High temperature oxidation and oxides distribution characteristics of Ni-6.0Al-6.5Ta-8.5Mo-6.5Cr single crystal alloy

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	High temperature oxidation and oxides distribution characteristics of Ni-6.0Al-6.5Ta-8.5Mo-6.5Cr single crystal alloy
	Tian, SG ; Guo, H ; Hu, Z ; Li, TF
通讯作者	Tian, SG()
	2001-04-18
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	37 期号:4 页码:358-362
摘要	The isothermal oxidation characteristics and their influence on mechanical properties of Ni-6.0Al-6.5Ta-8.5Mo-6.5Cr single crystal alloy were investigated by means of SEM and EDAX. Results show that the internal oxidation obviously occurred in sub-layer of the alloy uncoated during high temperature oxidation in air. The scale contains large amounts of Al which was easily peeled off in the initial stage of high temperature oxidation. Cr, Al and Ta were identified as the main components of the scale formed in the near surface layer of the alloy. The internal oxide particles, alpha -Al2O3, With larger sizes formed in the sublayer. No oxides of Mo was found in the alloy during high temperature oxidation. The poor Al areas appear in near internal oxides, which resulted in the disappearance of gamma' strengthening phase. When the samples were coated with Al, the size of the poor Al areas was obviously decreased, no larger size internal oxides were found, which improved obviously the stress rupture property of the single crystal samples investigated.
关键词	single crystal nickel-base superalloy high temperature oxidation internal oxide stress rupture property
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000172766600005
出版者	SCIENCE CHINA PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/113573
专题	中国科学院金属研究所
通讯作者	Tian, SG
作者单位	1.Shenyang Univ Technol, Dept Mat Sci & Engn, Shenyang 110023, Peoples R China 2.Chinese Acad Sci, Met Res Inst, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Tian, SG,Guo, H,Hu, Z,et al. High temperature oxidation and oxides distribution characteristics of Ni-6.0Al-6.5Ta-8.5Mo-6.5Cr single crystal alloy[J]. ACTA METALLURGICA SINICA,2001,37(4):358-362.
APA	Tian, SG,Guo, H,Hu, Z,&Li, TF.(2001).High temperature oxidation and oxides distribution characteristics of Ni-6.0Al-6.5Ta-8.5Mo-6.5Cr single crystal alloy.ACTA METALLURGICA SINICA,37(4),358-362.
MLA	Tian, SG,et al."High temperature oxidation and oxides distribution characteristics of Ni-6.0Al-6.5Ta-8.5Mo-6.5Cr single crystal alloy".ACTA METALLURGICA SINICA 37.4(2001):358-362.