<p>Cilj rada je bila izrada kvalitetnog zavarenog spoja pancirnog čelika.<br />Zavareni spoj poseduje dobre zatezne karakteristike, kao i visoku energiju<br />udara u metal šavu i ZUT-u, visoku otpornost na propagaciju prsline u<br />metal šavu i ZUT-u. Osnovni materijal ima najveću zateznu čvrstoću,<br />najnižu energiju udara, najmanju žilavost loma i otpornost na propagaciju<br />prsline. Nakon balističkih ispitivanja ustanovljeno je da ZUT i osnovni<br />materijal poseduju balističku otpornost, dok metal šava ne zadovoljava<br />standarde. Ispitivanjem gasne hromatografije ustanovljena je niska<br />količina difundovanog i zadržanog vodonika u zoni metal šava. U skladu<br />sa tim se zaključuje da su parameteri zavarivanja, kao i dodatni materijal<br />odgovarajuće izabrani. Na osnovu ispitivanja brzine rasta zamorne<br />prsline, određen je preostali vek oklopnih vozila koja se prave od<br />pancirnog čelika.</p> / <p>The aim of this paper was to produce a high-quality welded joint of armored steel.<br />The welded joint has good tensile properties, as well as a high impact energy in<br />the weld metal and HAZ, and high resistance to crack propagation in the weld<br />metal and HAZ. The base metal has the highest tensile strength, the lowest<br />impact energy and the smallest fracture toughness and crack propagation<br />resistance. After ballistic testing, the HAZ and basic metals have been found to<br />have ballistic resistance, while the weld metal does not meet the standards. Gas<br />chromatography analysis detected a low amount of diffused and retained<br />hydrogen in the metal seam zone. It may therefore be concluded that the welding<br />parameters and the additional material have been appropriately selected.<br />Based on the study of the fatigue crack growth rate, the fatigue life of armored<br />vehicles was predicted.</p>