Microstructure evolution and tensile property of a first-generation single crystal superalloy fabricated by laser melting deposition
Additive manufacturing (AM) of single crystal superalloys has got some progress in recent researches, but there are few reports on eliminating recrystallization or mechanical properties of single crystal superalloys by AM. In this work, single-crystal samples of SRR99 were fabricated at high tempera...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2020-01-01
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| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/aba398 |
| _version_ | 1797746297442140160 |
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| author | Guowei Wang Xianfeng Shen Jialin Yang Jingjing Liang Yizhou Zhou Xiaofeng Sun |
| author_facet | Guowei Wang Xianfeng Shen Jialin Yang Jingjing Liang Yizhou Zhou Xiaofeng Sun |
| author_sort | Guowei Wang |
| collection | DOAJ |
| description | Additive manufacturing (AM) of single crystal superalloys has got some progress in recent researches, but there are few reports on eliminating recrystallization or mechanical properties of single crystal superalloys by AM. In this work, single-crystal samples of SRR99 were fabricated at high temperature by laser melting deposition (LMD). Owing to the high temperature of substrate in the deposition process, recrystallization in the following heat treatment process was eliminated. The contrast sample of SRR99 was prepared by directional solidification, and the microstructure evolution during heat treatment and tensile property of deposited samples were analyzed. The results showed that the shapes of the γ ′ phase became irregular after solution treatment in deposited samples. After a solid solution and aging treatment, the γ ′ phase size is larger and the γ ′ volume fraction is slightly lower in deposited samples than in the contrast sample. As a result, the yield and tensile strength of deposited samples are slightly lower than that of contrast samples, but the plasticity of deposited samples is better. |
| first_indexed | 2024-03-12T15:34:48Z |
| format | Article |
| id | doaj.art-d394d65bd6914ccda528f161e9769ad7 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:34:48Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-d394d65bd6914ccda528f161e9769ad72023-08-09T16:17:49ZengIOP PublishingMaterials Research Express2053-15912020-01-017707651110.1088/2053-1591/aba398Microstructure evolution and tensile property of a first-generation single crystal superalloy fabricated by laser melting depositionGuowei Wang0https://orcid.org/0000-0002-7841-6490Xianfeng Shen1Jialin Yang2Jingjing Liang3Yizhou Zhou4Xiaofeng Sun5Institute of Machinery Manufacturing Technology, China Academy of Engineering Physics, Mianyang 621900, People’s Republic of China; Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of ChinaInstitute of Machinery Manufacturing Technology, China Academy of Engineering Physics, Mianyang 621900, People’s Republic of ChinaInstitute of Machinery Manufacturing Technology, China Academy of Engineering Physics, Mianyang 621900, People’s Republic of ChinaInstitute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of ChinaInstitute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of ChinaInstitute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of ChinaAdditive manufacturing (AM) of single crystal superalloys has got some progress in recent researches, but there are few reports on eliminating recrystallization or mechanical properties of single crystal superalloys by AM. In this work, single-crystal samples of SRR99 were fabricated at high temperature by laser melting deposition (LMD). Owing to the high temperature of substrate in the deposition process, recrystallization in the following heat treatment process was eliminated. The contrast sample of SRR99 was prepared by directional solidification, and the microstructure evolution during heat treatment and tensile property of deposited samples were analyzed. The results showed that the shapes of the γ ′ phase became irregular after solution treatment in deposited samples. After a solid solution and aging treatment, the γ ′ phase size is larger and the γ ′ volume fraction is slightly lower in deposited samples than in the contrast sample. As a result, the yield and tensile strength of deposited samples are slightly lower than that of contrast samples, but the plasticity of deposited samples is better.https://doi.org/10.1088/2053-1591/aba398SRR99single crystal superalloylaser deposition |
| spellingShingle | Guowei Wang Xianfeng Shen Jialin Yang Jingjing Liang Yizhou Zhou Xiaofeng Sun Microstructure evolution and tensile property of a first-generation single crystal superalloy fabricated by laser melting deposition Materials Research Express SRR99 single crystal superalloy laser deposition |
| title | Microstructure evolution and tensile property of a first-generation single crystal superalloy fabricated by laser melting deposition |
| title_full | Microstructure evolution and tensile property of a first-generation single crystal superalloy fabricated by laser melting deposition |
| title_fullStr | Microstructure evolution and tensile property of a first-generation single crystal superalloy fabricated by laser melting deposition |
| title_full_unstemmed | Microstructure evolution and tensile property of a first-generation single crystal superalloy fabricated by laser melting deposition |
| title_short | Microstructure evolution and tensile property of a first-generation single crystal superalloy fabricated by laser melting deposition |
| title_sort | microstructure evolution and tensile property of a first generation single crystal superalloy fabricated by laser melting deposition |
| topic | SRR99 single crystal superalloy laser deposition |
| url | https://doi.org/10.1088/2053-1591/aba398 |
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