TY - JOUR
T1 - In situ electrochemical nanoindentation of FeAl (100) single crystal
T2 - Hydrogen effect on dislocation nucleation
AU - Barnoush, Afrooz
AU - Bies, Christian
AU - Vehoff, Horst
PY - 2009/3
Y1 - 2009/3
N2 - The hydrogen effect on dislocation nucleation in FeAl single crystal with (100) surface orientation has been examined with the aid of a specifically designed nanoindentation setup for in situ electrochemical experiments. The effect of the electrochemical potential on the indent load-displacement curve, especially the unstable elastic-plastic transition (pop-in), was studied in detail. The observations showed a reduction in the pop-in load for both samples due to in situ hydrogen charging, which is reproducibly observed within sequential hydrogen charging and discharging. Clear evidence is provided that hydrogen atoms facilitate homogeneous dislocation nucleation.
AB - The hydrogen effect on dislocation nucleation in FeAl single crystal with (100) surface orientation has been examined with the aid of a specifically designed nanoindentation setup for in situ electrochemical experiments. The effect of the electrochemical potential on the indent load-displacement curve, especially the unstable elastic-plastic transition (pop-in), was studied in detail. The observations showed a reduction in the pop-in load for both samples due to in situ hydrogen charging, which is reproducibly observed within sequential hydrogen charging and discharging. Clear evidence is provided that hydrogen atoms facilitate homogeneous dislocation nucleation.
UR - http://www.scopus.com/inward/record.url?scp=63149145049&partnerID=8YFLogxK
U2 - 10.1557/jmr.2009.0084
DO - 10.1557/jmr.2009.0084
M3 - Article
AN - SCOPUS:63149145049
SN - 0884-2914
VL - 24
SP - 1105
EP - 1113
JO - Journal of Materials Research
JF - Journal of Materials Research
IS - 3
ER -