| Microstructure and stress-rupture property of DD32 nickel-based single crystal superalloy fabricated by additive manufacturing | |
| Ci, Shiwei1,2; Liang, Jingjing1,3,4; Li, Jinguo1,4; Wang, Haiwei1,2; Zhou, Yizhou1; Sun, Xiaofeng1; Ding, Yutian5 | |
| Corresponding Author | Liang, Jingjing(jjliang@imr.ac.cn) ; Zhou, Yizhou(yzzhou@imr.ac.cn) |
| 2021-02-15 | |
| Source Publication | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| ISSN | 0925-8388 |
| Volume | 854Pages:12 |
| Abstract | Additive manufacturing (AM) technology is currently undergoing rapid development in the aerospace field. However, due to the intense cracking susceptibility, additive manufacturing of nickel-based single-crystal (SX) superalloys still presents major challenges. In this paper, the crack-free SX superalloy is fabricated directly using pulsed laser. The microstructure and stress rupture property of the additively manufactured SX superalloy after heat treatment are carefully investigated and compared with conventional cast alloy. The results show that the stress rupture life of the AM sample (66.4 h) is longer than that of the cast sample (59.1 h). This is related to the difference of microstructure between AM and cast samples. AM samples have a finer dendritic structure and lower inter-dendritic segregation, which is conducive to solution strengthening and avoids the formation of TCP phase. Besides, the carbides in the AM sample is finer and evenly distributed, which is conducive to precipitation strengthening; The fine carbides are enveloped within layers of y' in the AM samples, which avoids the formation of cracks caused by separation of carbides and the matrix. All of those are beneficial to improve stress rupture properties. (C) 2020 Elsevier B.V. All rights reserved. |
| Keyword | Additive manufacturing Nickel-based superalloy Single crystal Stress rupture property Micro structures |
| Funding Organization | National Key R&D Program of China ; National Natural Science Foundation of China, China (NSFC, China) ; National High Technology Research and Development Program, China (863) ; State Key Laboratory of Solidification Processing, China in NWPU |
| DOI | 10.1016/j.jallcom.2020.157180 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key R&D Program of China[2017YFA0700703] ; National Key R&D Program of China[2018YFB1100000] ; National Key R&D Program of China[2017YFB1103800] ; National Natural Science Foundation of China, China (NSFC, China)[51771190] ; National Natural Science Foundation of China, China (NSFC, China)[51671189] ; National Natural Science Foundation of China, China (NSFC, China)[U1508213] ; National High Technology Research and Development Program, China (863)[2014AA041701] ; State Key Laboratory of Solidification Processing, China in NWPU[SKLSP201834] |
| WOS Research Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000596248300007 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/158781 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Liang, Jingjing; Zhou, Yizhou |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 230026, Peoples R China 3.Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China 4.Space Mfg Technol, CAS Key Lab, Beijing 100094, Peoples R China 5.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Non Ferrous Me, 287 Langongping Rd, Lanzhou 730000, Peoples R China |
| Recommended Citation GB/T 7714 | Ci, Shiwei,Liang, Jingjing,Li, Jinguo,et al. Microstructure and stress-rupture property of DD32 nickel-based single crystal superalloy fabricated by additive manufacturing[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2021,854:12. |
| APA | Ci, Shiwei.,Liang, Jingjing.,Li, Jinguo.,Wang, Haiwei.,Zhou, Yizhou.,...&Ding, Yutian.(2021).Microstructure and stress-rupture property of DD32 nickel-based single crystal superalloy fabricated by additive manufacturing.JOURNAL OF ALLOYS AND COMPOUNDS,854,12. |
| MLA | Ci, Shiwei,et al."Microstructure and stress-rupture property of DD32 nickel-based single crystal superalloy fabricated by additive manufacturing".JOURNAL OF ALLOYS AND COMPOUNDS 854(2021):12. |
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