Formation of intermetallic and its effect on the hardening of welding joint between vanadium alloy and Hastelloy X alloy after heat treatment
Vanadium alloy and Hastelloy X alloy was jointed by explosive welding (EXW), followed by post-weld heat treatment (PWHT). The formation of intermetallic within the welding joint and its effect on hardening were investigated. In terms of morphology, the joint after EXW is characterized by typical wav...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-03-01
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| Series: | Nuclear Materials and Energy |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352179123000285 |
| _version_ | 1811154355939704832 |
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| author | Shaoning Jiang Jingjie Shen Takuya Nagasaka Takeo Muroga Akio Sagara Somei Ohnuki Kazuyuki Hokamoto Weifeng Rao Shigeru Tanaka Daisuke Inao Yasuhiro Morizono Ryuta Kasada Pengfei Zheng |
| author_facet | Shaoning Jiang Jingjie Shen Takuya Nagasaka Takeo Muroga Akio Sagara Somei Ohnuki Kazuyuki Hokamoto Weifeng Rao Shigeru Tanaka Daisuke Inao Yasuhiro Morizono Ryuta Kasada Pengfei Zheng |
| author_sort | Shaoning Jiang |
| collection | DOAJ |
| description | Vanadium alloy and Hastelloy X alloy was jointed by explosive welding (EXW), followed by post-weld heat treatment (PWHT). The formation of intermetallic within the welding joint and its effect on hardening were investigated. In terms of morphology, the joint after EXW is characterized by typical waved interface with discontinuous vortex. The cross-sectional samples at the vortex indicate that an interlayer between NH2 and HX formed after EXW and PWHT. The microstructure evolution and corresponding hardness of the interlayer were analyzed. The microstructural observation showed that the interlayer after EXW exists as solid solution with high-density dislocations. The solid solution with a structure of FCC is a mixture of vanadium alloy and Hastelloy X alloy. The hardening is attributed to solid solution and dislocations. After PWHT at 500 °C, the interlayer still exists in the form of solid solution, whose chemical composition is similar with that at the interlayer after EXW. Dislocation density decreases a little, which causes lower hardness compared with that after EXW. After PWHT above 700 °C, Ni3Ti intermetallics form, whose size increases and density decreases at 900 °C, and make a dominant contribution to the hardness. |
| first_indexed | 2024-04-10T04:15:26Z |
| format | Article |
| id | doaj.art-d577895a23634112ac076f7aaf34047c |
| institution | Directory Open Access Journal |
| issn | 2352-1791 |
| language | English |
| last_indexed | 2024-04-10T04:15:26Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Materials and Energy |
| spelling | doaj.art-d577895a23634112ac076f7aaf34047c2023-03-12T04:21:34ZengElsevierNuclear Materials and Energy2352-17912023-03-0134101389Formation of intermetallic and its effect on the hardening of welding joint between vanadium alloy and Hastelloy X alloy after heat treatmentShaoning Jiang0Jingjie Shen1Takuya Nagasaka2Takeo Muroga3Akio Sagara4Somei Ohnuki5Kazuyuki Hokamoto6Weifeng Rao7Shigeru Tanaka8Daisuke Inao9Yasuhiro Morizono10Ryuta Kasada11Pengfei Zheng12School of Mechanical Engineering Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China; Shandong Institute of Mechanical Design and Research, Jinan 250031, China; Corresponding author at: School of Mechanical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.National Institute for Fusion Science, Toki 509-5292, JapanNational Institute for Fusion Science, Toki 509-5292, JapanNational Institute for Fusion Science, Toki 509-5292, JapanNational Institute for Fusion Science, Toki 509-5292, JapanUniversity of Science and Technology Beijing, Beijing 100083, ChinaInstitute of Industrial Nanomaterials, Kumamoto University, Kumamoto 860-8555, JapanSchool of Mechanical Engineering Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China; Shandong Institute of Mechanical Design and Research, Jinan 250031, ChinaInstitute of Industrial Nanomaterials, Kumamoto University, Kumamoto 860-8555, JapanInstitute of Industrial Nanomaterials, Kumamoto University, Kumamoto 860-8555, JapanNational Institute for Technology, Kurume College, 830-8555 Kurume, JapanInstitute for Materials Research, Tohoku University, Sendai 980-8577, JapanSouthwestern Institute of Physics, Chengdu 610041, ChinaVanadium alloy and Hastelloy X alloy was jointed by explosive welding (EXW), followed by post-weld heat treatment (PWHT). The formation of intermetallic within the welding joint and its effect on hardening were investigated. In terms of morphology, the joint after EXW is characterized by typical waved interface with discontinuous vortex. The cross-sectional samples at the vortex indicate that an interlayer between NH2 and HX formed after EXW and PWHT. The microstructure evolution and corresponding hardness of the interlayer were analyzed. The microstructural observation showed that the interlayer after EXW exists as solid solution with high-density dislocations. The solid solution with a structure of FCC is a mixture of vanadium alloy and Hastelloy X alloy. The hardening is attributed to solid solution and dislocations. After PWHT at 500 °C, the interlayer still exists in the form of solid solution, whose chemical composition is similar with that at the interlayer after EXW. Dislocation density decreases a little, which causes lower hardness compared with that after EXW. After PWHT above 700 °C, Ni3Ti intermetallics form, whose size increases and density decreases at 900 °C, and make a dominant contribution to the hardness.http://www.sciencedirect.com/science/article/pii/S2352179123000285Post-weld heat treatmentSolid solutionDislocationIntermetallicHardness |
| spellingShingle | Shaoning Jiang Jingjie Shen Takuya Nagasaka Takeo Muroga Akio Sagara Somei Ohnuki Kazuyuki Hokamoto Weifeng Rao Shigeru Tanaka Daisuke Inao Yasuhiro Morizono Ryuta Kasada Pengfei Zheng Formation of intermetallic and its effect on the hardening of welding joint between vanadium alloy and Hastelloy X alloy after heat treatment Nuclear Materials and Energy Post-weld heat treatment Solid solution Dislocation Intermetallic Hardness |
| title | Formation of intermetallic and its effect on the hardening of welding joint between vanadium alloy and Hastelloy X alloy after heat treatment |
| title_full | Formation of intermetallic and its effect on the hardening of welding joint between vanadium alloy and Hastelloy X alloy after heat treatment |
| title_fullStr | Formation of intermetallic and its effect on the hardening of welding joint between vanadium alloy and Hastelloy X alloy after heat treatment |
| title_full_unstemmed | Formation of intermetallic and its effect on the hardening of welding joint between vanadium alloy and Hastelloy X alloy after heat treatment |
| title_short | Formation of intermetallic and its effect on the hardening of welding joint between vanadium alloy and Hastelloy X alloy after heat treatment |
| title_sort | formation of intermetallic and its effect on the hardening of welding joint between vanadium alloy and hastelloy x alloy after heat treatment |
| topic | Post-weld heat treatment Solid solution Dislocation Intermetallic Hardness |
| url | http://www.sciencedirect.com/science/article/pii/S2352179123000285 |
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