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Dependence of Ni, Al and B boundary concentrations on the B bulk concentration for the Ni3Al-x at.% B grain boundary
Zheng, LP(郑里平); Li, DX; Qiu, S; Zhou, WJ; Jiang, BY
2001
Source PublicationNUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
ISSN0168-583X
Volume184Issue:3Pages:354
AbstractWe have applied the embedded atom method (EAM). to calculate boundary concentration distributions of Ni, Al and B, and B probabilities in the "interstitial" and, the "substitutional" sites, at the Ni3Al-x at.% B (100% Ni\100% Ni) [001]/Sigma5(210)/36.87 degrees. grain boundary at the equilibrium. We propose that the bulk effects of B on the grain boundary include the positive effect on the Ni enrichment at the grain boundary, i.e. the B atoms induce Ni atoms to substitute into Al sites, the negative effect on it, i.e. the B atoms substitute into Ni sites, and the neutral effect on it, i.e. the B atoms insert into interstices in the grain boundary. Our calculations show that owing to combination of the positive effect and the negative effect, corresponding to B-enrichment increasing, the Ni-enrichment and the Al-depletion become more and more obvious, when x increases from 0.1 to 0.5. Then, corresponding to B-enrichment decreasing, the Ni-enrichment and the Al-depletion also become more and more obvious, when x decreases from 0.9 to 0.5. Thus, between low (x = 0.1) and high (x = 0.9) B bulk concentrations, there is a B bulk concentration (x = 0.5), at which the Ni-enrichment and the Al-depletion become the most obvious, even if Ni is approximately saturated. (C) 2001 Elsevier Science B.V. All rights reserved.
Indexed BySCI
Language英语
Funding Project应物所项目组
WOS IDWOS:000171929600007
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/9921
Collection中科院上海原子核所2003年前
Recommended Citation
GB/T 7714
Zheng, LP,Li, DX,Qiu, S,et al. Dependence of Ni, Al and B boundary concentrations on the B bulk concentration for the Ni3Al-x at.% B grain boundary[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,2001,184(3):354.
APA Zheng, LP,Li, DX,Qiu, S,Zhou, WJ,&Jiang, BY.(2001).Dependence of Ni, Al and B boundary concentrations on the B bulk concentration for the Ni3Al-x at.% B grain boundary.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,184(3),354.
MLA Zheng, LP,et al."Dependence of Ni, Al and B boundary concentrations on the B bulk concentration for the Ni3Al-x at.% B grain boundary".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS 184.3(2001):354.
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