Influence of welding and post-weld heat treatment on high strength steel structures
In this study, the influence of welding and post-weld heat treatment (PWHT) on high strength steel structures is investigated. The research target is a reheated, quenched and tempered high strength structural steel plate RQT-S690 manufactured to grade S690. The studied influence of welding on this m...
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
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2015
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| Online Access: | http://hdl.handle.net/10356/63505 |
| _version_ | 1826128515137798144 |
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| author | Zhao, Ming-Shan |
| author2 | Chiew Sing Ping |
| author_facet | Chiew Sing Ping Zhao, Ming-Shan |
| author_sort | Zhao, Ming-Shan |
| collection | NTU |
| description | In this study, the influence of welding and post-weld heat treatment (PWHT) on high strength steel structures is investigated. The research target is a reheated, quenched and tempered high strength structural steel plate RQT-S690 manufactured to grade S690. The studied influence of welding on this material includes residual stress and the property alternation in the heat affected zone (HAZ) on the tensile performance of as-welded plate-to-plate (PtP) joints and fatigue performance of built-up box T-joints, and the investigated effects of PWHT include the effects on residual stress, general HAZ properties and the tensile performance of the PtP joints. The results show that residual stress has negligible influence on the performance of high strength steel structures under externally applied tensile stresses but HAZ greatly affects the post-yield behavior and failure modes of the studied PtP joints, and proper PWHT could be helpful to improve the performance of high strength steel structures. |
| first_indexed | 2024-10-01T07:26:12Z |
| format | Thesis |
| id | ntu-10356/63505 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:26:12Z |
| publishDate | 2015 |
| record_format | dspace |
| spelling | ntu-10356/635052023-03-03T19:30:59Z Influence of welding and post-weld heat treatment on high strength steel structures Zhao, Ming-Shan Chiew Sing Ping School of Civil and Environmental Engineering DRNTU::Engineering::Civil engineering::Structures and design In this study, the influence of welding and post-weld heat treatment (PWHT) on high strength steel structures is investigated. The research target is a reheated, quenched and tempered high strength structural steel plate RQT-S690 manufactured to grade S690. The studied influence of welding on this material includes residual stress and the property alternation in the heat affected zone (HAZ) on the tensile performance of as-welded plate-to-plate (PtP) joints and fatigue performance of built-up box T-joints, and the investigated effects of PWHT include the effects on residual stress, general HAZ properties and the tensile performance of the PtP joints. The results show that residual stress has negligible influence on the performance of high strength steel structures under externally applied tensile stresses but HAZ greatly affects the post-yield behavior and failure modes of the studied PtP joints, and proper PWHT could be helpful to improve the performance of high strength steel structures. Doctor of Philosophy (CEE) 2015-05-14T06:06:12Z 2015-05-14T06:06:12Z 2015 2015 Thesis Zhao, M.-S. (2015). Influence of welding and post-weld heat treatment on high strength steel structures. Doctoral thesis, Nanyang Technological University, Singapore. http://hdl.handle.net/10356/63505 en 255 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Civil engineering::Structures and design Zhao, Ming-Shan Influence of welding and post-weld heat treatment on high strength steel structures |
| title | Influence of welding and post-weld heat treatment on high strength steel structures |
| title_full | Influence of welding and post-weld heat treatment on high strength steel structures |
| title_fullStr | Influence of welding and post-weld heat treatment on high strength steel structures |
| title_full_unstemmed | Influence of welding and post-weld heat treatment on high strength steel structures |
| title_short | Influence of welding and post-weld heat treatment on high strength steel structures |
| title_sort | influence of welding and post weld heat treatment on high strength steel structures |
| topic | DRNTU::Engineering::Civil engineering::Structures and design |
| url | http://hdl.handle.net/10356/63505 |
| work_keys_str_mv | AT zhaomingshan influenceofweldingandpostweldheattreatmentonhighstrengthsteelstructures |