Issue 46

I. Čamagić et alii, Frattura ed Integrità Strutturale, 46 (2018) 371-382; DOI: 10.3221/IGF-ESIS.46.34 371 The impact of the temperature and exploitation time on the tensile properties and plain strain fracture toughness, K Ic in characteristic areas of welded joint Ivica Čamagić Faculty of Technical Sciences, Kosovska Mitrovica, Serbia Ivica.camagic@pr.ac.rs Simon A. Sedmak Innovation Centre of Faculty of Mechanical Engineering, Belgrade, Serbia Simon.sedmak@yahoo.com Aleksandar Sedmak Faculty of Mechanical Engineering, University of Belgrade, Serbia asedmak@mas.bg.ac.rs Zijah Burzić Military Technical Institute, Belgrade, Serbia Zijah.burzic@gmail.com Mihajlo Aranđelović Innovation Centre of Faculty of Mechanical Engineering, Belgrade, Serbia Mixaylo23@gmail.com A BSTRACT . This paper presents the analysis of the temperature and exploitation time impact on the resistant measure to brittle fracture of welded joint constituents of the new and exploited low-alloyed Cr-Mo steel A-387 Gr. B from the aspect of application of the parameters obtained by tensile testing and parameters obtained by fracture mechanics testing. The exploited parent metal is a part of the reactor mantle which has working for over 40 years and is in the damage repair stage, wherein it is being replaced with a new material. Basic characteristics of the material strength, as well as the stress-elongation curves required for stress analysis are obtained by tensile testing. The testing of plane strain fracture toughness is conducted in order to determine the critical stress intensity factor, K Ic , that is, assessment of behavior of the new and exploited parent metal, welded metal and heat affected zone from the side of the new parent metal and from the side of the exploited parent metal in the Citation: Čamagić, I, Sedmak, S. A., Sedmak, A., Burzić, Z., Aranđelović, M., The impact of the temperature and exploitation time on the tensile properties and plain strain fracture toughness, KIc in characteristic areas of welded joint , Frattura ed Integrità Strutturale, 46 (2018) 371-382. Received: 05.08.2018 Accepted: 21.09.2018 Published: 01.10.2018 Copyright: © 2018 This is an open access article under the terms of the CC-BY 4.0, which permits unrestricted use, distribution,