| Stress rupture anisotropy of a Ru-containing fourth-generation single crystal superalloy at 760 degrees C and 1100 degrees C | |
| Li, Y. M.1,2; Tan, Z. H.1,2; Wang, X. G.2; Mu, Y.2; Zhao, H. C.3; Tan, H. B.3; Liu, J. L.2; Wang, B.3; Li, J. G.2; Zhou, Y. Z.2; Sun, X. F.2 | |
| Corresponding Author | Wang, X. G.(xgwang11b@imr.ac.cn) ; Sun, X. F.(xfsun@imr.ac.cn) |
| 2022-10-20 | |
| Source Publication | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| ISSN | 0921-5093 |
| Volume | 856Pages:11 |
| Abstract | The stress rupture anisotropy of a Ru-containing fourth generation single crystal superalloy was studied at two distinct conditions of 760 degrees C/810 MPa and 1100 degrees C/165 MPa. The ruptured microstructure and deformation mechanisms of [011]- and [111]-oriented specimens are systematically investigated, and the determinants of anisotropic performance, including crystal orientation and work-hardening effect, are comprehensively examined. The results indicate that this experimental alloy exhibits strong anisotropy at the intermediate temperature and high stress because of the high dependence of deformation on Schmid factors. The low critical shearing stress for <112>{111} slip systems and limited stacking faults interaction propel the formation of continuous stacking faults in [011]-oriented specimens, thereby resulting in its worse stress rupture life at 760 degrees C/810 MPa. While the high critical stress for <112>{111} slip systems and abundant stacking faults interaction in gamma channels, which consequently contributes to the absence of superlattice stacking faults in gamma' phase, could be used to explain the superior stress rupture life of the [111]-oriented specimens at 760 degrees C/810 MPa. At high temperature and low stress, the anisotropy disparity of the experimental alloy is decreased as the deformation mechanism transforms into <110>{111} slipping and climbing. Moreover, the effects of Ru on anisotropic properties are identified by comparing it with other Ru-free SX superalloys. That is, the addition of Ru could lower stacking faults energy and encourage the formation of stacking faults in gamma channels, which would reduce the stress rupture anisotropy, especially at intermediate temperature and high stress. |
| Keyword | Ni-based superalloys Ru Stress rupture Anisotropy Stacking faults |
| Funding Organization | National Science and Technology Major Project ; National Key R & D Program of China ; Program of CAS Interdisciplinary Innovation Team and Youth Innovation Promotion Association, CAS |
| DOI | 10.1016/j.msea.2022.144006 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Science and Technology Major Project[2017 -VI -0002-0072] ; National Key R & D Program of China[2017YFA0700704] ; Program of CAS Interdisciplinary Innovation Team and Youth Innovation Promotion Association, CAS |
| WOS Research Area | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000862977400001 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/175617 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Wang, X. G.; Sun, X. F. |
| Affiliation | 1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 3.Aero Engine Corp China, Inst Sichuan Gas Turbine Res, Chengdu 610500, Peoples R China |
| Recommended Citation GB/T 7714 | Li, Y. M.,Tan, Z. H.,Wang, X. G.,et al. Stress rupture anisotropy of a Ru-containing fourth-generation single crystal superalloy at 760 degrees C and 1100 degrees C[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2022,856:11. |
| APA | Li, Y. M..,Tan, Z. H..,Wang, X. G..,Mu, Y..,Zhao, H. C..,...&Sun, X. F..(2022).Stress rupture anisotropy of a Ru-containing fourth-generation single crystal superalloy at 760 degrees C and 1100 degrees C.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,856,11. |
| MLA | Li, Y. M.,et al."Stress rupture anisotropy of a Ru-containing fourth-generation single crystal superalloy at 760 degrees C and 1100 degrees C".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 856(2022):11. |
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