Comprehensive damage and deformation mechanisms during out-of-phase thermal mechanical fatigue of the fourth-generation single crystal superalloy

doi:10.1016/j.ijfatigue.2023.107990

IMR OpenIR

	Comprehensive damage and deformation mechanisms during out-of-phase thermal mechanical fatigue of the fourth-generation single crystal superalloy
	Tan, Zihao 1,2; Wang, Xinguang 1; Li, Yongmei 1,2; Yang, Yanhong 1; Du, Yunling 3; Ge, Zhicheng 4; Liu, Jide 1; Liu, Jinlai 1; Li, Jinguo 1; Zhou, Yizhou 1; Sun, Xiaofeng 1
通讯作者	Wang, Xinguang(xgwang11b@imr.ac.cn) ; Yang, Yanhong(yhyang@imr.ac.cn)
	2024
发表期刊	INTERNATIONAL JOURNAL OF FATIGUE
ISSN	0142-1123
卷号	178 页码:14
摘要	To shed light on the stability and reliability of the fourth-generation single crystal (SX) superalloy during inservice operation, out-of-phase (OP)- thermal mechanical fatigue (TMF) experiments were systematically carried out. The TMF behavior, deformation and damage mechanisms were thoroughly investigated. The results showed that at comparatively low strain ranges (0.5% and 0.6%), the dislocation movements were basically concentrated in gamma matrix and the TMF life was basically governed by high-temperature oxidation. More locally, the fatigue cracks initiated from the spalling of surface oxides, while the discontinuous Al2O3 layer could only provide limited protective resistance to crack propagation. Additionally, deformation twins could nucleate in the vicinity of micropores or crack tips, which further induced more complex defects and accelerated the fatigue fracture of the alloy. Nevertheless, as the strain range reached 0.8% and 0.9%, the nucleation and extension of micro-twins were independent on the defects, the mechanisms of twinning-shearing and anti-phase boundary (APB)-shearing were observed throughout the specimen. Under these conditions, the fatigue cracks basically initiated from the severe plastic deformation, which resulted in the much-reduced TMF life of the specimen. Ultimately, salutary guidance for the further application of fourth-generation SX superalloys was rationally summarized.
关键词	Fourth-generation single crystal superalloy Thermomechanical fatigue Oxidation behavior Deformation twin Damage mechanism
资助者	National Key R & D Program of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences, National Science and Tech- nology Major Project ; Middle-aged and Youth Talents in Scientific and Technological Innovation Project of Shenyang ; Excellent Youth Foundation of Liaoning Province
DOI	10.1016/j.ijfatigue.2023.107990
收录类别	SCI
语种	英语
资助项目	National Key R & D Program of China[2017YFA0700704] ; Youth Innovation Promotion Association, Chinese Academy of Sciences, National Science and Tech- nology Major Project[2017 -VI -0002-0072] ; Middle-aged and Youth Talents in Scientific and Technological Innovation Project of Shenyang[RC220440] ; Excellent Youth Foundation of Liaoning Province[2021-YQ-02]
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Mechanical ; Materials Science, Multidisciplinary
WOS记录号	WOS:001091655700001
出版者	ELSEVIER SCI LTD
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/177998
专题	中国科学院金属研究所
通讯作者	Wang, Xinguang; Yang, Yanhong
作者单位	1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Liaoning Petrochem Univ, Sch Mech Engn, Fushun 113001, Peoples R China 4.Inst Corros Sci & Technol, Guangzhou 510530, Peoples R China
推荐引用方式 GB/T 7714	Tan, Zihao,Wang, Xinguang,Li, Yongmei,et al. Comprehensive damage and deformation mechanisms during out-of-phase thermal mechanical fatigue of the fourth-generation single crystal superalloy[J]. INTERNATIONAL JOURNAL OF FATIGUE,2024,178:14.
APA	Tan, Zihao.,Wang, Xinguang.,Li, Yongmei.,Yang, Yanhong.,Du, Yunling.,...&Sun, Xiaofeng.(2024).Comprehensive damage and deformation mechanisms during out-of-phase thermal mechanical fatigue of the fourth-generation single crystal superalloy.INTERNATIONAL JOURNAL OF FATIGUE,178,14.
MLA	Tan, Zihao,et al."Comprehensive damage and deformation mechanisms during out-of-phase thermal mechanical fatigue of the fourth-generation single crystal superalloy".INTERNATIONAL JOURNAL OF FATIGUE 178(2024):14.