Effect of Heat Treatment on Tensile Properties of Deposited Metal from a New Nitrogen-Containing Nickel-Based Flux-Cored Welding Wire
This study uses a new type of nitrogen-containing nickel-based flux-cored welding wire to study the microstructure and tensile properties of the deposited metal at 600 –700 °C. The results indicate that the precipitation phases of deposited metal mainly include the M (C, N) phase, Laves phase, and γ...
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MDPI AG
2025-05-01
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| Online Access: | https://www.mdpi.com/2073-4352/15/6/509 |
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| author | Yingdi Wang Yunhai Su Yingdong Wang |
| author_facet | Yingdi Wang Yunhai Su Yingdong Wang |
| author_sort | Yingdi Wang |
| collection | DOAJ |
| description | This study uses a new type of nitrogen-containing nickel-based flux-cored welding wire to study the microstructure and tensile properties of the deposited metal at 600 –700 °C. The results indicate that the precipitation phases of deposited metal mainly include the M (C, N) phase, Laves phase, and γ′ phase. After solution and aging treatment, the Laves phase remelts into the substrate. Nano-sized M (C, N) phase particles precipitate inside the grains, while the M<sub>23</sub>C<sub>6</sub> phase forms at the grain boundaries. When stretched at 600 °C, the main deformation mechanism of the as-welded specimen is the cutting of precipitated phases by a/2<110> unit dislocations. The ultimate tensile strength of the heat-treated sample is much higher than that of the as-welded sample, but the ductility is reduced. The deformation mechanism involves not only the a/2<110>matrix dislocation cutting precipitation phase, but also two a/6<121>incomplete dislocation cutting precipitation phases together to form stacked dislocations. When stretched at 700 °C, dislocation loops appeared in the SA sample, indicating that the dislocation bypass mechanism had been activated. The tensile deformation mechanism of the deposited metal achieved a transition from dislocation cutting precipitated phases to dislocation bypassing precipitated phases. |
| format | Article |
| id | doaj-art-eb750d5fe35c437e8a18653206e970fe |
| institution | OA Journals |
| issn | 2073-4352 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
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| series | Crystals |
| spelling | doaj-art-eb750d5fe35c437e8a18653206e970fe2025-08-20T02:24:38ZengMDPI AGCrystals2073-43522025-05-0115650910.3390/cryst15060509Effect of Heat Treatment on Tensile Properties of Deposited Metal from a New Nitrogen-Containing Nickel-Based Flux-Cored Welding WireYingdi Wang0Yunhai Su1Yingdong Wang2Department of Transportation Engineering, Yantai Vocational College, Yantai 264670, ChinaSchool of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, ChinaDepartment of Transportation Engineering, Yantai Vocational College, Yantai 264670, ChinaThis study uses a new type of nitrogen-containing nickel-based flux-cored welding wire to study the microstructure and tensile properties of the deposited metal at 600 –700 °C. The results indicate that the precipitation phases of deposited metal mainly include the M (C, N) phase, Laves phase, and γ′ phase. After solution and aging treatment, the Laves phase remelts into the substrate. Nano-sized M (C, N) phase particles precipitate inside the grains, while the M<sub>23</sub>C<sub>6</sub> phase forms at the grain boundaries. When stretched at 600 °C, the main deformation mechanism of the as-welded specimen is the cutting of precipitated phases by a/2<110> unit dislocations. The ultimate tensile strength of the heat-treated sample is much higher than that of the as-welded sample, but the ductility is reduced. The deformation mechanism involves not only the a/2<110>matrix dislocation cutting precipitation phase, but also two a/6<121>incomplete dislocation cutting precipitation phases together to form stacked dislocations. When stretched at 700 °C, dislocation loops appeared in the SA sample, indicating that the dislocation bypass mechanism had been activated. The tensile deformation mechanism of the deposited metal achieved a transition from dislocation cutting precipitated phases to dislocation bypassing precipitated phases.https://www.mdpi.com/2073-4352/15/6/509heat treatmentnitrogen-containing nickel-based deposited metalsmicrostructuredeformation mechanism |
| spellingShingle | Yingdi Wang Yunhai Su Yingdong Wang Effect of Heat Treatment on Tensile Properties of Deposited Metal from a New Nitrogen-Containing Nickel-Based Flux-Cored Welding Wire Crystals heat treatment nitrogen-containing nickel-based deposited metals microstructure deformation mechanism |
| title | Effect of Heat Treatment on Tensile Properties of Deposited Metal from a New Nitrogen-Containing Nickel-Based Flux-Cored Welding Wire |
| title_full | Effect of Heat Treatment on Tensile Properties of Deposited Metal from a New Nitrogen-Containing Nickel-Based Flux-Cored Welding Wire |
| title_fullStr | Effect of Heat Treatment on Tensile Properties of Deposited Metal from a New Nitrogen-Containing Nickel-Based Flux-Cored Welding Wire |
| title_full_unstemmed | Effect of Heat Treatment on Tensile Properties of Deposited Metal from a New Nitrogen-Containing Nickel-Based Flux-Cored Welding Wire |
| title_short | Effect of Heat Treatment on Tensile Properties of Deposited Metal from a New Nitrogen-Containing Nickel-Based Flux-Cored Welding Wire |
| title_sort | effect of heat treatment on tensile properties of deposited metal from a new nitrogen containing nickel based flux cored welding wire |
| topic | heat treatment nitrogen-containing nickel-based deposited metals microstructure deformation mechanism |
| url | https://www.mdpi.com/2073-4352/15/6/509 |
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