engleski

FATIGUE STRENGTH OF WELDS IN THE VIEW OF RESIDUAL STRESSES

The fatigue strength of metals as well as of weld joint regions in metals depends on the hardness, the size of defects and the size of grains. The fatigue strength depends on the local welding residual stress level, too. The effects of residual stresses level and grain size on the fatigue strength of real quality weld materials were experimentally determined using samples prepared on a thermal cycle simulator and a laboratory furnace. Variations of hardness in welds and clad materials were assessed and discussed.

fatigue strength of welds; residual stresses

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