Development of a Finite Element Model for the HAZ Temperature Field in Longitudinal Welding of Pipeline Steel
In this study, a novel hybrid heat source model was developed to simulate the welding temperature field in the heat-affected zone (HAZ) of X80 pipeline steel. This model replicates welding conditions with high accuracy and allows flexible three-dimensional adjustments to suit various scenarios. Its...
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MDPI AG
2025-01-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/15/1/91 |
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| author | Zhixing Wang Chengjia Shang Xuelin Wang |
| author_facet | Zhixing Wang Chengjia Shang Xuelin Wang |
| author_sort | Zhixing Wang |
| collection | DOAJ |
| description | In this study, a novel hybrid heat source model was developed to simulate the welding temperature field in the heat-affected zone (HAZ) of X80 pipeline steel. This model replicates welding conditions with high accuracy and allows flexible three-dimensional adjustments to suit various scenarios. Its development involved the innovative integration of microstructural crystallography information with a multi-scale calibration and validation methodology. The methodology focused on three critical aspects: the weld interface morphology, the location of the Ac<sub>1</sub> temperature, and the size of prior austenite grains (PAG). The morphology of the weld interface was calibrated to align closely with experimental observations. The model’s prediction of the Ac<sub>1</sub> location in actual welded joints exhibited a deviation of less than ±0.3 mm. Furthermore, comparisons of reconstructed PAG sizes between thermal simulation samples and actual HAZ samples revealed minimal discrepancies (5 μm). Validation results confirmed that the calibrated model accurately describes the welding temperature field, with reconstructed PAG size differences between simulation and experimental results being less than 9 μm. These findings validate the accuracy of the calibrated model in predicting welding temperature fields. This research introduces a novel framework for the development of heat source models, offering a robust foundation for improving welding performance and controlling microstructure in different regions during the welding process of high-strength low-alloy (HSLA) steel. |
| format | Article |
| id | doaj-art-a8ae8fbb1c244ff697c1ab5dce65ef21 |
| institution | Kabale University |
| issn | 2075-4701 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj-art-a8ae8fbb1c244ff697c1ab5dce65ef212025-01-24T13:41:39ZengMDPI AGMetals2075-47012025-01-011519110.3390/met15010091Development of a Finite Element Model for the HAZ Temperature Field in Longitudinal Welding of Pipeline SteelZhixing Wang0Chengjia Shang1Xuelin Wang2Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083, ChinaCollaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083, ChinaCollaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083, ChinaIn this study, a novel hybrid heat source model was developed to simulate the welding temperature field in the heat-affected zone (HAZ) of X80 pipeline steel. This model replicates welding conditions with high accuracy and allows flexible three-dimensional adjustments to suit various scenarios. Its development involved the innovative integration of microstructural crystallography information with a multi-scale calibration and validation methodology. The methodology focused on three critical aspects: the weld interface morphology, the location of the Ac<sub>1</sub> temperature, and the size of prior austenite grains (PAG). The morphology of the weld interface was calibrated to align closely with experimental observations. The model’s prediction of the Ac<sub>1</sub> location in actual welded joints exhibited a deviation of less than ±0.3 mm. Furthermore, comparisons of reconstructed PAG sizes between thermal simulation samples and actual HAZ samples revealed minimal discrepancies (5 μm). Validation results confirmed that the calibrated model accurately describes the welding temperature field, with reconstructed PAG size differences between simulation and experimental results being less than 9 μm. These findings validate the accuracy of the calibrated model in predicting welding temperature fields. This research introduces a novel framework for the development of heat source models, offering a robust foundation for improving welding performance and controlling microstructure in different regions during the welding process of high-strength low-alloy (HSLA) steel.https://www.mdpi.com/2075-4701/15/1/91heat-affected zonefinite element analysishybrid heat source modelmicrostructural validationPAG reconstruction |
| spellingShingle | Zhixing Wang Chengjia Shang Xuelin Wang Development of a Finite Element Model for the HAZ Temperature Field in Longitudinal Welding of Pipeline Steel Metals heat-affected zone finite element analysis hybrid heat source model microstructural validation PAG reconstruction |
| title | Development of a Finite Element Model for the HAZ Temperature Field in Longitudinal Welding of Pipeline Steel |
| title_full | Development of a Finite Element Model for the HAZ Temperature Field in Longitudinal Welding of Pipeline Steel |
| title_fullStr | Development of a Finite Element Model for the HAZ Temperature Field in Longitudinal Welding of Pipeline Steel |
| title_full_unstemmed | Development of a Finite Element Model for the HAZ Temperature Field in Longitudinal Welding of Pipeline Steel |
| title_short | Development of a Finite Element Model for the HAZ Temperature Field in Longitudinal Welding of Pipeline Steel |
| title_sort | development of a finite element model for the haz temperature field in longitudinal welding of pipeline steel |
| topic | heat-affected zone finite element analysis hybrid heat source model microstructural validation PAG reconstruction |
| url | https://www.mdpi.com/2075-4701/15/1/91 |
| work_keys_str_mv | AT zhixingwang developmentofafiniteelementmodelforthehaztemperaturefieldinlongitudinalweldingofpipelinesteel AT chengjiashang developmentofafiniteelementmodelforthehaztemperaturefieldinlongitudinalweldingofpipelinesteel AT xuelinwang developmentofafiniteelementmodelforthehaztemperaturefieldinlongitudinalweldingofpipelinesteel |