Grain-boundary structure and segregation behavior in a nickel-base stainless alloy

被引：59

作者：

Baik, Sung-Il ^{[1
]}

Olszta, M. J. ^{[3
]}

Bruemmer, S. M. ^{[3
]}

Seidman, David N. ^{[1
,2
]}

机构：

[1] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA

[2] Northwestern Univ, Ctr Atom Probe Tomog, Evanston, IL 60208 USA

[3] Pacific NW Natl Lab, Richland, WA 99352 USA

来源：

SCRIPTA MATERIALIA | 2012年 / 66卷 / 10期

关键词：

Grain boundary composition; Grain boundary structure; Segregation; Nickel-base alloy; Atom-probe tomography; ATOMIC-SCALE; SOLUTE; INTERFACE; CARBON;

D O I：

10.1016/j.scriptamat.2012.02.014

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Atom-probe tomography (APT) is utilized to obtain three-dimensional chemical information concerning grain boundary (GB) segregation in a Ni-Cr-Fe alloy 600 with atomic spatial resolution. Detailed crystallography of GBs is determined using an approach that combines electron backscatter diffraction and focused ion-beam microscopy to establish a GB's five macroscopic degrees of freedom, followed by an APT GB composition analysis. Characterizations of GB microstructure and microchemistry are performed to improve our understanding of mechanisms controlling intergranular attack and stress-corrosion cracking. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：809 / 812

页数：4

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