Epitaxial growth and oxidation behavior of an overlay coating on a Ni-base single-crystal superalloy by laser cladding

doi:10.1016/j.jmst.2018.10.011

IMR OpenIR

	Epitaxial growth and oxidation behavior of an overlay coating on a Ni-base single-crystal superalloy by laser cladding
	Liang, Jingjing 1,3; Liu, Yongsheng 2; Li, Jinguo 1; Zhou, Yizhou 1; Sun, Xiaofeng 1
通讯作者	Li, Jinguo(jgli@imr.ac.cn) ; Zhou, Yizhou(yzzhou@imr.ac.cn)
	2019-02-01
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	35 期号:2 页码:344-350
摘要	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.
关键词	Laser cladding Single crystal growth Epitaxy Overlay coating
资助者	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
收录类别	SCI
语种	英语
资助项目	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研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000451755900011
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：46[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/321006/130562
专题	中国科学院金属研究所
通讯作者	Li, Jinguo; Zhou, Yizhou
作者单位	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
推荐引用方式 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.