Otpornost prema lomu, tvrdoća i mikrostruktura šavnih cevi različitog prečnika izrađenih od čelika P235TR1 Naučni rad
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Čelični cevovodi u industrijskim postrojenjima se sastoje od različitih elemenata, uključujući bešavne i/ili zavarene (šavne) cevi. Osobine šavnih cevi, uključujući ponašanje materijala cevi pri lomu, zavise i od osnovnog metala i od metala šava. U ovom radu razmatrane su dve šavne cevi različitih prečnika, izrađene od čelika P235TR1. Tvrdoća i mikrostruktura su analizirane na uzorcima isečenim iz cevi u zoni šava, da bi se odredio uticaj heterogenosti. Otpornost prema lomu materijala cevovoda, tj. oba osnovna metala i oba šava, je određena na osnovu ispitivanja epruveta oblika prstena sa oštrim koncentratorima napona, predloženih u prethodnim studijama. Poređenjem krivih otpornosti prema rastu prsline određene su razlike između dve ispitivane cevi, kao i uticaj heterogenosti izazvan postojanjem zavarenog spoja. Razmotren je uticaj oblika početnog koncentratora napona, oštrog žleba odnosno zamorne početne prsline.
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Funding data
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Ministarstvo Prosvete, Nauke i Tehnološkog Razvoja
Grant numbers 451-03-47/2023-01/200135
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