Title of article
Hydrogen effects on tensile properties of EUROFER 97 and ODS-EUROFER steels
Author/Authors
Yagodzinskyy، نويسنده , , Y. and Malitckii، نويسنده , , E. and Ganchenkova، نويسنده , , M. and Binyukova، نويسنده , , S. and Emelyanova، نويسنده , , O. and Saukkonen، نويسنده , , T. and Hنnninen، نويسنده , , H. and Lindau، نويسنده , , R. and Vladimirov، نويسنده , , P. and Moeslang، نويسنده , , A.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2014
Pages
6
From page
435
To page
440
Abstract
Hydrogen effects on the mechanical tensile properties of the ferrite–martensite EUROFER 97 and ODS-EUROFER steels were studied after electrochemical hydrogen charging at room temperature. Hydrogen was introduced into the steels from 0.1 N NaOH solution under controlled cathodic potential. Hydrogen TDS measurements show that yttria nanoparticles increase considerably the hydrogen uptake in ODS-EUROFER steel in comparison to that in EUROFER 97 steel. Hydrogen has only a minor effect on the yield stress and tensile strength of the studied steels. EUROFER 97 and ODS-EUROFER steels manifest rather different sensitivity to hydrogen embrittlement. It is shown that hydrogen reduces markedly elongation to fracture of ODS-EUROFER steel, if hydrogen concentration exceeds a certain critical value. FEG-SEM fractography observations evidence the intergranular fracture mode of ODS-EUROFER steel. The possible role of yttria nanoparticles in the hydrogen embrittlement mechanism is discussed.
Journal title
Journal of Nuclear Materials
Serial Year
2014
Journal title
Journal of Nuclear Materials
Record number
1357228
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