20.500.12556/DKUM-97018 Experimental determination of a strain state in a bulk forming of a low carbon steel An experimental metallographic method for determining strain distribution in a cold formed workpiece is presented in this paper. The method, based on the dependence of recrystallized grain size on prior deformation, was applied to a bulk formed element made of low carbon steel. Strain distribution was obtained by the calibration curve which gives the relation between recrystallized grain size and prior deformation. To determine strain values, the average grain size was measured in the longitudinal cross-section of the formed element. To accurately differentiate deformation zones, additional observation of carbides and nonmetallic inclusions morphology was utilized, also. The grain size and strain noticeably differ through the cross-section. It is observed that in the middle part, material flows freely through the die opening without significant deformation. From this zone, strain increases gradually, reaching the highest value at the contact surface of the die slope, while the top part flows radially having intermediate values of strain. strain value bulk metal forming low carbon steel grain size metallography vrednost deformacije oblikovanje kovin v razsutem stanju nizkoogljično jeklo velikost zrn metalografija true false true Kaunas University of Technology (Lithuania) Angleški jezik Slovenski jezik https://matsc.ktu.lt/index.php/MatSc/article/view/34605 Članek v reviji 2026-02-11 15:19:15 2026-02-11 15:19:15 2026-02-12 03:14:21 0000-00-00 00:00:00 2024 0 0 str. 40-46 no. 1 Vol. 30 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2023-07-24 2023-09-22 2024-02-20 539.3:620.1/.2 267805187 10.5755/j02.ms.34605 2029-7289 https://matsc.ktu.lt/index.php/MatSc/article/view/34605 1 a6faed47-0754-11f1-b759-00155d00019a https://dk.um.si/Dokument.php?lang=slv&id=203235 testadmin,+40-46_34605.pdf testadmin,+40-46_34605.pdf 1 F239691512EDB822A8EBFD765F0985A5 27f0d8831671739c14d4f5c79820dc9eacceb9e3c26f3cd4282fa20daa8c923b 3c41ffc0-0755-11f1-b759-00155d00019a https://dk.um.si/Dokument.php?lang=slv&id=203236 Fakulteta za strojništvo 0 0 0