Thermomechanical fatigue damage mechanism and life assessment of a single crystal Ni-based superalloy

doi:10.1016/j.jallcom.2021.159578

CORC > 力学研究所 > 中国科学院力学研究所 > 宽域飞行工程科学与应用中心

	Thermomechanical fatigue damage mechanism and life assessment of a single crystal Ni-based superalloy
	Yang, Junjie 5; Jing, Fulei 4; Yang ZM(杨正茂)3; Jiang, Kanghe 2; Hu, Dianyin 1; Zhang, Bin 1
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2021-08-15
卷号	872 页码:12
关键词	Thermomechanical fatigue (TMF) Single crystal superalloy Ratcheting effect Critical plane approach Life prediction
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2021.159578
通讯作者	Jing, Fulei(jingfulei@163.com) ; Yang, Zhengmao(zmyang@imech.ac.cn)
英文摘要	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.
分类号	一类
资助项目	Strategic Priority Research Program of Chinese Academy of Sciences[XDA17030100] ; National Natural Science Foundation of China[51375031]
WOS关键词	LOW-CYCLE FATIGUE ; BEHAVIOR ; ORIENTATIONS ; DEFORMATION ; PREDICTION ; STRAIN ; MODEL
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
WOS记录号	WOS:000647671300004
资助机构	Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China
其他责任者	Jing, Fulei ; Yang, Zhengmao
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/86584]
专题	宽域飞行工程科学与应用中心
作者单位	1.Beihang Univ, Sch Energy & Power Engn, Beijing, Peoples R China 2.Aero Engine Grp Corp China, Hunan Aviat Powerplant Res Inst, Zhuzhou, Peoples R China; 3.Chinese Acad Sci, Inst Mech, Beijing, Peoples R China; 4.Aero Engine Grp Corp China, Aero Engine Acad China, Beijing, Peoples R China; 5.Tsinghua Univ, Inst Aero Engine, Beijing, Peoples R China;
推荐引用方式 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.
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.