Role of A-TIG process in joining of martensitic and austenitic steels for ultra-supercritical power plants -a state of the art review
The need for Dissimilar Welded Joint (DWJ) in the power plant components arises in order to increase the overall efficiency of the plant and to avoid premature failure in the component welds. The Activated-Tungsten Inert Gas (A-TIG) welding process, which is a variant of Tungsten Inert Gas (TIG) wel...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-08-01
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| Series: | Nuclear Engineering and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1738573322001036 |
| _version_ | 1828293905086414848 |
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| author | Vishwa Bhanu Ankur Gupta Chandan Pandey |
| author_facet | Vishwa Bhanu Ankur Gupta Chandan Pandey |
| author_sort | Vishwa Bhanu |
| collection | DOAJ |
| description | The need for Dissimilar Welded Joint (DWJ) in the power plant components arises in order to increase the overall efficiency of the plant and to avoid premature failure in the component welds. The Activated-Tungsten Inert Gas (A-TIG) welding process, which is a variant of Tungsten Inert Gas (TIG) welding, is focus of this review work concerning the DWJ of nuclear grade creep-strength enhanced ferritic/martensitic (CSEF/M) steels and austenitic steels. A-TIG DWJs are compared with Multipass-Tungsten Inert Gas (M-TIG) DWJ based on their mechanical and microstructural properties. The limitations of multipass welding have put A-TIG welding in focus as A-TIG provides a weld with increased depth of penetration (DOP) and enhanced mechanical properties. Hence, this review article covers the A-TIG welding principle and working parameters along with detailed analysis of role played by the flux in welding procedure. Further, weld characteristics of martensitic and austenitic steel DWJ developed with the A-TIG welding process and the M-TIG welding process are compared in this study as there are differences in mechanical, microstructural, creep-related, and residual stress obtained in both TIG variants. The mechanics involved in the welding process is deliberated which is revealed by microstructural changes and behavior of base metals and WFZ. |
| first_indexed | 2024-04-13T11:29:09Z |
| format | Article |
| id | doaj.art-dd714054443b486f999fd10fae90e5f7 |
| institution | Directory Open Access Journal |
| issn | 1738-5733 |
| language | English |
| last_indexed | 2024-04-13T11:29:09Z |
| publishDate | 2022-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Engineering and Technology |
| spelling | doaj.art-dd714054443b486f999fd10fae90e5f72022-12-22T02:48:37ZengElsevierNuclear Engineering and Technology1738-57332022-08-0154827552770Role of A-TIG process in joining of martensitic and austenitic steels for ultra-supercritical power plants -a state of the art reviewVishwa Bhanu0Ankur Gupta1Chandan Pandey2Department of Mechanical Engineering, IIT Jodhpur, Karwar, Jodhpur, 342037, Rajasthan, IndiaCorresponding author.; Department of Mechanical Engineering, IIT Jodhpur, Karwar, Jodhpur, 342037, Rajasthan, IndiaCorresponding author.; Department of Mechanical Engineering, IIT Jodhpur, Karwar, Jodhpur, 342037, Rajasthan, IndiaThe need for Dissimilar Welded Joint (DWJ) in the power plant components arises in order to increase the overall efficiency of the plant and to avoid premature failure in the component welds. The Activated-Tungsten Inert Gas (A-TIG) welding process, which is a variant of Tungsten Inert Gas (TIG) welding, is focus of this review work concerning the DWJ of nuclear grade creep-strength enhanced ferritic/martensitic (CSEF/M) steels and austenitic steels. A-TIG DWJs are compared with Multipass-Tungsten Inert Gas (M-TIG) DWJ based on their mechanical and microstructural properties. The limitations of multipass welding have put A-TIG welding in focus as A-TIG provides a weld with increased depth of penetration (DOP) and enhanced mechanical properties. Hence, this review article covers the A-TIG welding principle and working parameters along with detailed analysis of role played by the flux in welding procedure. Further, weld characteristics of martensitic and austenitic steel DWJ developed with the A-TIG welding process and the M-TIG welding process are compared in this study as there are differences in mechanical, microstructural, creep-related, and residual stress obtained in both TIG variants. The mechanics involved in the welding process is deliberated which is revealed by microstructural changes and behavior of base metals and WFZ.http://www.sciencedirect.com/science/article/pii/S1738573322001036Dissimilar weldingActivated-TIGMarangoni effectMicrostructureResidual stressCreep strength |
| spellingShingle | Vishwa Bhanu Ankur Gupta Chandan Pandey Role of A-TIG process in joining of martensitic and austenitic steels for ultra-supercritical power plants -a state of the art review Nuclear Engineering and Technology Dissimilar welding Activated-TIG Marangoni effect Microstructure Residual stress Creep strength |
| title | Role of A-TIG process in joining of martensitic and austenitic steels for ultra-supercritical power plants -a state of the art review |
| title_full | Role of A-TIG process in joining of martensitic and austenitic steels for ultra-supercritical power plants -a state of the art review |
| title_fullStr | Role of A-TIG process in joining of martensitic and austenitic steels for ultra-supercritical power plants -a state of the art review |
| title_full_unstemmed | Role of A-TIG process in joining of martensitic and austenitic steels for ultra-supercritical power plants -a state of the art review |
| title_short | Role of A-TIG process in joining of martensitic and austenitic steels for ultra-supercritical power plants -a state of the art review |
| title_sort | role of a tig process in joining of martensitic and austenitic steels for ultra supercritical power plants a state of the art review |
| topic | Dissimilar welding Activated-TIG Marangoni effect Microstructure Residual stress Creep strength |
| url | http://www.sciencedirect.com/science/article/pii/S1738573322001036 |
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