Microstructural evolution and its influence on the wear resistance of a laser directed energy deposited Ni-based single crystal superalloy
文献类型：期刊论文
| 作者 | Ren, Chenyu1; Chen, Kai1; Liang, Jingjing2; Narayan, R. Lakshmi3; Ramamurty, Upadrasta4; Li, Jinguo2 |
| 刊名 | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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| 出版日期 | 2025-01-10 |
| 卷号 | 205页码:127-138 |
| 关键词 | In-situ formed gradient nanostructure Enhanced wear resistance Laser-directed energy deposition additive manufacturing Ni-based single crystal superalloys Plastic deformation |
| ISSN号 | 1005-0302 |
| DOI | 10.1016/j.jmst.2024.03.048 |
| 通讯作者 | Chen, Kai(kchenlbl@gmail.com) ; Liang, Jingjing(jjliang@imr.ac.cn) ; Li, Jinguo(jgli@imr.ac.cn) |
| 英文摘要 | The wear behavior of Ni-based single crystal (NBSC) superalloy SRR99 fabricated by laser-directed energy deposition (LDED) is investigated and compared with that of its cast counterpart. While gamma' precipitate size in the latter is > 400 nm, that in the former is an order of magnitude lower. Dry sliding wear tests reveal that the wear rate and coefficient of friction of the LDED alloy are 75 % and 20 % lower than that of its cast counterpart, respectively. Detailed transmission electron microscopy investigation of the wear-tested cast alloy indicates that there is orientation change and formation of nanoscale grains only at the top layer of the worn surface, whereas regions below undergo moderate plastic deformation via dislocation slip. In contrast, the sub-surface of the worn LDED alloy has a graded microstructure, with a composite of NiO/gamma-Ni on the top, gamma' free nano-grains in the middle, and a highly deformed nanoscale layer at the bottom. The improved wear behavior of the LDED alloy is attributed to its higher dislocation density, finer gamma' precipitates, and the formation of this graded microstructure. Finally, a detailed description of mechanisms that lead to the formation of this unique graded microstructure is provided. (c) 2025 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
| 资助项目 | National Key R&D Program of China[2023YFB3712002] ; National Key R&D Program of China[2021YFB3702503] ; National Natural Science Foundation of China[51927801] ; National Natural Science Foundation of China[U2032205] ; National Science and Technology Major Project[Y2019-VII-0011-0151] ; National Science and Technology Major Project[2019-VII-0019-0161] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001363140700001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China ; National Science and Technology Major Project |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Chen, Kai; Liang, Jingjing; Li, Jinguo |
| 作者单位 | 1.Xi An Jiao Tong Univ, Ctr Adv Mat Performance Nanoscale CAMP Nano, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Superalloys Div, Shenyang 110016, Peoples R China 3.Indian Inst Technol, Dept Mat Sci & Engn, New Delhi 110016, India 4.Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore |
| 推荐引用方式 GB/T 7714 | Ren, Chenyu,Chen, Kai,Liang, Jingjing,et al. Microstructural evolution and its influence on the wear resistance of a laser directed energy deposited Ni-based single crystal superalloy[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2025,205:127-138. |
| APA | Ren, Chenyu,Chen, Kai,Liang, Jingjing,Narayan, R. Lakshmi,Ramamurty, Upadrasta,&Li, Jinguo.(2025).Microstructural evolution and its influence on the wear resistance of a laser directed energy deposited Ni-based single crystal superalloy.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,205,127-138. |
| MLA | Ren, Chenyu,et al."Microstructural evolution and its influence on the wear resistance of a laser directed energy deposited Ni-based single crystal superalloy".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 205(2025):127-138. |
入库方式： OAI收割
来源：金属研究所
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