Effect of Heat Treatment on Microstructure and Mechanical Properties of a Selective Laser Melting Processed Ni-Based Superalloy GTD222
Additive manufacturing (AM) of nickel-based superalloys is of high interest for application in complex hot end parts. However, it has been widely suggested that the microstructure-properties of the additive manufacturing processed superalloys are not yet fully clear. In this study, the GTD222, an im...
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| Format: | Article |
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MDPI AG
2021-06-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/14/13/3668 |
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| author | Tian Xia Rui Wang Zhongnan Bi Guoliang Zhu Qingbiao Tan Rui Wang Ji Zhang |
| author_facet | Tian Xia Rui Wang Zhongnan Bi Guoliang Zhu Qingbiao Tan Rui Wang Ji Zhang |
| author_sort | Tian Xia |
| collection | DOAJ |
| description | Additive manufacturing (AM) of nickel-based superalloys is of high interest for application in complex hot end parts. However, it has been widely suggested that the microstructure-properties of the additive manufacturing processed superalloys are not yet fully clear. In this study, the GTD222, an important superalloy for high-temperature hot-end part, were prepared using selective laser melting and then subjected to heat treatment. The microstructure evolution of the GTD222 was investigated and the mechanical properties of heat treated GTD222 were tested. The results have shown that the grain size of the heat treated GTD222 was close to its as-built counterparts. Meanwhile, a large amount of γ’ and nano-scaled carbides were precipitated in the heat treated GTD222. The microstructure characteristics implied that the higher strength of the heat treated GTD222 can be attributed to the γ’ and nano-scaled carbides. This study provides essential microstructure and mechanical properties information for optimizing the heat treatment process of the AM processed GTD222. |
| first_indexed | 2024-03-10T09:53:40Z |
| format | Article |
| id | doaj.art-53ffa0448ec64376a2a059e1152795f7 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T09:53:40Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-53ffa0448ec64376a2a059e1152795f72023-11-22T02:29:20ZengMDPI AGMaterials1996-19442021-06-011413366810.3390/ma14133668Effect of Heat Treatment on Microstructure and Mechanical Properties of a Selective Laser Melting Processed Ni-Based Superalloy GTD222Tian Xia0Rui Wang1Zhongnan Bi2Guoliang Zhu3Qingbiao Tan4Rui Wang5Ji Zhang6High-Temperature Materials Department, Central Iron & Steel Research Institute, Beijing 100081, ChinaHigh-Temperature Materials Department, Central Iron & Steel Research Institute, Beijing 100081, ChinaHigh-Temperature Materials Department, Central Iron & Steel Research Institute, Beijing 100081, ChinaShanghai Key Laboratory of Advanced High-Temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaShanghai Key Laboratory of Advanced High-Temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaHigh-Temperature Materials Department, Central Iron & Steel Research Institute, Beijing 100081, ChinaHigh-Temperature Materials Department, Central Iron & Steel Research Institute, Beijing 100081, ChinaAdditive manufacturing (AM) of nickel-based superalloys is of high interest for application in complex hot end parts. However, it has been widely suggested that the microstructure-properties of the additive manufacturing processed superalloys are not yet fully clear. In this study, the GTD222, an important superalloy for high-temperature hot-end part, were prepared using selective laser melting and then subjected to heat treatment. The microstructure evolution of the GTD222 was investigated and the mechanical properties of heat treated GTD222 were tested. The results have shown that the grain size of the heat treated GTD222 was close to its as-built counterparts. Meanwhile, a large amount of γ’ and nano-scaled carbides were precipitated in the heat treated GTD222. The microstructure characteristics implied that the higher strength of the heat treated GTD222 can be attributed to the γ’ and nano-scaled carbides. This study provides essential microstructure and mechanical properties information for optimizing the heat treatment process of the AM processed GTD222.https://www.mdpi.com/1996-1944/14/13/3668selective laser meltingheat treatmentnickel matrix superalloycarbidemechanical properties |
| spellingShingle | Tian Xia Rui Wang Zhongnan Bi Guoliang Zhu Qingbiao Tan Rui Wang Ji Zhang Effect of Heat Treatment on Microstructure and Mechanical Properties of a Selective Laser Melting Processed Ni-Based Superalloy GTD222 Materials selective laser melting heat treatment nickel matrix superalloy carbide mechanical properties |
| title | Effect of Heat Treatment on Microstructure and Mechanical Properties of a Selective Laser Melting Processed Ni-Based Superalloy GTD222 |
| title_full | Effect of Heat Treatment on Microstructure and Mechanical Properties of a Selective Laser Melting Processed Ni-Based Superalloy GTD222 |
| title_fullStr | Effect of Heat Treatment on Microstructure and Mechanical Properties of a Selective Laser Melting Processed Ni-Based Superalloy GTD222 |
| title_full_unstemmed | Effect of Heat Treatment on Microstructure and Mechanical Properties of a Selective Laser Melting Processed Ni-Based Superalloy GTD222 |
| title_short | Effect of Heat Treatment on Microstructure and Mechanical Properties of a Selective Laser Melting Processed Ni-Based Superalloy GTD222 |
| title_sort | effect of heat treatment on microstructure and mechanical properties of a selective laser melting processed ni based superalloy gtd222 |
| topic | selective laser melting heat treatment nickel matrix superalloy carbide mechanical properties |
| url | https://www.mdpi.com/1996-1944/14/13/3668 |
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