Název: Influence of Plastic Deformation on the Residual Stress Distribution and Fatigue Behaviour of High Strength Steels Welds
Autoři: Mráz, Ľ. ; Karlsson, L. ; Hamak, I. ; Mikula, Pavol ; Vrána, Miroslav
Typ dokumentu: Příspěvky z konference
Konference/Akce: 1st International Workshop on In-situ Studies with Photons, Neurtrons and Electron Scattering, Berlin (DE), 20090901
Rok: 2010
Jazyk: eng
Abstrakt: The effects of plastic deformation and cyclic loading on residual stress distribution have been studied at welds in high strength 800 MPa steel. Effects of residual stress levels on fatigue life are also presented. Tensile loading was used to induce precisely controlled plastic deformation at weld toes. Residual stress distributions were measured by neutron diffraction. The influence of fatigue loading on the residual stress level was much smaller than that of plastic deformation. A large drop of residual stresses in the vicinity of the welds was recognised after local straining at the level of 2%. Stresses decreased with up to 550 MPa in the region around the weld toe. The effect of local plastic deformation on fatigue properties was also found to be significant. Fatigue strength more than doubled compared to the non-strained as-welded condition.
Klíčová slova: neutron diffraction; residual stress
Zdrojový dokument: In-situ Studies with Photons, Neutrons and Electrons Scattering, ISBN 978-3-642-14793-7

Instituce: Ústav jaderné fyziky AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0281536

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-373398


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav jaderné fyziky
Konferenční materiály > Příspěvky z konference