Effect of Ru on Deformation Mechanism and Microstructure Evolution of Single-Crystal Superalloys under Medium-Temperature and High-Stress Creep
In this work, the effect of the Ru element on the γ′-phase evolution and deformation mechanism in the fourth-generation Ni-based single-crystal superalloy was investigated. Results show that the Ru element alters the distribution coefficient of other elements in the alloy to produce reverse partitio...
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MDPI AG
2023-03-01
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| Online Access: | https://www.mdpi.com/1996-1944/16/7/2732 |
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| author | Stephen Okhiai Emokpaire Nan Wang Jide Liu Chongwei Zhu Xinguang Wang Jinguo Li Yizhou Zhou |
| author_facet | Stephen Okhiai Emokpaire Nan Wang Jide Liu Chongwei Zhu Xinguang Wang Jinguo Li Yizhou Zhou |
| author_sort | Stephen Okhiai Emokpaire |
| collection | DOAJ |
| description | In this work, the effect of the Ru element on the γ′-phase evolution and deformation mechanism in the fourth-generation Ni-based single-crystal superalloy was investigated. Results show that the Ru element alters the distribution coefficient of other elements in the alloy to produce reverse partitioning behavior, which leads to a difference in microstructure between 0Ru and 3Ru. The addition of Ru triggered the incubation period before the beginning of the primary creep stage, which depends on the creep temperature and stress during creep deformation. TEM results revealed that Ru addition inhibits the slip system {111}<112> at medium-temperature (760–1050 °C) and high-stress (270–810 MPa) creep, which brings a considerably low creep rate and high creep life to the Ru-containing alloy. |
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| id | doaj.art-0d4395d692194ee388ad5b0790f29ca1 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T05:31:22Z |
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| spelling | doaj.art-0d4395d692194ee388ad5b0790f29ca12023-11-17T17:04:18ZengMDPI AGMaterials1996-19442023-03-01167273210.3390/ma16072732Effect of Ru on Deformation Mechanism and Microstructure Evolution of Single-Crystal Superalloys under Medium-Temperature and High-Stress CreepStephen Okhiai Emokpaire0Nan Wang1Jide Liu2Chongwei Zhu3Xinguang Wang4Jinguo Li5Yizhou Zhou6Shi-Changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, ChinaShi-Changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, ChinaShi-Changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, ChinaShi-Changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, ChinaShi-Changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, ChinaShi-Changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, ChinaShi-Changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, ChinaIn this work, the effect of the Ru element on the γ′-phase evolution and deformation mechanism in the fourth-generation Ni-based single-crystal superalloy was investigated. Results show that the Ru element alters the distribution coefficient of other elements in the alloy to produce reverse partitioning behavior, which leads to a difference in microstructure between 0Ru and 3Ru. The addition of Ru triggered the incubation period before the beginning of the primary creep stage, which depends on the creep temperature and stress during creep deformation. TEM results revealed that Ru addition inhibits the slip system {111}<112> at medium-temperature (760–1050 °C) and high-stress (270–810 MPa) creep, which brings a considerably low creep rate and high creep life to the Ru-containing alloy.https://www.mdpi.com/1996-1944/16/7/2732creep deformationdeformation mechanismγ′ phasesingle-crystal superalloys |
| spellingShingle | Stephen Okhiai Emokpaire Nan Wang Jide Liu Chongwei Zhu Xinguang Wang Jinguo Li Yizhou Zhou Effect of Ru on Deformation Mechanism and Microstructure Evolution of Single-Crystal Superalloys under Medium-Temperature and High-Stress Creep Materials creep deformation deformation mechanism γ′ phase single-crystal superalloys |
| title | Effect of Ru on Deformation Mechanism and Microstructure Evolution of Single-Crystal Superalloys under Medium-Temperature and High-Stress Creep |
| title_full | Effect of Ru on Deformation Mechanism and Microstructure Evolution of Single-Crystal Superalloys under Medium-Temperature and High-Stress Creep |
| title_fullStr | Effect of Ru on Deformation Mechanism and Microstructure Evolution of Single-Crystal Superalloys under Medium-Temperature and High-Stress Creep |
| title_full_unstemmed | Effect of Ru on Deformation Mechanism and Microstructure Evolution of Single-Crystal Superalloys under Medium-Temperature and High-Stress Creep |
| title_short | Effect of Ru on Deformation Mechanism and Microstructure Evolution of Single-Crystal Superalloys under Medium-Temperature and High-Stress Creep |
| title_sort | effect of ru on deformation mechanism and microstructure evolution of single crystal superalloys under medium temperature and high stress creep |
| topic | creep deformation deformation mechanism γ′ phase single-crystal superalloys |
| url | https://www.mdpi.com/1996-1944/16/7/2732 |
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