Quantifying the impact of oxidized carbide expansion on fatigue crack initiation in a Ni-based single-crystal superalloy

doi:10.1016/j.matchar.2024.114701

IMR OpenIR

	Quantifying the impact of oxidized carbide expansion on fatigue crack initiation in a Ni-based single-crystal superalloy
	Zhou, Zaifeng 1; Wang, Dekun 1; Li, Runguang 1,2; Wang, Youkang 3,4; Jin, Xueyi 5; Wang, Tianze 1; Li, Tiancheng 1; Li, Shilei 1; Xie, Guang 6; Zhang, Jian 6; Wang, Yan-Dong 1,7
通讯作者	Li, Shilei(lishilei@ustb.edu.cn) ; Wang, Yan-Dong(ydwang@ustb.edu.cn)
	2025-02-01
发表期刊	MATERIALS CHARACTERIZATION
ISSN	1044-5803
卷号	220 页码:7
摘要	Carbide oxidation is commonly observed near fracture surfaces of superalloys under atmospheric fatigue conditions. Here, we investigated how MC carbide oxidation affects crack initiation in single-crystal superalloys during intermediate-temperature low-cycle fatigue. The findings reveal that an oxide layer composed of nanocrystalline anatase-TiO2 and B-Ta2O5 formed within the carbides, triggering local lattice rotations in the surrounding matrix that exceeded 15 degrees and GND densities above 4 x 1015 /m2, likely due to multislip. Firstprinciples calculations and finite element analysis revealed that (i) the formation of the oxide layer can cause approximately 28.5 % expansion of the carbide lattice, and (ii) the resulting thermal stress along with oxidation primarily concentrates near the oxide and carbide interface. A physical model is proposed to explain how carbide oxidation facilitates fatigue crack initiation in single-crystal superalloys under cyclic loading.
关键词	Ni-based single-crystal superalloy Carbide Oxidation Low-cycle fatigue Crack
资助者	National Key Research and Development Program of China ; National Natural Science Foundation of China (NSFC) ; Guangdong-Hong Kong-Macao Joint Laboratory for Neutron Scattering Science and Technology ; National Key Laboratory of Neutron Science and Technology ; Fundamental Research Funds for the Central Universities
DOI	10.1016/j.matchar.2024.114701
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2021YFA1600600] ; National Natural Science Foundation of China (NSFC)[U2141206] ; National Natural Science Foundation of China (NSFC)[51921001] ; Guangdong-Hong Kong-Macao Joint Laboratory for Neutron Scattering Science and Technology ; National Key Laboratory of Neutron Science and Technology[NST20240103] ; Fundamental Research Funds for the Central Universities[FRF-TP-20-03C2]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS记录号	WOS:001411351000001
出版者	ELSEVIER SCIENCE INC
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/180595
专题	中国科学院金属研究所
通讯作者	Li, Shilei; Wang, Yan-Dong
作者单位	1.Univ Sci & Technol Beijing, Beijing Adv Innovat Ctr Mat Genome Engn, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China 2.Deakin Univ, Inst Frontier Mat, Geelong, Vic 3216, Australia 3.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 4.Spallat Neutron Source Sci Ctr, Dongguan 523803, Peoples R China 5.Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China 6.Chinese Acad Sci, Inst Met Res, Superalloys Div, Shenyang 110016, Peoples R China 7.Liaoning Acad Mat, Inst Mat Intelligent Technol, Shenyang 110004, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Zaifeng,Wang, Dekun,Li, Runguang,et al. Quantifying the impact of oxidized carbide expansion on fatigue crack initiation in a Ni-based single-crystal superalloy[J]. MATERIALS CHARACTERIZATION,2025,220:7.
APA	Zhou, Zaifeng.,Wang, Dekun.,Li, Runguang.,Wang, Youkang.,Jin, Xueyi.,...&Wang, Yan-Dong.(2025).Quantifying the impact of oxidized carbide expansion on fatigue crack initiation in a Ni-based single-crystal superalloy.MATERIALS CHARACTERIZATION,220,7.
MLA	Zhou, Zaifeng,et al."Quantifying the impact of oxidized carbide expansion on fatigue crack initiation in a Ni-based single-crystal superalloy".MATERIALS CHARACTERIZATION 220(2025):7.