izvorni znanstveni rad
After welding, a change in microstructure, hardness and residual stress occurs in the weld
and in the heat-affected zone. In the work, two 120 mm thick plates made of structural steel S235JR
were welded into a butt joint using the process of electric arc welding under powder protection (EPP).
By choosing the annealing temperature and time for the reduction of residual stresses, according to
the ISO 14745:2007 standard, three different states of hardness distribution and residual stresses on
the weld section were obtained. Using statistical modeling, the correlation coefficient between the
hardness tested by the Vickers method and the residual stresses determined by the X-ray diffraction
(XRD) method was determined.
S235JR steel; residual stresses; XRD analysis
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