Solution and double aging treatments of cold sprayed inconel 718 coatings
Solution and double aging treatments of cold sprayed inconel 718 coatings
In this study, Inconel 718 coatings were deposited by the high-pressure cold spray technique, and post-process solution and double aging treatments were conducted. The microstructures of the as-deposited and heat-treated IN718 were analyzed, and their mechanical properties were tested. It was found that the micro-dendritic structures in the original powder were severely elongated in the as-deposited IN718 coating due to plastic deformation during the cold spray process. After solution heat treatment, Nb, Mo, and Ti-rich segregations could be dissolved, transforming to MC carbide and a needle-like δ phase. It was found that the needle-like δ phase at the grain boundary had a pinning effect to slow down the grain growth. In addition, strengthening phases could be formed by aging treatments. The mechanical properties of the cold sprayed Inconel 718 could be improved by proper solution and aging heat treatments.
Aging treatment, Cold spray, Inconel 718, Mechanical properties, Microstructure, Solution treatment
Sun, Wen
38403bb0-2b99-4958-b9ee-39b4016d0968
Chu, Xin
ecd7059d-578b-4650-b64c-6d2318c31e74
Huang, Jibo
10995926-dc43-423c-925c-0f7f93318851
Lan, Haiming
e5c39d29-763d-4945-a0bf-2ac5480192fc
Tan, Adrian Wei-Yee
3d644676-a520-4f41-b7f1-410d1c46689d
Huang, Renzhong
8d6fbf56-aa9e-4d78-9881-76f5734b7c51
Liu, Erjia
f0eb8f01-7079-4d8a-9687-f00250b31ffd
7 March 2022
Sun, Wen
38403bb0-2b99-4958-b9ee-39b4016d0968
Chu, Xin
ecd7059d-578b-4650-b64c-6d2318c31e74
Huang, Jibo
10995926-dc43-423c-925c-0f7f93318851
Lan, Haiming
e5c39d29-763d-4945-a0bf-2ac5480192fc
Tan, Adrian Wei-Yee
3d644676-a520-4f41-b7f1-410d1c46689d
Huang, Renzhong
8d6fbf56-aa9e-4d78-9881-76f5734b7c51
Liu, Erjia
f0eb8f01-7079-4d8a-9687-f00250b31ffd
Sun, Wen, Chu, Xin, Huang, Jibo, Lan, Haiming, Tan, Adrian Wei-Yee, Huang, Renzhong and Liu, Erjia
(2022)
Solution and double aging treatments of cold sprayed inconel 718 coatings.
Coatings, 12 (3), [347].
(doi:10.3390/coatings12030347).
Abstract
In this study, Inconel 718 coatings were deposited by the high-pressure cold spray technique, and post-process solution and double aging treatments were conducted. The microstructures of the as-deposited and heat-treated IN718 were analyzed, and their mechanical properties were tested. It was found that the micro-dendritic structures in the original powder were severely elongated in the as-deposited IN718 coating due to plastic deformation during the cold spray process. After solution heat treatment, Nb, Mo, and Ti-rich segregations could be dissolved, transforming to MC carbide and a needle-like δ phase. It was found that the needle-like δ phase at the grain boundary had a pinning effect to slow down the grain growth. In addition, strengthening phases could be formed by aging treatments. The mechanical properties of the cold sprayed Inconel 718 could be improved by proper solution and aging heat treatments.
Text
coatings-12-00347
- Version of Record
More information
Accepted/In Press date: 24 February 2022
Published date: 7 March 2022
Additional Information:
Funding Information:
Funding: Guangdong Academy of Sciences Special Fund for Comprehensive Industrial Technology Innovation Center Building (No. 2022GDASZH-2022010107); Key-Area Research and Development Program of Guangdong Province (No. 2020B0101330001); Science and Technology Program of Guangzhou (No. 202007020008).
Keywords:
Aging treatment, Cold spray, Inconel 718, Mechanical properties, Microstructure, Solution treatment
Identifiers
Local EPrints ID: 474295
URI: http://eprints.soton.ac.uk/id/eprint/474295
ISSN: 2079-6412
PURE UUID: 737c0f81-7127-4d9e-94b7-90287d69bf02
Catalogue record
Date deposited: 17 Feb 2023 17:37
Last modified: 17 Mar 2024 13:14
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Contributors
Author:
Wen Sun
Author:
Xin Chu
Author:
Jibo Huang
Author:
Haiming Lan
Author:
Adrian Wei-Yee Tan
Author:
Renzhong Huang
Author:
Erjia Liu
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