Direct observation of hydrogen-enhanced plasticity in super duplex stainless steel by means of in situ electrochemical methods

被引：53

作者：

Barnoush, Afrooz ^{[1
]}

Zamanzade, Mohammad ^{[1
]}

Vehoff, Horst ^{[1
]}

机构：

[1] Univ Saarland, Dept Mat Sci, D-66041 Saarbrucken, Germany

来源：

SCRIPTA MATERIALIA | 2010年 / 62卷 / 05期

关键词：

Hydrogen embrittlement; Dislocation; Residual stress; Magnetic force microscopy; Atomic force microscopy; MARTENSITE-TRANSFORMATION; SURFACE CRACKING; NANOINDENTATION; AUSTENITE; FERRITE;

D O I：

10.1016/j.scriptamat.2009.11.007

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In situ electrochemical hydrogen charging in combination with atomic force microscopy and optical microscopy has been used to study the effect of hydrogen on the austenite phase in super duplex stainless steel. Observations showed that hydrogen charging results in an irreversible deformation of austenite. High residual tensile stresses form in austenite during quench annealing. These stresses, in combination with the activation of dislocation sources by hydrogen, result in formation of slip lines on the austenite surface during in situ hydrogen charging. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：242 / 245

页数：4

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