Improving microstructural and mechanical characteristics of cold-sprayed Inconel 718 deposits via local induction heat treatment
In order to improve the quality of cold sprayed Inconel 718 coatings, post heat treatment is an essential procedure. However, traditional furnace heat treatment methods present some disadvantages such as low efficiency and oxidation issues. This study presented a novel strategy for post heat treatme...
| Autors principals: | , , , , , , |
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| Format: | Journal Article |
| Idioma: | English |
| Publicat: |
2020
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| Accés en línia: | https://hdl.handle.net/10356/144721 |
| _version_ | 1826111067971911680 |
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| author | Sun, Wen Bhowmik, Ayan Tan, Adrian Wei-Yee Li, Ruitao Xue, Fei Marinescu, Iulian Liu, Erjia |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Sun, Wen Bhowmik, Ayan Tan, Adrian Wei-Yee Li, Ruitao Xue, Fei Marinescu, Iulian Liu, Erjia |
| author_sort | Sun, Wen |
| collection | NTU |
| description | In order to improve the quality of cold sprayed Inconel 718 coatings, post heat treatment is an essential procedure. However, traditional furnace heat treatment methods present some disadvantages such as low efficiency and oxidation issues. This study presented a novel strategy for post heat treatment of cold sprayed Inconel 718 coatings by using eddy current to generate heat as well as electron migration. The as-sprayed and heat-treated Inconel 718 coatings were analyzed by using optical microscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD) and transmission electron microscopy (TEM). The mechanical properties of the coatings were characterized by three-point bending tests. The TEM analyses indicated that the as-sprayed Inconel 718 coating possessed a high density of dislocations and {111} <11-2> twin bands due to a high degree of plastic strain. The results also showed that the eddy current field during the heat treatment could promote atomic motions and assist recovery of the severely deformed splats, thus resulting in a significant reduction in dislocation density within the cold sprayed IN718 coatings. Besides, the induction heat treatment increased the flexural strength and ductility of the cold sprayed IN718 coatings due to that the eddy current promoted mass transport between the splats. Therefore, the induction heat treatment is a promising method for locally heat treating cold spray repaired areas. |
| first_indexed | 2024-10-01T02:44:52Z |
| format | Journal Article |
| id | ntu-10356/144721 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:44:52Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1447212023-03-04T17:12:30Z Improving microstructural and mechanical characteristics of cold-sprayed Inconel 718 deposits via local induction heat treatment Sun, Wen Bhowmik, Ayan Tan, Adrian Wei-Yee Li, Ruitao Xue, Fei Marinescu, Iulian Liu, Erjia School of Mechanical and Aerospace Engineering School of Materials Science and Engineering Rolls-Royce@NTU Corporate Lab Engineering::Mechanical engineering Inconel 718 High Pressure Cold Spray In order to improve the quality of cold sprayed Inconel 718 coatings, post heat treatment is an essential procedure. However, traditional furnace heat treatment methods present some disadvantages such as low efficiency and oxidation issues. This study presented a novel strategy for post heat treatment of cold sprayed Inconel 718 coatings by using eddy current to generate heat as well as electron migration. The as-sprayed and heat-treated Inconel 718 coatings were analyzed by using optical microscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD) and transmission electron microscopy (TEM). The mechanical properties of the coatings were characterized by three-point bending tests. The TEM analyses indicated that the as-sprayed Inconel 718 coating possessed a high density of dislocations and {111} <11-2> twin bands due to a high degree of plastic strain. The results also showed that the eddy current field during the heat treatment could promote atomic motions and assist recovery of the severely deformed splats, thus resulting in a significant reduction in dislocation density within the cold sprayed IN718 coatings. Besides, the induction heat treatment increased the flexural strength and ductility of the cold sprayed IN718 coatings due to that the eddy current promoted mass transport between the splats. Therefore, the induction heat treatment is a promising method for locally heat treating cold spray repaired areas. Agency for Science, Technology and Research (A*STAR) National Research Foundation (NRF) Accepted version This work wasfinancially supported by the National ResearchFoundation of Singapore (NRF), Rolls-Royce (RR) and NanyangTechnological University (NTU), with the research grant: M-RT 3.1,and by Industry Alignment Fund (IAF) of Singapore A*STAR, RR andNTU with the research grant: ARMS 1.1. Wen Sun was grateful forthe Ph.D. scholarship from the RR@NTU Corporate Lab and NTU. 2020-11-20T06:28:21Z 2020-11-20T06:28:21Z 2019 Journal Article Sun, W., Bhowmik, A., Tan, A. W.-Y., Li, R., Xue, F., Marinescu, I., & Liu, E. (2019). Improving microstructural and mechanical characteristics of cold-sprayed Inconel 718 deposits via local induction heat treatment. Journal of Alloys and Compounds, 797, 1268–1279. doi:10.1016/j.jallcom.2019.05.099 0925-8388 https://hdl.handle.net/10356/144721 10.1016/j.jallcom.2019.05.099 797 1268 1279 en Journal of Alloys and Compounds © 2019 Elsevier B.V. All rights reserved. This paper was published in Journal of Alloys and Compounds and is made available with permission of Elsevier B.V. application/pdf |
| spellingShingle | Engineering::Mechanical engineering Inconel 718 High Pressure Cold Spray Sun, Wen Bhowmik, Ayan Tan, Adrian Wei-Yee Li, Ruitao Xue, Fei Marinescu, Iulian Liu, Erjia Improving microstructural and mechanical characteristics of cold-sprayed Inconel 718 deposits via local induction heat treatment |
| title | Improving microstructural and mechanical characteristics of cold-sprayed Inconel 718 deposits via local induction heat treatment |
| title_full | Improving microstructural and mechanical characteristics of cold-sprayed Inconel 718 deposits via local induction heat treatment |
| title_fullStr | Improving microstructural and mechanical characteristics of cold-sprayed Inconel 718 deposits via local induction heat treatment |
| title_full_unstemmed | Improving microstructural and mechanical characteristics of cold-sprayed Inconel 718 deposits via local induction heat treatment |
| title_short | Improving microstructural and mechanical characteristics of cold-sprayed Inconel 718 deposits via local induction heat treatment |
| title_sort | improving microstructural and mechanical characteristics of cold sprayed inconel 718 deposits via local induction heat treatment |
| topic | Engineering::Mechanical engineering Inconel 718 High Pressure Cold Spray |
| url | https://hdl.handle.net/10356/144721 |
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