Nanomechanical evaluation of the protectiveness of nitrided layers against hydrogen embrittlement

被引：19
作者：
Asgari, M. [2 ]
Barnoush, A. [1 ]
Johnsen, R. [2 ]
Hoel, R. [3 ]
机构：
[1] Univ Saarland, D-6600 Saarbrucken, Germany
[2] Norwegian Univ Sci & Technol, N-7034 Trondheim, Norway
[3] MOTecH Plasma Co, Oslo, Norway
来源：
CORROSION SCIENCE | 2012年 / 62卷
关键词：
Hydrogen embrittlement; EPMA; AFM; Stainless steel; HIGH-PURITY IRON; DISLOCATION NUCLEATION; MECHANICAL-PROPERTIES; STEEL; INDENTATION; NANOINDENTATION; MULTIPLICATION; SIZE;
D O I：
10.1016/j.corsci.2012.04.046
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this work, the nitrided layer on austenitic AISI 316L stainless steels were examined by means of in situ electrochemical nanoindentation, and the effect of electrochemically charged hydrogen on the mechanical properties were investigated. By using this method, changes in the mechanical properties due to the absorption of atomic hydrogen at different nitride layer depths have been traced. One important finding is that hydrogen charging of the nitriding layer can soften the layer and reduce the layer hardness, and the reduction of the nitrogen concentration in the nitride layer reduces this softening effect. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：51 / 60
页数：10
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