Oxidation behavior of the directionally solidified Ni-base superalloy DS951 in air

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	Oxidation behavior of the directionally solidified Ni-base superalloy DS951 in air
	L. Huang; X. F. Sun; H. R. Guan; Z. Q. Hu
	2005
发表期刊	Oxidation of Metals
ISSN	0030-770X
卷号	64 期号:5-6 页码:303-318
摘要	The isothermal oxidation behavior at 1000, 1050 and 1100 degrees C and the cyclic oxidation behavior at 1000 degrees C of the directionally solidified Ni-base superalloy DS951 were investigated. The oxidized samples were characterized by SEM, EDAX, XRD. The alloy DS951 obeyed a two-stage parabolic rate law during isothermal oxidation at 1000-1100 degrees C. In cyclic conditions, the alloy showed no weight loss even after 1100 cycles. Cross-sectional examination revealed the development of faceted and needle-shaped AlN precipitates in the alloy subsurface region during cyclic oxidation, while no internal corrosion products were found in isothermal tests. Furthermore, a selective oxidation of MC carbides (M was predominately niobium with some chromium and tungsten) was observed along alloy grain boundaries and in interdendritic areas.
部门归属	chinese acad sci, inst met res, superalloy dept, state key lab corros & protect, shenyang 110016, peoples r china.;huang, l (reprint author), chinese acad sci, inst met res, superalloy dept, state key lab corros & protect, 72 wenhua rd, shenyang 110016, peoples r china;lhuang@imr.ac.cn
关键词	Ni-base Superalloy Ds951 Oxidation Kinetics Microstructure Cr-al Alloys Internal Oxidation High-temperature Theta-alpha-al2o3 Transformation Nitridation Scales
URL	查看原文
WOS记录号	WOS:000233103200002
引用统计	被引频次：16[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/321006/34878
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. Huang,X. F. Sun,H. R. Guan,et al. Oxidation behavior of the directionally solidified Ni-base superalloy DS951 in air[J]. Oxidation of Metals,2005,64(5-6):303-318.
APA	L. Huang,X. F. Sun,H. R. Guan,&Z. Q. Hu.(2005).Oxidation behavior of the directionally solidified Ni-base superalloy DS951 in air.Oxidation of Metals,64(5-6),303-318.
MLA	L. Huang,et al."Oxidation behavior of the directionally solidified Ni-base superalloy DS951 in air".Oxidation of Metals 64.5-6(2005):303-318.