High temperature mechanical properties of diffusion welded alloy 800H
High temperature mechanical properties of diffusion welded Alloy 800H was investigated to fabricate a printed circuit heat exchanger (PCHE) for high temperature reactor (HTR) systems. Surface treatment was performed on Alloy 800H to transform the solubility product (Ksp) to exceed the reaction quoti...
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| Language: | English |
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Elsevier
2025-02-01
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| Series: | Nuclear Engineering and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S173857332400425X |
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| author | Jong-Bae Hwang Injin Sa Eung-Seon Kim Dong-Hyun Lee |
| author_facet | Jong-Bae Hwang Injin Sa Eung-Seon Kim Dong-Hyun Lee |
| author_sort | Jong-Bae Hwang |
| collection | DOAJ |
| description | High temperature mechanical properties of diffusion welded Alloy 800H was investigated to fabricate a printed circuit heat exchanger (PCHE) for high temperature reactor (HTR) systems. Surface treatment was performed on Alloy 800H to transform the solubility product (Ksp) to exceed the reaction quotient (Q). The surface treatment facilitated the grain boundary migration across the interface. The yield strengths exceeded the values described in ASME Section III Division 5 Table HBB-I-14.5 up to 760 °C, while the tensile strengths were comparable to Table HBB-3225-1 up to 700 °C. At 760 °C, the tensile strength was ∼30 MPa lower than the code. The stress-to-rupture values exceeded the expected minimum stress-to-rupture values of Alloy 800H described in Table HBB-I-14.6C. The ductility of the diffusion weldment acquired from the tensile test was comparable to the as-received Alloy 800H. Meanwhile, the formation of the secondary precipitates on the interface during the stress-to-rupture test deteriorated the ductility of the diffusion weldment, which induced intergranular fracture. |
| format | Article |
| id | doaj-art-ad3ccaf547dd4f91a95b68d8e1b3a3f2 |
| institution | Kabale University |
| issn | 1738-5733 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Engineering and Technology |
| spelling | doaj-art-ad3ccaf547dd4f91a95b68d8e1b3a3f22025-01-31T05:11:00ZengElsevierNuclear Engineering and Technology1738-57332025-02-01572103177High temperature mechanical properties of diffusion welded alloy 800HJong-Bae Hwang0Injin Sa1Eung-Seon Kim2Dong-Hyun Lee3Chungnam National University, Daehak-ro 99, Yuseong-gu, Daejeon 34134, Republic of Korea; Korea Atomic Energy Research Institute, Daedeok-daero 989-111, Yuseong-gu, Daejeon, 34057, Republic of KoreaKorea Atomic Energy Research Institute, Daedeok-daero 989-111, Yuseong-gu, Daejeon, 34057, Republic of KoreaKorea Atomic Energy Research Institute, Daedeok-daero 989-111, Yuseong-gu, Daejeon, 34057, Republic of Korea; Corresponding author.Chungnam National University, Daehak-ro 99, Yuseong-gu, Daejeon 34134, Republic of KoreaHigh temperature mechanical properties of diffusion welded Alloy 800H was investigated to fabricate a printed circuit heat exchanger (PCHE) for high temperature reactor (HTR) systems. Surface treatment was performed on Alloy 800H to transform the solubility product (Ksp) to exceed the reaction quotient (Q). The surface treatment facilitated the grain boundary migration across the interface. The yield strengths exceeded the values described in ASME Section III Division 5 Table HBB-I-14.5 up to 760 °C, while the tensile strengths were comparable to Table HBB-3225-1 up to 700 °C. At 760 °C, the tensile strength was ∼30 MPa lower than the code. The stress-to-rupture values exceeded the expected minimum stress-to-rupture values of Alloy 800H described in Table HBB-I-14.6C. The ductility of the diffusion weldment acquired from the tensile test was comparable to the as-received Alloy 800H. Meanwhile, the formation of the secondary precipitates on the interface during the stress-to-rupture test deteriorated the ductility of the diffusion weldment, which induced intergranular fracture.http://www.sciencedirect.com/science/article/pii/S173857332400425XAlloy 800HSurface treatmentDiffusion weldingMicrostructureTensile properties |
| spellingShingle | Jong-Bae Hwang Injin Sa Eung-Seon Kim Dong-Hyun Lee High temperature mechanical properties of diffusion welded alloy 800H Nuclear Engineering and Technology Alloy 800H Surface treatment Diffusion welding Microstructure Tensile properties |
| title | High temperature mechanical properties of diffusion welded alloy 800H |
| title_full | High temperature mechanical properties of diffusion welded alloy 800H |
| title_fullStr | High temperature mechanical properties of diffusion welded alloy 800H |
| title_full_unstemmed | High temperature mechanical properties of diffusion welded alloy 800H |
| title_short | High temperature mechanical properties of diffusion welded alloy 800H |
| title_sort | high temperature mechanical properties of diffusion welded alloy 800h |
| topic | Alloy 800H Surface treatment Diffusion welding Microstructure Tensile properties |
| url | http://www.sciencedirect.com/science/article/pii/S173857332400425X |
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