Quantifying the impact of oxidized carbide expansion on fatigue crack initiation in a Ni-based single-crystal superalloy
文献类型：期刊论文
| 作者 | Zhou, Zaifeng1; Wang, Dekun1; Li, Runguang1,2; Wang, Youkang3,4; Jin, Xueyi5; Wang, Tianze1; Li, Tiancheng1; Li, Shilei1; Xie, Guang6; Zhang, Jian6 |
| 刊名 | MATERIALS CHARACTERIZATION
 |
| 出版日期 | 2025-02-01 |
| 卷号 | 220页码:7 |
| 关键词 | Ni-based single-crystal superalloy Carbide Oxidation Low-cycle fatigue Crack |
| ISSN号 | 1044-5803 |
| DOI | 10.1016/j.matchar.2024.114701 |
| 通讯作者 | Li, Shilei(lishilei@ustb.edu.cn) ; Wang, Yan-Dong(ydwang@ustb.edu.cn) |
| 英文摘要 | 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. |
| 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 |
| 语种 | 英语 |
| WOS记录号 | WOS:001411351000001 |
| 出版者 | ELSEVIER SCIENCE INC |
| 资助机构 | 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 |
| 源URL |  |
| 专题 | 金属研究所_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. |
入库方式： OAI收割
来源：金属研究所
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