Creep Rupture Behavior in Dissimilar Weldment between FB2 and 30Cr1Mo1V Heat-Resistant Steel
Creep rupture behavior of dissimilar weldments between FB2 and 30Cr1Mo1V heat-resistant steel by multipass welding at 783 K (510°C) under different stresses (260 to 420 MPa) was researched. The fitted creep rupture exponent is 14.53, and the 10,000 h extrapolating strength values predicted by the po...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2021/1143989 |
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| author | Jiankun Xiong Jianping Yang Haiyan Zhao Lin Yang Yang Guo Fuheng Nie Dexing Xu Liping Yu Fenghong Cao |
| author_facet | Jiankun Xiong Jianping Yang Haiyan Zhao Lin Yang Yang Guo Fuheng Nie Dexing Xu Liping Yu Fenghong Cao |
| author_sort | Jiankun Xiong |
| collection | DOAJ |
| description | Creep rupture behavior of dissimilar weldments between FB2 and 30Cr1Mo1V heat-resistant steel by multipass welding at 783 K (510°C) under different stresses (260 to 420 MPa) was researched. The fitted creep rupture exponent is 14.53, and the 10,000 h extrapolating strength values predicted by the power law and Larson-Miller parameter show good agreement with experimental data. The samples exhibit a ductile fracture character and fracture in the weld fusion zone, which has a highly heterogeneous microstructure and grains with different morphologies and sizes and an obvious softening. There exist a decrease in the dislocation and precipitate density and an increase in the subgrain size in the weld metal after creep. The rupture is a transgranular fracture characterized by dimples as a result of microvoid coalescence. Laves phases along with copper-rich precipitates are observed in the vicinity of fracture surface, which creates a stress concentration that can cause transgranular fracture initiation. |
| format | Article |
| id | doaj-art-25ee6345095448f5bbd2e0a36bd74a16 |
| institution | Kabale University |
| issn | 1687-529X |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-25ee6345095448f5bbd2e0a36bd74a162025-02-03T07:24:16ZengWileyInternational Journal of Photoenergy1687-529X2021-01-01202110.1155/2021/1143989Creep Rupture Behavior in Dissimilar Weldment between FB2 and 30Cr1Mo1V Heat-Resistant SteelJiankun Xiong0Jianping Yang1Haiyan Zhao2Lin Yang3Yang Guo4Fuheng Nie5Dexing Xu6Liping Yu7Fenghong Cao8School of Mechanical EngineeringState Key Laboratory of Long-Life High Temperature MaterialsSchool of Mechanical EngineeringState Key Laboratory of Long-Life High Temperature MaterialsManufacturing Technology DepartmentState Key Laboratory of Long-Life High Temperature MaterialsState Key Laboratory of Long-Life High Temperature MaterialsSchool of Mechanical EngineeringInstitute of Light Alloy MaterialsCreep rupture behavior of dissimilar weldments between FB2 and 30Cr1Mo1V heat-resistant steel by multipass welding at 783 K (510°C) under different stresses (260 to 420 MPa) was researched. The fitted creep rupture exponent is 14.53, and the 10,000 h extrapolating strength values predicted by the power law and Larson-Miller parameter show good agreement with experimental data. The samples exhibit a ductile fracture character and fracture in the weld fusion zone, which has a highly heterogeneous microstructure and grains with different morphologies and sizes and an obvious softening. There exist a decrease in the dislocation and precipitate density and an increase in the subgrain size in the weld metal after creep. The rupture is a transgranular fracture characterized by dimples as a result of microvoid coalescence. Laves phases along with copper-rich precipitates are observed in the vicinity of fracture surface, which creates a stress concentration that can cause transgranular fracture initiation.http://dx.doi.org/10.1155/2021/1143989 |
| spellingShingle | Jiankun Xiong Jianping Yang Haiyan Zhao Lin Yang Yang Guo Fuheng Nie Dexing Xu Liping Yu Fenghong Cao Creep Rupture Behavior in Dissimilar Weldment between FB2 and 30Cr1Mo1V Heat-Resistant Steel International Journal of Photoenergy |
| title | Creep Rupture Behavior in Dissimilar Weldment between FB2 and 30Cr1Mo1V Heat-Resistant Steel |
| title_full | Creep Rupture Behavior in Dissimilar Weldment between FB2 and 30Cr1Mo1V Heat-Resistant Steel |
| title_fullStr | Creep Rupture Behavior in Dissimilar Weldment between FB2 and 30Cr1Mo1V Heat-Resistant Steel |
| title_full_unstemmed | Creep Rupture Behavior in Dissimilar Weldment between FB2 and 30Cr1Mo1V Heat-Resistant Steel |
| title_short | Creep Rupture Behavior in Dissimilar Weldment between FB2 and 30Cr1Mo1V Heat-Resistant Steel |
| title_sort | creep rupture behavior in dissimilar weldment between fb2 and 30cr1mo1v heat resistant steel |
| url | http://dx.doi.org/10.1155/2021/1143989 |
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