20.500.12556/DKUM-53226 Primerjava lomne žilavosti TVP, izmerjene pri dveh vrstah majhnih preizkušancev Comparison of HAZ fracture toughness measured by two types of small scale specimens Na simulatorju Gleeble smo pripravili vzorce materiala z mikrostrukturo štirih različnih TVP ob črti taljenja. Iz njih smo izdelali preizkušance za merjenje udarne in lomne žilavosti. Lomno žilavost smo izmerili pri dveh vrstah majhnih preizkušancev z razpoko: pri okroglih nateznih in upogibnih SENB-preizkušancih. Pri prvih smo lahko določili ▫$K_{Ic}$▫, pri drugih pa ▫$theta_{c}$▫. Ko primerjamo vrednosti ▫$theta_{c}$▫ s ▫$K_{Ic}$▫, dobimo preoptimistične rezultate. Debelina SENB-preizkušancev je tudi pri zelo nizki lommni žilavosti še premajhna. Samples of material with microstructures of four different HAZ situated at the fusion line were prepared on a Gleeble simulator. Specimens for the experimental determination of impact and fracture toughness were machined from samples. The fracture toughness was measured on two types of small pre-cracked specimens. The ▫$K_{Ic}$▫ was determined on round tensile specimens while the ▫$theta_{c}$▫ was obtained from SENB specimens. The results obtained from the SENB specimens are too optimistic in comparison with the ▫$K_{Ic}$▫. The SENB specimens are not thick enough, even at very low fracture toughness. zvarni spoj konstrukcijsko jeklo toplotno vplivano področje (TVP) črta taljenja termični vpliv lomna žilavost weld joint constructional steel heat-affected zone (HAZ) fusion line thermal influence fracture toughness true false true Slovenski jezik Angleški jezik Znanstveno delo 2015-07-10 19:44:40 2015-07-10 19:44:40 2022-06-02 03:09:38 2021-05-10 03:35:49 2000 0 0 str. 371-374 št. 6 Letn. 34 2000 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1580-2949 621.791.052:539.55:669.14.018.298 106193664 210783 1580-2949 URN:SI:UM:DK:FG5ZGDLW Materiali_in_tehnologije_2000_Gliha_et_al._Comparison_of_HAZ_fracture_toughness_measured_by_two_types_of_small_scale_specimens.pdf Materiali_in_tehnologije_2000_Gliha_et_al._Comparison_of_HAZ_fracture_toughness_measured_by_two_types_of_small_scale_specimens.pdf 1 0E91EFAFF3C11B1EC4368390248A3473 9bd7ab7a409c987e5f8c5f09bae5e7facb73be8ec6ea2717126967cc1612bd36 fc84181a-7c0d-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=109803 http://mit.imt.si/Revija/izvodi/mit006/gliha.pdf 1 https://dk.um.si/Dokument.php?lang=slv&id=109802 Fakulteta za strojništvo 0 0 0