Development of steels for fabrication of welded constructions with improved safety

Physical and metallurgical basis of historical steel development and some modern solutions for specific applications, together with predictions and projections of future development are reviewed in this paper. Undoubtedly, in future, steel will remain absolutely most used construction material due to the best relationship properties/price. Dominant place is reserved for steels for welded constructions, and their further development will be provided by application of concept of Total Thermomechanical Control Processing (TTCMP). Simultaneously, predictions consider intensive Development in the field of welding procedures, filler materials, modeling of TMCP and welding, with aim to provide fabrication of welded constructions with improved safety.
U radu su izložene fiziko-metalurške osnove istorijskog razvoja čeličnih materijala, primeri savremenih rešenja čelika za specifične namene i pretpostavke daljeg razvoja. Nedvosmisleno, u budućnosti, čelični materijali će ostati suvereno najrasprostranjeniji konstrukcioni materijal, zbog najboljeg odnosa kvalitet/cena. Dominantno mesto će zauzimati čelici predviđeni za izradu zavarenih konstrukcija, a njihov razvoj će biti omogućen konceptom totalne termomehaničke prerade. Uporedo, predviđa se intenzivan razvoj na polju tehnologija zavarivanja, dodatnih materijala, matematičkog modeliranja termomehaničke prerade i zavarivanja, sa ciljem da se obezbedi izrada zavarenih konstrukcija povišene sigurnosti.