Preliminary investigation on underwater wet welding of Inconel 625 alloy: microstructure, mechanical properties and corrosion resistance
This paper aimed to investigate the feasibility of underwater wet welding for Inconel 625 alloy using Ni-based filler. The microstructure, elemental distribution, and properties of underwater wet welded Inconel 625 alloy joints were analyzed. The grain boundary type and grain growth orientation acro...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-09-01
|
| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785422012686 |
| _version_ | 1811199243050811392 |
|---|---|
| author | Hongliang Li Shixiong Liu Feixiang Sun Lingyuan Yu Jibo Wang Zeyu Wang Ke Han Yucheng Lei |
| author_facet | Hongliang Li Shixiong Liu Feixiang Sun Lingyuan Yu Jibo Wang Zeyu Wang Ke Han Yucheng Lei |
| author_sort | Hongliang Li |
| collection | DOAJ |
| description | This paper aimed to investigate the feasibility of underwater wet welding for Inconel 625 alloy using Ni-based filler. The microstructure, elemental distribution, and properties of underwater wet welded Inconel 625 alloy joints were analyzed. The grain boundary type and grain growth orientation across the fusion boundary were particularly investigated. A continuous and smooth weld with no visible defects was obtained. The nickel based welds was fully austenite structure with extensive grain boundary migration. The heat-affected zone experienced obvious grain growth. A compositional transition zone with a width of 50 μm was observed across the fusion boundary. Apparent epitaxial growth across the fusion boundaries was found and the grain boundaries roughly perpendicular to the fusion boundaries are was mainly high angle grain boundaries. The density of low Σ CSL grain boundary in Inconel 625 base metal was higher than that in Ni-based weld metal. The ultimate tensile strength of underwater wet welded joints reached up to 83% that of Inconel 625 alloy. The impact toughness of HAZ was deteriorated because of the segregation of carbide and Laves phase in grain boundary. The corrosion resistance of Ni-based welds maintained at a high level based on the corrosion current density, although it was inferior to that of Inconel 625 alloy. The expected research results could enrich the underwater welding/repair technology of Ni-based alloy structures. |
| first_indexed | 2024-04-12T01:44:45Z |
| format | Article |
| id | doaj.art-41d173c879334bbba57cfe3f0ce464f1 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-12T01:44:45Z |
| publishDate | 2022-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-41d173c879334bbba57cfe3f0ce464f12022-12-22T03:53:06ZengElsevierJournal of Materials Research and Technology2238-78542022-09-012023942407Preliminary investigation on underwater wet welding of Inconel 625 alloy: microstructure, mechanical properties and corrosion resistanceHongliang Li0Shixiong Liu1Feixiang Sun2Lingyuan Yu3Jibo Wang4Zeyu Wang5Ke Han6Yucheng Lei7School of Materials Science&Engineering, Jiangsu University, Zhenjiang, 212013, China; Corresponding author.School of Materials Science&Engineering, Jiangsu University, Zhenjiang, 212013, ChinaChina Nuclear Power Technology Research Institute Co., Ltd, Shenzhen, 518000, ChinaSchool of Materials Science&Engineering, Jiangsu University, Zhenjiang, 212013, ChinaFujian Provincial Key Laboratory of Welding Quality Intelligent Evaluation, Longyan, 364012, China; Corresponding author.School of Materials Science&Engineering, Jiangsu University, Zhenjiang, 212013, ChinaSchool of Materials Science&Engineering, Jiangsu University, Zhenjiang, 212013, ChinaSchool of Materials Science&Engineering, Jiangsu University, Zhenjiang, 212013, ChinaThis paper aimed to investigate the feasibility of underwater wet welding for Inconel 625 alloy using Ni-based filler. The microstructure, elemental distribution, and properties of underwater wet welded Inconel 625 alloy joints were analyzed. The grain boundary type and grain growth orientation across the fusion boundary were particularly investigated. A continuous and smooth weld with no visible defects was obtained. The nickel based welds was fully austenite structure with extensive grain boundary migration. The heat-affected zone experienced obvious grain growth. A compositional transition zone with a width of 50 μm was observed across the fusion boundary. Apparent epitaxial growth across the fusion boundaries was found and the grain boundaries roughly perpendicular to the fusion boundaries are was mainly high angle grain boundaries. The density of low Σ CSL grain boundary in Inconel 625 base metal was higher than that in Ni-based weld metal. The ultimate tensile strength of underwater wet welded joints reached up to 83% that of Inconel 625 alloy. The impact toughness of HAZ was deteriorated because of the segregation of carbide and Laves phase in grain boundary. The corrosion resistance of Ni-based welds maintained at a high level based on the corrosion current density, although it was inferior to that of Inconel 625 alloy. The expected research results could enrich the underwater welding/repair technology of Ni-based alloy structures.http://www.sciencedirect.com/science/article/pii/S2238785422012686Inconel 625 alloyUnderwater wet weldingMicrostructureProperties |
| spellingShingle | Hongliang Li Shixiong Liu Feixiang Sun Lingyuan Yu Jibo Wang Zeyu Wang Ke Han Yucheng Lei Preliminary investigation on underwater wet welding of Inconel 625 alloy: microstructure, mechanical properties and corrosion resistance Journal of Materials Research and Technology Inconel 625 alloy Underwater wet welding Microstructure Properties |
| title | Preliminary investigation on underwater wet welding of Inconel 625 alloy: microstructure, mechanical properties and corrosion resistance |
| title_full | Preliminary investigation on underwater wet welding of Inconel 625 alloy: microstructure, mechanical properties and corrosion resistance |
| title_fullStr | Preliminary investigation on underwater wet welding of Inconel 625 alloy: microstructure, mechanical properties and corrosion resistance |
| title_full_unstemmed | Preliminary investigation on underwater wet welding of Inconel 625 alloy: microstructure, mechanical properties and corrosion resistance |
| title_short | Preliminary investigation on underwater wet welding of Inconel 625 alloy: microstructure, mechanical properties and corrosion resistance |
| title_sort | preliminary investigation on underwater wet welding of inconel 625 alloy microstructure mechanical properties and corrosion resistance |
| topic | Inconel 625 alloy Underwater wet welding Microstructure Properties |
| url | http://www.sciencedirect.com/science/article/pii/S2238785422012686 |
| work_keys_str_mv | AT hongliangli preliminaryinvestigationonunderwaterwetweldingofinconel625alloymicrostructuremechanicalpropertiesandcorrosionresistance AT shixiongliu preliminaryinvestigationonunderwaterwetweldingofinconel625alloymicrostructuremechanicalpropertiesandcorrosionresistance AT feixiangsun preliminaryinvestigationonunderwaterwetweldingofinconel625alloymicrostructuremechanicalpropertiesandcorrosionresistance AT lingyuanyu preliminaryinvestigationonunderwaterwetweldingofinconel625alloymicrostructuremechanicalpropertiesandcorrosionresistance AT jibowang preliminaryinvestigationonunderwaterwetweldingofinconel625alloymicrostructuremechanicalpropertiesandcorrosionresistance AT zeyuwang preliminaryinvestigationonunderwaterwetweldingofinconel625alloymicrostructuremechanicalpropertiesandcorrosionresistance AT kehan preliminaryinvestigationonunderwaterwetweldingofinconel625alloymicrostructuremechanicalpropertiesandcorrosionresistance AT yuchenglei preliminaryinvestigationonunderwaterwetweldingofinconel625alloymicrostructuremechanicalpropertiesandcorrosionresistance |