Time-resolved grazing-incidence X-ray diffraction measurement to understand the effect of hydrogen on surface strain development in super duplex stainless steel

SCRIPTA MATERIALIA

卷:187

Article

Ornek, Cem^1,2  Larsson, Alfred³  Harlow, Gary S.³  Zhang, Fan¹  Kroll, Robin⁴  Carla, Franceso⁵  Hussain, Hadeel⁵  Kivisakk, Ulf⁶  Engelberg, Dirk L.⁴  Lundgren, Edvin³  Pan, Jinshan¹ 

[1] KTH Royal Inst Technol, Div Surface & Corros Sci, Stockholm, Sweden

[2] Istanbul Tech Univ, Dept Met & Mat Engn, Istanbul, Turkey

[3] Lund Univ, Div Synchrotron Radiat Res, Lund, Sweden

[4] Univ Manchester, Mat Performance Ctr, Dept Mat, Manchester, Lancs, England

[5] Diamond Light Source, Didcot, Oxon, England

[6] Sandvik Mat Technol, Sandviken, Sweden

关键词: X-ray diffraction (XRD);    Synchrotron radiation;    Stainless steels;    Dual phases;    Hydrogen embrittlement;   

DOI  :  10.1016/j.scriptamat.2020.05.061

来源: Elsevier

【 摘 要 】

Grazing-incidence x-ray diffraction was employed to measure, operando, during electrochemical hydrogen charging, the lattice strain development of the near-surface in super duplex stainless steel under applied tensile load. Hydrogen absorption led to the formation of tensile strains in both the austenite (gamma) and ferrite (delta) phases perpendicular to the loading axis, whereas compressive strains were formed in the ferrite phase parallel to the loading direction, despite the acting tensile load. The earliest stages of degradation are discussed in light of understanding hydrogen embrittlement. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd.

【 授权许可】

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