Effect of welding parameters on microstructure and high temperature tensile properties of FGH96 superalloy inertial friction welded joints
This study aims to evaluate the FGH96 superalloy joints fabricated by inertia friction welding (IFW) in different welding parameters, such as initial rotational speed and axial friction pressure, where the moment of inertia remained constant. The microstructure and the width of the weld nugget zone...
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| Format: | Article |
| Language: | zho |
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Journal of Aeronautical Materials
2019-02-01
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| Series: | Journal of Aeronautical Materials |
| Subjects: | |
| Online Access: | http://jam.biam.ac.cn/CN/Y2019/V39/I2/33 |
| _version_ | 1828231980468142080 |
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| author | YANG Jun LI Jinglong DONG Dengke LIAO Jianghai |
| author_facet | YANG Jun LI Jinglong DONG Dengke LIAO Jianghai |
| author_sort | YANG Jun |
| collection | DOAJ |
| description | This study aims to evaluate the FGH96 superalloy joints fabricated by inertia friction welding (IFW) in different welding parameters, such as initial rotational speed and axial friction pressure, where the moment of inertia remained constant. The microstructure and the width of the weld nugget zone (WNZ) were analyzed, and tensile property of joints was examined. The effect of welding parameters on high temperature tensile property of FGH96 joints was investigated. The results show that the joint presents a significant microstructure change across the faying interface, characterized by the very small uniform equiaxed grains of WNZ, coarse and fine grain coexistence of the thermo-mechanically affected zone (TMAZ). As the rotation speed increases, the tensile property remains constant. However, with increasing friction pressure, they show a substantial increase.The change tendency of the width of WNZ with welding parameters is in agreement with that of tensile property, which is related to the weld heat input and the plastic flow of the material. The high temperature tensile specimens are fractured in the WNZ. This is related to the complete γ′-phase dissolution which softens the joint and decreases the joint tensile property. Therefore, the post-weld heat treatments are necessary for IFW FGH96 superalloy in order to further improve the joint properties. |
| first_indexed | 2024-04-12T19:13:30Z |
| format | Article |
| id | doaj.art-539d399f7b4144548250c02a4ee07e63 |
| institution | Directory Open Access Journal |
| issn | 1005-5053 1005-5053 |
| language | zho |
| last_indexed | 2024-04-12T19:13:30Z |
| publishDate | 2019-02-01 |
| publisher | Journal of Aeronautical Materials |
| record_format | Article |
| series | Journal of Aeronautical Materials |
| spelling | doaj.art-539d399f7b4144548250c02a4ee07e632022-12-22T03:19:48ZzhoJournal of Aeronautical MaterialsJournal of Aeronautical Materials1005-50531005-50532019-02-01392334110.11868/j.issn.1005-5053.2018.000141201902000141Effect of welding parameters on microstructure and high temperature tensile properties of FGH96 superalloy inertial friction welded jointsYANG Jun0LI Jinglong1DONG Dengke2LIAO Jianghai3Shaanxi Key Laboratory of Friction Welding Technologies, Northwestern Polytechnical University, Xi’an 710072, ChinaShaanxi Key Laboratory of Friction Welding Technologies, Northwestern Polytechnical University, Xi’an 710072, ChinaMetallic Structure Strength Laboratory, Aircraft Strength Research of China, Xi’an 710065, ChinaMetallic Structure Strength Laboratory, Aircraft Strength Research of China, Xi’an 710065, ChinaThis study aims to evaluate the FGH96 superalloy joints fabricated by inertia friction welding (IFW) in different welding parameters, such as initial rotational speed and axial friction pressure, where the moment of inertia remained constant. The microstructure and the width of the weld nugget zone (WNZ) were analyzed, and tensile property of joints was examined. The effect of welding parameters on high temperature tensile property of FGH96 joints was investigated. The results show that the joint presents a significant microstructure change across the faying interface, characterized by the very small uniform equiaxed grains of WNZ, coarse and fine grain coexistence of the thermo-mechanically affected zone (TMAZ). As the rotation speed increases, the tensile property remains constant. However, with increasing friction pressure, they show a substantial increase.The change tendency of the width of WNZ with welding parameters is in agreement with that of tensile property, which is related to the weld heat input and the plastic flow of the material. The high temperature tensile specimens are fractured in the WNZ. This is related to the complete γ′-phase dissolution which softens the joint and decreases the joint tensile property. Therefore, the post-weld heat treatments are necessary for IFW FGH96 superalloy in order to further improve the joint properties.http://jam.biam.ac.cn/CN/Y2019/V39/I2/33FGH96 superalloyinertial friction weldingwelding process parametersγ′-phasewidth of weld nugget zonehigh temperature tensile properties |
| spellingShingle | YANG Jun LI Jinglong DONG Dengke LIAO Jianghai Effect of welding parameters on microstructure and high temperature tensile properties of FGH96 superalloy inertial friction welded joints Journal of Aeronautical Materials FGH96 superalloy inertial friction welding welding process parameters γ′-phase width of weld nugget zone high temperature tensile properties |
| title | Effect of welding parameters on microstructure and high temperature tensile properties of FGH96 superalloy inertial friction welded joints |
| title_full | Effect of welding parameters on microstructure and high temperature tensile properties of FGH96 superalloy inertial friction welded joints |
| title_fullStr | Effect of welding parameters on microstructure and high temperature tensile properties of FGH96 superalloy inertial friction welded joints |
| title_full_unstemmed | Effect of welding parameters on microstructure and high temperature tensile properties of FGH96 superalloy inertial friction welded joints |
| title_short | Effect of welding parameters on microstructure and high temperature tensile properties of FGH96 superalloy inertial friction welded joints |
| title_sort | effect of welding parameters on microstructure and high temperature tensile properties of fgh96 superalloy inertial friction welded joints |
| topic | FGH96 superalloy inertial friction welding welding process parameters γ′-phase width of weld nugget zone high temperature tensile properties |
| url | http://jam.biam.ac.cn/CN/Y2019/V39/I2/33 |
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