Atom probe tomography of stress corrosion crack tips in SUS316 stainless steels

被引：54
作者：
Meisnar, Martina [1 ]
Moody, Michael [1 ]
Lozano-Perez, Sergio [1 ]
机构：
[1] Univ Oxford, Dept Mat, Oxford OX1 3PH, England
来源：
CORROSION SCIENCE | 2015年 / 98卷
基金：
英国工程与自然科学研究理事会;
关键词：
Stainless steel; STEM; Stress corrosion; Intergranular corrosion; Oxidation; Reactor conditions; TRANSMISSION ELECTRON-MICROSCOPY; GRAIN-BOUNDARY OXIDATION; SPECIMEN PREPARATION; MODEL;
D O I：
10.1016/j.corsci.2015.06.008
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Novel atom probe tomography (APT) data of an intergranular stress corrosion crack tip has been acquired. Using APT for stress corrosion cracking research, very small, localized features and their distribution around the crack tip can be studied in 3D. This work details the development of a technique for the preparation of atom probe needles. Initial characterization via analytical transmission electron microscopy provides with a complementary analysis and accurately locates features that can be correlated with the reconstructed APT data. Ni enrichment and intergranular oxidation ahead of the crack tip have been studied with APT in 3D and with near-atomic resolution. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：661 / 671
页数：11
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