Interdiffusion within the beta-phase region of the Ni-Co-Cr-Al quaternary system

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	Interdiffusion within the beta-phase region of the Ni-Co-Cr-Al quaternary system
	H. Wei ; H. Y. Zhang ; X. F. Sun ; M. S. Dargusch ; X. Yao
刊名	Journal of Alloys and Compounds
	2010
卷号	493 期号:1-2 页码:507-516
关键词	Diffusion NiAl phase Electron microprobe multicomponent diffusion couples square root diffusivity transfer-matrix method zero-flux planes intermetallic compound coefficients ternary nickel alloys fe
ISSN号	0925-8388
中文摘要	Interdiffusion coefficients within the beta-phase region of the nickel-cobalt-chromium-aluminum (Ni-Co-Cr-Al) quaternary system were estimated by square root diffusivity analysis. The obtained results indicated that the cross interdiffusion coefficients D(ij) (i not equal j, i, j = Al, Cr, Co) other than D(AlCo), were less than the main interdiffusion coefficients Do (i = j), and that the values of D(Ali) were greater than those of D(Cri) and D(Coi). This finding suggests that the addition of chromium decreases the interdiffusion coefficients of aluminum and cobalt, but the addition of cobalt did not cause an obvious change in the interdiffusion coefficients of aluminum and chromium in the beta-phase region. The different effects associated with the additions of chromium and cobalt were qualitatively discussed in light of the relationship between the thermodynamic properties of the system and Wagner's interaction parameter. The results revealed that the different effects could be ascribed to the stronger thermodynamic interactions between aluminum and cobalt compared to that between aluminum and chromium. (C) 2009 Elsevier B.V. All rights reserved.
原文出处	://WOS:000276054200104
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/31573]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	H. Wei,H. Y. Zhang,X. F. Sun,et al. Interdiffusion within the beta-phase region of the Ni-Co-Cr-Al quaternary system[J]. Journal of Alloys and Compounds,2010,493(1-2):507-516.
APA	H. Wei,H. Y. Zhang,X. F. Sun,M. S. Dargusch,&X. Yao.(2010).Interdiffusion within the beta-phase region of the Ni-Co-Cr-Al quaternary system.Journal of Alloys and Compounds,493(1-2),507-516.
MLA	H. Wei,et al."Interdiffusion within the beta-phase region of the Ni-Co-Cr-Al quaternary system".Journal of Alloys and Compounds 493.1-2(2010):507-516.