In-Phase Thermal-Mechanical Fatigue Behavior and Damage Mechanism of a Fourth-Generation Ni-Based Single-Crystal Superalloy
文献类型：期刊论文
| 作者 | Tan Zihao1; Li Yongmei1,2; Wang Xinguang1; Zhao Haochuan; Tan Haibing3; Wang Biao3; Li Jinguo1; Zhou Yizhou1; Sun Xiaofeng1 |
| 刊名 | ACTA METALLURGICA SINICA
 |
| 出版日期 | 2024-02-11 |
| 卷号 | 60期号:2页码:154-166 |
| 关键词 | fourth-generation single-crystal superalloy thermal-mechanical fatigue fracture characteristic oxidation behavior damage mechanism |
| ISSN号 | 0412-1961 |
| DOI | 10.11900/0412.1961.2022.00309 |
| 通讯作者 | Wang Xinguang(xgwang11b@imr.ac.cn) ; Sun Xiaofeng(xfsun@imr.ac.cn) |
| 英文摘要 | During the service, the turbine blades of aero-engines are subjected to a complex and ever-changing combination of temperature and stress, resulting in severe cyclic temperature/strain damages and thermal-mechanical fatigue (TMF) failures of the alloy. In this work, in-phase (IP) TMF tests under 600-1000 degrees C were conducted on a newly developed fourth-generation single-crystal superalloy. The alloy.. s fracture characteristics and comprehensive damage mechanisms were examined via SEM, EBSD, and TEM. The results showed that when the strain range increased, the fatigue life of the experimental alloy noticeably decreased, and the hysteresis loop clearly opened. Stress response behaviors shifted from cyclic softening at high temperatures and cyclic hardening at low temperatures into a dominant characteristic of cyclic stabilizing. The fracture surfaces of alloys displayed ductile features after fatigue fracture under various circumstances, and the area fraction of dimples reduced with increasing strain amplitude. When the strain amplitude was low, the alloy was mainly subjected to oxidation damage, accompanied with a certain degree of creep damage. In contrast, the dominant deformation mechanism of the alloy was dislocation slipping in g matrix and Orowan by-passing through g' particles. As the strain amplitude increased to higher levels, the alloy was subjected to severe plastic deformation damage, while the degree of oxidation damage had been alleviated. Under this condition, the interfacial dislocations could shear into the g' phase with the generated stacking fault or anti-phase boundary. Notably, no recrystallization grains or deformation twins were formed in the DD91 alloy during the IP-TMF experiments at different mechanical strain amplitudes. |
| 资助项目 | National Science and Technology Major Project[2017-VI-0002-0072] ; National Key Research and Development Program of China[2017YFA0700704] ; Program of CAS Interdisciplinary Innovation Team ; Youth Innovation Promotion Association |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001153599200003 |
| 出版者 | SCIENCE PRESS |
| 资助机构 | National Science and Technology Major Project ; National Key Research and Development Program of China ; Program of CAS Interdisciplinary Innovation Team ; Youth Innovation Promotion Association |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Wang Xinguang; Sun Xiaofeng |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Aero Engine Corp China, Inst Sichuan Gas Turbine Res, Chengdu 610500, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tan Zihao,Li Yongmei,Wang Xinguang,et al. In-Phase Thermal-Mechanical Fatigue Behavior and Damage Mechanism of a Fourth-Generation Ni-Based Single-Crystal Superalloy[J]. ACTA METALLURGICA SINICA,2024,60(2):154-166. |
| APA | Tan Zihao.,Li Yongmei.,Wang Xinguang.,Zhao Haochuan.,Tan Haibing.,...&Sun Xiaofeng.(2024).In-Phase Thermal-Mechanical Fatigue Behavior and Damage Mechanism of a Fourth-Generation Ni-Based Single-Crystal Superalloy.ACTA METALLURGICA SINICA,60(2),154-166. |
| MLA | Tan Zihao,et al."In-Phase Thermal-Mechanical Fatigue Behavior and Damage Mechanism of a Fourth-Generation Ni-Based Single-Crystal Superalloy".ACTA METALLURGICA SINICA 60.2(2024):154-166. |
入库方式： OAI收割
来源：金属研究所
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