Details
| Original language | English |
|---|---|
| Pages (from-to) | 101-105 |
| Number of pages | 5 |
| Journal | Scripta materialia |
| Volume | 136 |
| Publication status | Published - 28 Apr 2017 |
Abstract
The effects of electrochemical hydrogen charging on the stress relaxation and strain-aging of 〈111〉- and 〈001〉-oriented single crystals of Hadfield steel were studied under tension at room temperature. An orientation dependence of stress relaxation and strain-aging-assisted yield-drop phenomena was observed for hydrogen-free 〈111〉- and 〈001〉- oriented single crystals. Hydrogen charging up to five hours increased the stress relaxation rate for slip-associated deformation in 〈001〉-oriented single crystals and decreased it for twinning-assisted deformation in 〈111〉-oriented specimens. The present results demonstrate that different mechanisms dominate the interaction of hydrogen with dislocations, stacking faults and twins.
Keywords
- Austenitic steel, Dislocation slip, Hydrogen, Stacking faults, Twinning
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
- Materials Science(all)
- Metals and Alloys
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In: Scripta materialia, Vol. 136, 28.04.2017, p. 101-105.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Hydrogen-enhanced orientation dependence of stress relaxation and strain-aging in Hadfield steel single crystals
AU - Astafurova, E. G.
AU - Moskvina, V. A.
AU - Maier, G. G.
AU - Melnikov, E. V.
AU - Zakharov, G. N.
AU - Astafurov, S. V.
AU - Maier, H. J.
PY - 2017/4/28
Y1 - 2017/4/28
N2 - The effects of electrochemical hydrogen charging on the stress relaxation and strain-aging of 〈111〉- and 〈001〉-oriented single crystals of Hadfield steel were studied under tension at room temperature. An orientation dependence of stress relaxation and strain-aging-assisted yield-drop phenomena was observed for hydrogen-free 〈111〉- and 〈001〉- oriented single crystals. Hydrogen charging up to five hours increased the stress relaxation rate for slip-associated deformation in 〈001〉-oriented single crystals and decreased it for twinning-assisted deformation in 〈111〉-oriented specimens. The present results demonstrate that different mechanisms dominate the interaction of hydrogen with dislocations, stacking faults and twins.
AB - The effects of electrochemical hydrogen charging on the stress relaxation and strain-aging of 〈111〉- and 〈001〉-oriented single crystals of Hadfield steel were studied under tension at room temperature. An orientation dependence of stress relaxation and strain-aging-assisted yield-drop phenomena was observed for hydrogen-free 〈111〉- and 〈001〉- oriented single crystals. Hydrogen charging up to five hours increased the stress relaxation rate for slip-associated deformation in 〈001〉-oriented single crystals and decreased it for twinning-assisted deformation in 〈111〉-oriented specimens. The present results demonstrate that different mechanisms dominate the interaction of hydrogen with dislocations, stacking faults and twins.
KW - Austenitic steel
KW - Dislocation slip
KW - Hydrogen
KW - Stacking faults
KW - Twinning
UR - http://www.scopus.com/inward/record.url?scp=85018365658&partnerID=8YFLogxK
U2 - 10.1016/j.scriptamat.2017.04.028
DO - 10.1016/j.scriptamat.2017.04.028
M3 - Article
AN - SCOPUS:85018365658
VL - 136
SP - 101
EP - 105
JO - Scripta materialia
JF - Scripta materialia
SN - 1359-6462
ER -