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| Thermomechanical fatigue damage mechanism and life assessment of a single crystal Ni-based superalloy | |
Yang, Junjie1; Jing, Fulei2; Yang ZM(杨正茂)3 ; Jiang, Kanghe4; Hu, Dianyin5; Zhang, Bin5
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| Corresponding Author | Jing, Fulei([email protected]) ; Yang, Zhengmao([email protected]) |
| Source Publication | JOURNAL OF ALLOYS AND COMPOUNDS
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| 2021-08-15 | |
| Volume | 872Pages:12 |
| ISSN | 0925-8388 |
| Abstract | The thermomechanical fatigue (TMF) of single-crystal air-cooled turbine blades is critical for accurately evaluating the lifetimes of advanced aero-engines. The present work focuses on the mechanical behavior and damage mechanism of a single-crystal Ni-based superalloy (DD6) under stress-controlled TMF loading, and in-phase (IP) and out-of-phase (OP) mode of TMF were conducted and compared with low cycle fatigue (LCF) loading. A ratcheting effect is observed during the deformation of DD6 under TMF loading, and the direction and size of the ratcheting strain are considerably influenced by the phase angle and mechanical load. The ratcheting strain increases with mechanical load and dwell time at high temperature, consequently shortening the lifetime of the material. The key factors affecting the TMF damage of DD6 are identified through a SEM analysis, which shows that the damage under IP TMF loading mainly comes from creep and fatigue, whereas that under OP TMF loading is dominated by oxidation and fatigue. Based on the critical plane approach, a fatigue life prediction model is proposed considering the ratcheting effect to predict the fatigue life of DD6 under TMF loading. The good agreement between the proposed model and experimental data indicates that the model has the potential to predict the fatigue life of DD6 under TMF loading. (c) 2021 Elsevier B.V. All rights reserved. |
| Keyword | Thermomechanical fatigue (TMF) Single crystal superalloy Ratcheting effect Critical plane approach Life prediction |
| DOI | 10.1016/j.jallcom.2021.159578 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000647671300004 |
| WOS Keyword | LOW-CYCLE FATIGUE ; BEHAVIOR ; ORIENTATIONS ; DEFORMATION ; PREDICTION ; STRAIN ; MODEL |
| WOS Research Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| Funding Project | Strategic Priority Research Program of Chinese Academy of Sciences[XDA17030100] ; National Natural Science Foundation of China[51375031] |
| Funding Organization | Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China |
| Classification | 一类 |
| Ranking | 1 |
| Contributor | Jing, Fulei ; Yang, Zhengmao |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/86585 |
| Collection | 宽域飞行工程科学与应用中心 |
| Affiliation | 1.Tsinghua Univ, Inst Aero Engine, Beijing, Peoples R China; 2.Aero Engine Grp Corp China, Aero Engine Acad China, Beijing, Peoples R China; 3.Chinese Acad Sci, Inst Mech, Beijing, Peoples R China; 4.Aero Engine Grp Corp China, Hunan Aviat Powerplant Res Inst, Zhuzhou, Peoples R China; 5.Beihang Univ, Sch Energy & Power Engn, Beijing, Peoples R China |
| Recommended Citation GB/T 7714 | Yang, Junjie,Jing, Fulei,Yang ZM,et al. Thermomechanical fatigue damage mechanism and life assessment of a single crystal Ni-based superalloy[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2021,872:12.Rp_Au:Jing, Fulei, Yang, Zhengmao |
| APA | Yang, Junjie,Jing, Fulei,杨正茂,Jiang, Kanghe,Hu, Dianyin,&Zhang, Bin.(2021).Thermomechanical fatigue damage mechanism and life assessment of a single crystal Ni-based superalloy.JOURNAL OF ALLOYS AND COMPOUNDS,872,12. |
| MLA | Yang, Junjie,et al."Thermomechanical fatigue damage mechanism and life assessment of a single crystal Ni-based superalloy".JOURNAL OF ALLOYS AND COMPOUNDS 872(2021):12. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Jp2021199.pdf（7949KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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