20.500.12556/RUL-110156 Lasersko oplaščanje nizkoogljičnega jekla s TiC Laser cladding of low carbon steel with TiC Nizkoogljična jekla so jekla s slabšimi mehanskimi lastnostmi. Njihova trdota je zelo nizka, saj je glavna sestava mikrostrukture ferit. Da bi izboljšali njihove obrabne in korozivne lastnosti ter povečali trdoto, uporabljamo razne keramične prevleke. Z uporabo teh prevlek lahko naredimo trden in obrabno odporen strojni del, po relativno nizki ceni. Delo zajema teoretične osnove, kjer so opisani postopki laserskih površinskih obdelav. V eksperimentalnem delu je predstavljeno oplaščanje nizkoogljičnega jekla C10 s TiC z Nd:YAG laserjem. Opisani so postopki merjenja mikrotrdote in zaostalih napetosti. Naloga zajema tudi analizo mikrostrukture in njen vpliv na mikrotrdoto ter v kakšni meri moč laserja vpliva na globino obdelane površine in njeno trdoto. Ugotovljeno je bilo, da je nizkoogljično jeklo primerno za oplaščanje s TiC. Low carbon steels are steels with weak mechanical properties. Their hardness is low, as the main microstructure composition is ferrite. To improve their wear and corrosion properties and to increase hardness, we use various ceramic coatings. Using these coatings, however, we can make a solid and wear-resistant machine part at a relatively low cost. The work covers theoretical basics of laser surface treatment procedures. The experimental work presents coating of low carbon steel C10 with TiC done by Nd:YAG laser. Procedures for measuring microhardness and residual stresses are described. Work also covers the analysis of the microstructure and its effect on the microhardness, and the extent to which the power of the laser affects the depth of the treated surface and its hardness. We have discovered that low carbon steel is suitable for TiC coating. nizkoogljično jeklo TiC lasersko oblaganje mikrostruktura mikrotrdota zaostale napetosti low carbon steel TiC laser cladding microstructure microhardness residual stress true false false [M. Carević] Slovenski jezik Angleški jezik Zaključna naloga 2019-09-12 12:01:53 2019-09-12 12:01:56 2023-11-17 08:42:42 0000-00-00 00:00:00 2019 0 Ljubljana 0 XV, 24 f. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.9.048:669.14:620.17(043.2) 216767 16905499 4321.pdf 4321.pdf 1 0BA6946807AA80A8F505EE6BAB9681F9 b034d685942cd964b21cedeaf38948fbb1e97501081c9bc5a8264bb788e49cd9 0d3c4eef-a1b7-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=121794 Fakulteta za strojništvo 0 0 0