | post weld heat treatment for high strength steel welded connections |
| topic | Welded connections Post-weld heat treatment High strength steel Residual stress Tensile behavior |
| url | https://hdl.handle.net/10356/80613 http://hdl.handle.net/10220/40602 |
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