Microstructure Characterization and Mechanical Property of the GH4065A Superalloy Inertia Friction Welded Joints
Structural characteristics and design requirements for the integration of the integral rotor and disc shaft of the engine, the welding quality, and mechanical properties of superalloy weldments have received more and more attention in recent years. Inertia friction welding (IFW) was carried out with...
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| Format: | Article |
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MDPI AG
2022-08-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/12/8/1390 |
| _version_ | 1797408860115304448 |
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| author | Zhaotian Wang Shuo Huang Wenyun Zhang Beijiang Zhang Yongquan Ning |
| author_facet | Zhaotian Wang Shuo Huang Wenyun Zhang Beijiang Zhang Yongquan Ning |
| author_sort | Zhaotian Wang |
| collection | DOAJ |
| description | Structural characteristics and design requirements for the integration of the integral rotor and disc shaft of the engine, the welding quality, and mechanical properties of superalloy weldments have received more and more attention in recent years. Inertia friction welding (IFW) was carried out with the typical fiber structure of the solid solution GH4065A alloy as the research object, the microstructure evolution rules of the plastic deformation zone (PDMZ), the thermally affected zone (TMAZ), and the welding zone (WZ) were studied, and the formation mechanism of metallurgical joints was explored. The size difference of the γ′ phase at the grain boundary and in the fiber structure was revealed. The reason is that the γ′ phase located at the grain boundary has lower diffusion activation energy and higher diffusion rate. The microhardness and tensile properties of the IFW joints were explored, the study found that the microhardness of the TAMZ is the highest, followed by the PDMZ and the WZ. The tensile test results show that with the increase in temperature, the fracture position shifts from the BM to the WZ, the microstructure at the fracture changed significantly, and the yield strength decreased from 1372 to 1085 MPa. |
| first_indexed | 2024-03-09T04:05:44Z |
| format | Article |
| id | doaj.art-906acc0d414947269a21c43e0b902441 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-09T04:05:44Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-906acc0d414947269a21c43e0b9024412023-12-03T14:07:26ZengMDPI AGMetals2075-47012022-08-01128139010.3390/met12081390Microstructure Characterization and Mechanical Property of the GH4065A Superalloy Inertia Friction Welded JointsZhaotian Wang0Shuo Huang1Wenyun Zhang2Beijiang Zhang3Yongquan Ning4School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, ChinaHigh Temperature Materials Research Division, Central Iron & Steel Research Institute, Beijing 100081, ChinaHigh Temperature Materials Research Division, Central Iron & Steel Research Institute, Beijing 100081, ChinaHigh Temperature Materials Research Division, Central Iron & Steel Research Institute, Beijing 100081, ChinaSchool of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, ChinaStructural characteristics and design requirements for the integration of the integral rotor and disc shaft of the engine, the welding quality, and mechanical properties of superalloy weldments have received more and more attention in recent years. Inertia friction welding (IFW) was carried out with the typical fiber structure of the solid solution GH4065A alloy as the research object, the microstructure evolution rules of the plastic deformation zone (PDMZ), the thermally affected zone (TMAZ), and the welding zone (WZ) were studied, and the formation mechanism of metallurgical joints was explored. The size difference of the γ′ phase at the grain boundary and in the fiber structure was revealed. The reason is that the γ′ phase located at the grain boundary has lower diffusion activation energy and higher diffusion rate. The microhardness and tensile properties of the IFW joints were explored, the study found that the microhardness of the TAMZ is the highest, followed by the PDMZ and the WZ. The tensile test results show that with the increase in temperature, the fracture position shifts from the BM to the WZ, the microstructure at the fracture changed significantly, and the yield strength decreased from 1372 to 1085 MPa.https://www.mdpi.com/2075-4701/12/8/1390GH4065Ainertia friction welding (IFW)microstructureγ′ phasemicrohardnesstensile properties |
| spellingShingle | Zhaotian Wang Shuo Huang Wenyun Zhang Beijiang Zhang Yongquan Ning Microstructure Characterization and Mechanical Property of the GH4065A Superalloy Inertia Friction Welded Joints Metals GH4065A inertia friction welding (IFW) microstructure γ′ phase microhardness tensile properties |
| title | Microstructure Characterization and Mechanical Property of the GH4065A Superalloy Inertia Friction Welded Joints |
| title_full | Microstructure Characterization and Mechanical Property of the GH4065A Superalloy Inertia Friction Welded Joints |
| title_fullStr | Microstructure Characterization and Mechanical Property of the GH4065A Superalloy Inertia Friction Welded Joints |
| title_full_unstemmed | Microstructure Characterization and Mechanical Property of the GH4065A Superalloy Inertia Friction Welded Joints |
| title_short | Microstructure Characterization and Mechanical Property of the GH4065A Superalloy Inertia Friction Welded Joints |
| title_sort | microstructure characterization and mechanical property of the gh4065a superalloy inertia friction welded joints |
| topic | GH4065A inertia friction welding (IFW) microstructure γ′ phase microhardness tensile properties |
| url | https://www.mdpi.com/2075-4701/12/8/1390 |
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