Oxidation behavior of a novel nickel-based single crystal superalloy at elevated temperature

doi:10.1016/j.vacuum.2020.109284

CORC > 金属研究所 > 中国科学院金属研究所

	Oxidation behavior of a novel nickel-based single crystal superalloy at elevated temperature
	Tan, Z. H.1,2; Wang, X. G.2; Song, W.2; Yang, Y. H.2; Liu, J. L.2; Liu, J. D.2; Yang, L.1; Zhou, Y. Z.2; Sun, X. F.2
刊名	VACUUM
	2020-05-01
卷号	175 页码:10
关键词	Single crystal superalloys Oxidation mechanism Kinetics Film evolution Microstructure degradation
ISSN号	0042-207X
DOI	10.1016/j.vacuum.2020.109284
通讯作者	Wang, X. G.(xgwang11b@imr.ac.cn) ; Zhou, Y. Z.(yzzhou@imr.ac.cn) ; Sun, X. F.(xfsun@imr.ac.cn)
英文摘要	The oxidation behavior of a novel low-cost single crystal superalloy was thoroughly studied at high temperature. Three distinctive stages were observed in the oxidation kinetics curve, which corresponded to the different oxide film structures and oxidation mechanisms. The outer NiO grains, several spinels as well as inner Al2O3 layer took shape at first stage while the oxidation dynamics obeyed cubic law. However, the NiO particles began to spall off the specimen surface and the continuity of Al2O3 layer was partly destroyed in the next several hours. The alloy went through severe oxidation weight gaining at second stage which could be rationalized by the severe oxidation of W and Mo. The non-protective NiWO4 and NiMoO4 spinels were surprisingly found and the Al2O3 particles demonstrated the rod-like morphology during this period. The re-formation of dense Al2O3 layer and the volatilization of MoO3 gave rise to the reduction of mass gaining rate in the final stage, additionally, the oxidation kinetics transformed to subparabolic characteristic. Moreover, the experimental alloy exhibited good microstructural stability at elevated temperature, however, the microstructure degradation was considerably serious. The entire thickness of gamma'-free layers had exceeded 0.1 mm on the alloy surface after 200 h oxidation at 1120 degrees C.
资助项目	National Key R&D Program of China[2017YFA0700704] ; National Science and Technology Major Project[2017-VI-0002-0072] ; National Natural Science Foundation of China (NSFC)[51601192] ; National Natural Science Foundation of China (NSFC)[51671188] ; State Key Lab of Advanced Metals and Materials Open Fund[2018-Z07] ; Youth Innovation Promotion Association, Chinese Academy of Sciences
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000524971800027
资助机构	National Key R&D Program of China ; National Science and Technology Major Project ; National Natural Science Foundation of China (NSFC) ; State Key Lab of Advanced Metals and Materials Open Fund ; Youth Innovation Promotion Association, Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/138328]
专题	金属研究所_中国科学院金属研究所
通讯作者	Wang, X. G.; Zhou, Y. Z.; Sun, X. F.
作者单位	1.Shenyang Univ Technol, Sch Mat Sci & Engn, 111 Shenliao Rd, Shenyang 110870, Peoples R China 2.Chinese Acad Sci, Superalloys Div, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Tan, Z. H.,Wang, X. G.,Song, W.,et al. Oxidation behavior of a novel nickel-based single crystal superalloy at elevated temperature[J]. VACUUM,2020,175:10.
APA	Tan, Z. H..,Wang, X. G..,Song, W..,Yang, Y. H..,Liu, J. L..,...&Sun, X. F..(2020).Oxidation behavior of a novel nickel-based single crystal superalloy at elevated temperature.VACUUM,175,10.
MLA	Tan, Z. H.,et al."Oxidation behavior of a novel nickel-based single crystal superalloy at elevated temperature".VACUUM 175(2020):10.