| Effect of pre-strain treatment on mechanical properties of a Ni-Co base disk superalloy | |
| Zhu, C. Z.1,2; Zhang, R.1; Cui, C. Y.1; Zhou, Y. Z.1; Qu, J. L.3; Gan, B.3; Zhang, B. J.3; Sun, X. F.1 | |
| Corresponding Author | Zhang, R.(rzhang@imr.ac.cn) ; Cui, C. Y.(chycui@imr.ac.cn) |
| 2022-06-05 | |
| Source Publication | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| ISSN | 0925-8388 |
| Volume | 905Pages:10 |
| Abstract | The effect of pre-strain treatment on mechanical properties of a Ni-Co base disk superalloy was studied. Results show that the pre-strain treatment, creep at 725 degrees C/630 MPa, improves the yield strength of the alloy at 23 degrees C and 760 degrees C. However, the creep life (at 760 degrees C/480 MPa) of the alloy was reduced by pre-strain treatment. The microstructure indicated that a lot of microtwins and Suzuki segregations were introduced by the pre-strain treatment, besides some unfavorable factors on mechanical properties, i.e., ripening of precipitates. The interactions of microtwin and Suzuki segregation with dislocations were discussed in this study, and it was deemed that the impediment of twin boundary and Suzuki segregation to the motion of dislocation may be responsible for the enhancement of the mechanical properties. Meanwhile, the microtwin and the Suzuki segregation have good stability at service temperature. If the problem of reducing the creep properties caused by pre-strain treatment would be solved, the introduction of microtwin and Suzuki segregation appropriately can be considered as a novel strengthening method in designing advanced superalloys.(c) 2022 Elsevier B.V. All rights reserved. |
| Keyword | Ni-Co base superalloy Pre-strain Microstructure Mechanical property Microtwinning Suzuki segregation |
| Funding Organization | National Key Research and Development Program of China ; National Science and Technology Major Project of China ; IMR Innovation Fund ; National Natural Science Foundation of China ; Doctoral Start-up Foundation of Liaoning Province |
| DOI | 10.1016/j.jallcom.2022.164167 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key Research and Development Program of China[2017YFA0700703] ; National Key Research and Development Program of China[2019YFA0705300] ; National Science and Technology Major Project of China[2019-VI-0006-0120] ; IMR Innovation Fund[2021-PY09] ; National Natural Science Foundation of China[92060102] ; Doctoral Start-up Foundation of Liaoning Province[2020-BS-0 07] |
| WOS Research Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000779681500003 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/172873 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhang, R.; Cui, C. Y. |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, 96 Jinzhai Rd, Hefei 230026, Peoples R China 3.Cent Iron & Steel Res Inst, Beijing Key Lab Adv High Temp Mat, Beijing 100081, Peoples R China |
| Recommended Citation GB/T 7714 | Zhu, C. Z.,Zhang, R.,Cui, C. Y.,et al. Effect of pre-strain treatment on mechanical properties of a Ni-Co base disk superalloy[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2022,905:10. |
| APA | Zhu, C. Z..,Zhang, R..,Cui, C. Y..,Zhou, Y. Z..,Qu, J. L..,...&Sun, X. F..(2022).Effect of pre-strain treatment on mechanical properties of a Ni-Co base disk superalloy.JOURNAL OF ALLOYS AND COMPOUNDS,905,10. |
| MLA | Zhu, C. Z.,et al."Effect of pre-strain treatment on mechanical properties of a Ni-Co base disk superalloy".JOURNAL OF ALLOYS AND COMPOUNDS 905(2022):10. |
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