| Epitaxial growth and oxidation behavior of an overlay coating on a Ni-base single-crystal superalloy by laser cladding | |
| Liang, Jingjing1,3; Liu, Yongsheng2; Li, Jinguo1; Zhou, Yizhou1; Sun, Xiaofeng1 | |
| Corresponding Author | Li, Jinguo(jgli@imr.ac.cn) ; Zhou, Yizhou(yzzhou@imr.ac.cn) |
| 2019-02-01 | |
| Source Publication | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| ISSN | 1005-0302 |
| Volume | 35Issue:2Pages:344-350 |
| Abstract | An overlay coating material was deposited on a single crystal superalloy SRR99 by laser cladding. The microstructure and oxidation behavior of this coating was investigated through scanning electron microscopy (SEM) and X-ray diffraction (XRD). The results indicated that although the composition of the coating was chosen based on the gamma' composition in Rene N5 superalloy, the primary solidification phase of this coating during laser cladding was gamma-Ni Furthermore, under the laser cladding condition, fine parallel dendrites grew epitaxially in the coating from the substrate, indicating the single crystal structure of the substrate was reproduced. When the single crystal MCrAlY coating was oxidized at 1000 degrees, both theta-Al2O3 and alpha-Al2O3 formed during initial oxidation process. As the oxidation time proceeded, the presence of theta-Al2O3 facilitated the formation of NiAl2O4 spinel oxide. Once the spinel was observed, it flourished and induced some porosity in the scale. When the scale thickness increased to 6-7 mu m, large area spallation of the scale began. (C) 2018 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
| Keyword | Laser cladding Single crystal growth Epitaxy Overlay coating |
| Funding Organization | National Natural Science Foundation of China (NSFC) ; National High Technology Research and Development Program (863 Program) ; State Key Laboratory of Solidification Processing in NWPU ; Theme Special Project of Shenyang Key Science and Technology Research and Development Programs |
| DOI | 10.1016/j.jmst.2018.10.011 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China (NSFC)[51771190] ; National Natural Science Foundation of China (NSFC)[51401210] ; National Natural Science Foundation of China (NSFC)[U1508213] ; National Natural Science Foundation of China (NSFC)[51701210] ; National Natural Science Foundation of China (NSFC)[51871221] ; National High Technology Research and Development Program (863 Program)[2014AA041701] ; State Key Laboratory of Solidification Processing in NWPU[SKLSP201834] ; Theme Special Project of Shenyang Key Science and Technology Research and Development Programs[17-85-0-00] |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000451755900011 |
| Publisher | JOURNAL MATER SCI TECHNOL |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/130562 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Li, Jinguo; Zhou, Yizhou |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 2.Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China 3.Space Mfg Technol CAS Key Lab, Beijing 100094, Peoples R China |
| Recommended Citation GB/T 7714 | Liang, Jingjing,Liu, Yongsheng,Li, Jinguo,et al. Epitaxial growth and oxidation behavior of an overlay coating on a Ni-base single-crystal superalloy by laser cladding[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2019,35(2):344-350. |
| APA | Liang, Jingjing,Liu, Yongsheng,Li, Jinguo,Zhou, Yizhou,&Sun, Xiaofeng.(2019).Epitaxial growth and oxidation behavior of an overlay coating on a Ni-base single-crystal superalloy by laser cladding.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,35(2),344-350. |
| MLA | Liang, Jingjing,et al."Epitaxial growth and oxidation behavior of an overlay coating on a Ni-base single-crystal superalloy by laser cladding".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 35.2(2019):344-350. |
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