Effect of Turning and Surface Polishing Treatments on Surface Integrity and Fatigue Performance of Nickel-Based Alloy GH4169
In this paper, the effects of turning and surface polishing treatments on surface integrity and fatigue properties of superalloy GH4169 were investigated. Finish turning (FT), surface circumferential polishing treatment (TCP), surface oblique texture (TCPO), and surface axial texture (TCPA) were app...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-07-01
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| Series: | Metals |
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| Online Access: | http://www.mdpi.com/2075-4701/8/7/549 |
| _version_ | 1818081905913888768 |
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| author | Daoxia Wu Dinghua Zhang Changfeng Yao |
| author_facet | Daoxia Wu Dinghua Zhang Changfeng Yao |
| author_sort | Daoxia Wu |
| collection | DOAJ |
| description | In this paper, the effects of turning and surface polishing treatments on surface integrity and fatigue properties of superalloy GH4169 were investigated. Finish turning (FT), surface circumferential polishing treatment (TCP), surface oblique texture (TCPO), and surface axial texture (TCPA) were applied to GH4169 superalloy. The surface roughness, surface topography, residual stress, microhardness, and microstructure after different processes were studied. Rotating bending fatigue tests were carried out to investigate the effects of surface integrity and surface texture direction on the fatigue performance of GH4169. The experiments reveal that the TCPA specimens present the longest fatigue life of 15.01 × 104 cycles. By comparison with the FT, TCP, and TCPO specimens, the fatigue lives of TCPA specimens are increased by 134.2%, 183.7%, and 96.2%, respectively. Single crack initiation source is observed for TCPA specimen. It is mainly attributed to the small surface stress concentration factor and surface axial texture. |
| first_indexed | 2024-12-10T19:13:38Z |
| format | Article |
| id | doaj.art-b8fb322dfeff4421bf19dde1f307781b |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-10T19:13:38Z |
| publishDate | 2018-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-b8fb322dfeff4421bf19dde1f307781b2022-12-22T01:36:39ZengMDPI AGMetals2075-47012018-07-018754910.3390/met8070549met8070549Effect of Turning and Surface Polishing Treatments on Surface Integrity and Fatigue Performance of Nickel-Based Alloy GH4169Daoxia Wu0Dinghua Zhang1Changfeng Yao2The Key Laboratory of Contemporary Design and Integrated Manufacturing Technology, Ministry of Education, Northwestern Polytechnical University, Xi’an 710072, ChinaThe Key Laboratory of Contemporary Design and Integrated Manufacturing Technology, Ministry of Education, Northwestern Polytechnical University, Xi’an 710072, ChinaThe Key Laboratory of Contemporary Design and Integrated Manufacturing Technology, Ministry of Education, Northwestern Polytechnical University, Xi’an 710072, ChinaIn this paper, the effects of turning and surface polishing treatments on surface integrity and fatigue properties of superalloy GH4169 were investigated. Finish turning (FT), surface circumferential polishing treatment (TCP), surface oblique texture (TCPO), and surface axial texture (TCPA) were applied to GH4169 superalloy. The surface roughness, surface topography, residual stress, microhardness, and microstructure after different processes were studied. Rotating bending fatigue tests were carried out to investigate the effects of surface integrity and surface texture direction on the fatigue performance of GH4169. The experiments reveal that the TCPA specimens present the longest fatigue life of 15.01 × 104 cycles. By comparison with the FT, TCP, and TCPO specimens, the fatigue lives of TCPA specimens are increased by 134.2%, 183.7%, and 96.2%, respectively. Single crack initiation source is observed for TCPA specimen. It is mainly attributed to the small surface stress concentration factor and surface axial texture.http://www.mdpi.com/2075-4701/8/7/549GH4169 superalloysurface integritysurface texture directionfatigue lifefracture morphology |
| spellingShingle | Daoxia Wu Dinghua Zhang Changfeng Yao Effect of Turning and Surface Polishing Treatments on Surface Integrity and Fatigue Performance of Nickel-Based Alloy GH4169 Metals GH4169 superalloy surface integrity surface texture direction fatigue life fracture morphology |
| title | Effect of Turning and Surface Polishing Treatments on Surface Integrity and Fatigue Performance of Nickel-Based Alloy GH4169 |
| title_full | Effect of Turning and Surface Polishing Treatments on Surface Integrity and Fatigue Performance of Nickel-Based Alloy GH4169 |
| title_fullStr | Effect of Turning and Surface Polishing Treatments on Surface Integrity and Fatigue Performance of Nickel-Based Alloy GH4169 |
| title_full_unstemmed | Effect of Turning and Surface Polishing Treatments on Surface Integrity and Fatigue Performance of Nickel-Based Alloy GH4169 |
| title_short | Effect of Turning and Surface Polishing Treatments on Surface Integrity and Fatigue Performance of Nickel-Based Alloy GH4169 |
| title_sort | effect of turning and surface polishing treatments on surface integrity and fatigue performance of nickel based alloy gh4169 |
| topic | GH4169 superalloy surface integrity surface texture direction fatigue life fracture morphology |
| url | http://www.mdpi.com/2075-4701/8/7/549 |
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