20.500.12556/RUL-134280 Effect of Zr additions on non-metallic inclusions in X11CrNiMo12 steel The production of clean steel is associated with high-quality steel grades for demanding applications. The formation of oxide inclusions mainly depends on the deoxidation practice; it is usually carried out through Al additions, but alumina inclusions can have detrimental effects. An alternative zirconium inclusion modification was used in a creep-resistant steel to improve the cleanliness of laboratory-made steel. The thermodynamics behind the inclusion modification are presented, the reaction products are identified and the steel cleanliness improvement is quantified. The resulting influence of zirconium addition on non-metallic inclusions and mechanical properties is discussed. While the Zr additions drastically reduce the non-metallic inclusion size and area, additions above a certain amount result in the formation of zirconium nitrides that ultimately soften the martensitic steel due to the depletion of nitrogen in solid solution. clean steel non-metallic inclusions Zr addition creep-resistant steel microstructure čisto jeklo nekovinski vključki Zr dodatek jeklo proti lezenju mikrostruktura true false true Angleški jezik Slovenski jezik Članek v reviji 2022-01-04 15:42:17 2022-01-04 15:42:18 2022-09-13 03:54:21 0000-00-00 00:00:00 2020 0 0 9 str. iss. 9, art. 1183 Vol. 10 Sep. 2020 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621:669:67.017 2075-4701 10.3390/met10091183 27175683 RAZ_Burja_Jaka_2020.pdf RAZ_Burja_Jaka_2020.pdf 1 8D18E6650ED3264537946AC6FF9E1752 0c5afc20966ee938d2841285a41a2c16ea7e39a302af227be65dae281e5d845c 8714b499-6d6c-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=152659 https://www.mdpi.com/2075-4701/10/9/1183 1 5a1755f2-6d6c-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=152658 Naravoslovnotehniška fakulteta 0 0 0