X-Ray diffraction technique applied to study of residual stresses after welding of duplex stainless steel plates
AUTOR(ES)
Monin, Vladimir Ivanovitch, Lopes, Ricardo Tadeu, Turibus, Sergio Nolêto, Payão Filho, João C., Assis, Joaquim Teixeira de
FONTE
Mat. Res.
DATA DE PUBLICAÇÃO
15/04/2014
RESUMO
Duplex stainless steel is an example of composite material with approximately equal amounts of austenite and ferrite phases. Difference of physical and mechanical properties of component is additional factor that contributes appearance of residual stresses after welding of duplex steel plates. Measurements of stress distributions in weld region were made by X-ray diffraction method both in ferrite and austenite phases. Duplex Steel plates were joined by GTAW (Gas Tungsten Arc Welding) technology. There were studied longitudinal and transverse stress components in welded butt joint, in heat affected zone (HAZ) and in points of base metal 10 mm from the weld. Residual stresses measured in duplex steel plates jointed by welding are caused by temperature gradients between weld zone and base metal and by difference of thermal expansion coefficients of ferrite and austenite phases. Proposed analytical model allows evaluating of residual stress distribution over the cross section in the weld region.
Documentos Relacionados
- Structure of corneal scar tissue: an X-ray diffraction study.
- X-ray diffraction of actively shortening muscle.
- X-ray diffraction and calorimetric study of N-lignoceryl sphingomyelin membranes.
- THE REPLICATIVE FORM OF MS2 RNA: AN X-RAY DIFFRACTION STUDY*
- Residual Stress Evaluation by X-Ray Diffraction and Hole-Drilling in an API 5L X70 Steel Pipe Bent by Hot Induction