Quantifying the Influences of Carbides and Porosities on the Fatigue Crack Evolution of a Ni-Based Single-Crystal Superalloy using X-ray Tomography

doi:10.1007/s40195-021-01273-7

IMR OpenIR

	Quantifying the Influences of Carbides and Porosities on the Fatigue Crack Evolution of a Ni-Based Single-Crystal Superalloy using X-ray Tomography
	Liu, Keli 1; Wang, Junsheng 1,2; Wang, Bing 1; Mao, Pengcheng 3; Yang, Yanhong 4; Zhou, Yizhou 4
通讯作者	Wang, Junsheng(junsheng.wang@bit.edu.cn)
	2021-07-16
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
页码	13
摘要	The detrimental effects of carbides and porosity on the fatigue crack initiation and propagation of nickel-based single-crystal superalloys have been reported by many previous studies. However, few studies have quantitatively compared the fatigue damaging effects of carbides and pores on the fatigue crack evolution. In this study, a high-resolution X-ray computed tomography (XCT) characterization of a DD5 nickel-based single-crystal superalloy during fatigue test was performed. The evolution of carbides, pores and cracks at all stages was observed and tracked. In order to quantify the 3D microstructures, a new damage factor that correlates the morphology of fracture surface with crack evolution behaviors was proposed. It was found that porosity was more detrimental than carbides in crack initiation and propagation during fatigue tests. Furthermore, pore spacing has been found to be the most significant factor among all controlling pore characteristics in the crack initiation stage and sphericity is the most critical pore characteristic in the crack propagation stage. Therefore, by statistically analyzing the evolution of carbides and pores during fatigue tests in this study, the underlying fatigue cracking mechanism of nickel-based superalloys is revealed.
关键词	X-ray tomography Ni-based superalloys Fatigue Porosity Carbide Crack initiation Crack propagation
资助者	Ministry of Industry and Information Technology through the National Science and Technology Major Project of China
DOI	10.1007/s40195-021-01273-7
收录类别	SCI
语种	英语
资助项目	Ministry of Industry and Information Technology through the National Science and Technology Major Project of China[2017-VI-0003-0073]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000673256600002
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
引用统计	被引频次：10[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/321006/160192
专题	中国科学院金属研究所
通讯作者	Wang, Junsheng
作者单位	1.Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China 2.Beijing Inst Technol, Adv Res Inst Multidisciplinary Sci, Beijing 100081, Peoples R China 3.Beijing Inst Technol, Ctr Micro & Nano Technol, Beijing 100081, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Superalloys Div, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Liu, Keli,Wang, Junsheng,Wang, Bing,et al. Quantifying the Influences of Carbides and Porosities on the Fatigue Crack Evolution of a Ni-Based Single-Crystal Superalloy using X-ray Tomography[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2021:13.
APA	Liu, Keli,Wang, Junsheng,Wang, Bing,Mao, Pengcheng,Yang, Yanhong,&Zhou, Yizhou.(2021).Quantifying the Influences of Carbides and Porosities on the Fatigue Crack Evolution of a Ni-Based Single-Crystal Superalloy using X-ray Tomography.ACTA METALLURGICA SINICA-ENGLISH LETTERS,13.
MLA	Liu, Keli,et al."Quantifying the Influences of Carbides and Porosities on the Fatigue Crack Evolution of a Ni-Based Single-Crystal Superalloy using X-ray Tomography".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2021):13.