Effect of hydrogen on the hardness of different phases in super duplex stainless steel

被引：41
作者：
Kheradmand, Nousha [1 ]
Johnsen, Roy [1 ]
Olsen, Jim Stian [2 ,3 ]
Barnoush, Afrooz [1 ]
机构：
[1] Dept Engn Design & Mat, Richard Birkelands Vei 2b, N-7491 Trondheim, Norway
[2] Dept Struct Engn, Richard Birkelandsuei 1A, N-7491 Trondheim, Norway
[3] Aker Solut, Fornebu, Norway
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2016年 / 41卷 / 01期
关键词：
Super duplex stainless steel; Austenite; Ferrite; Electrochemical nanoindentation; Nano hardness; Residual stress; SITU ELECTROCHEMICAL NANOINDENTATION; RESIDUAL-STRESS; ELASTIC-MODULUS; SINGLE-CRYSTAL; EMBRITTLEMENT; CRACKING; SURFACE; INDENTATION; AUSTENITE; EVOLUTION;
D O I：
10.1016/j.ijhydene.2015.10.106
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Despite its superior corrosion resistance, super duplex stainless steels (SDSS) are prone to hydrogen embrittlement. In this paper, a novel in situ electrochemical nanoindentation technique is used to investigate the hydrogen effect on the nanomechanical response of the existing phases in SDSS, i.e. ferrite and austenite. A systematic change in electrochemical (EC) charging potential revealed the interconnected nature of the hydrogen effect on the nanomechanical properties of SDSS. It is shown that the hydrogen effects in each phase are very different and are strongly coupled with the existing residual stresses in the microstructure induced during the manufacturing and/or induced by EC hydrogen charging. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：704 / 712
页数：9
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