TY - GEN
T1 - Hydrogen interaction with residual stresses in steel studied by synchrotron X-ray diffraction
AU - Dabah, Eitan
AU - Kannengiesser, Thomas
AU - Eliezer, Dan
AU - Boellinghaus, Thomas
PY - 2014/1/1
Y1 - 2014/1/1
N2 - The residual stresses state in a material has an important role in the mechanism of cracking, induced or assisted by hydrogen. In this contribution, the beamline EDDI at BESSY II in Berlin was used in order to investigate the influence of hydrogen upon the residual stresses state existing in a Supermartensitic stainless steel sample. The method used for calculating the residual stresses is the "sin2 ψ" method. This method involves the usage of high energy X-ray diffraction in order to measure the residual stress state and magnitude. It was found that hydrogen presence has a significant influence upon the magnitude of the residual stresses, as its value decreases with high hydrogen content. This effect is reversible, as hydrogen desorbs from the sample the residual stress magnitude gains its initial value before hydrogen charging.
AB - The residual stresses state in a material has an important role in the mechanism of cracking, induced or assisted by hydrogen. In this contribution, the beamline EDDI at BESSY II in Berlin was used in order to investigate the influence of hydrogen upon the residual stresses state existing in a Supermartensitic stainless steel sample. The method used for calculating the residual stresses is the "sin2 ψ" method. This method involves the usage of high energy X-ray diffraction in order to measure the residual stress state and magnitude. It was found that hydrogen presence has a significant influence upon the magnitude of the residual stresses, as its value decreases with high hydrogen content. This effect is reversible, as hydrogen desorbs from the sample the residual stress magnitude gains its initial value before hydrogen charging.
KW - Energy dispersive diffraction
KW - Hydrogen embrittlement
KW - Residual stresses
KW - Supermartensitic steel
UR - http://www.scopus.com/inward/record.url?scp=84891322478&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/MSF.772.91
DO - 10.4028/www.scientific.net/MSF.772.91
M3 - Conference contribution
AN - SCOPUS:84891322478
SN - 9783037859117
T3 - Materials Science Forum
SP - 91
EP - 95
BT - Mechanical Stress Evaluation by Neutrons and Synchrotron Radiation VI
PB - Trans Tech Publications Ltd
T2 - 6th International Conference on Mechanical Stress Evaluation by Neutrons and Synchrotron Radiation, MECA SENS VI 2011
Y2 - 7 September 2011 through 9 September 2011
ER -