Počet záznamů: 1
Microstructure and the fatigue crack propagation in the dissimilar low alloy/stainless steel GMAW welded joints
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SYSNO ASEP 0561193 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Microstructure and the fatigue crack propagation in the dissimilar low alloy/stainless steel GMAW welded joints Tvůrce(i) Jambor, Michal (UFM-A) ORCID, RID
Pokorný, Pavel (UFM-A) ORCID
Trško, L. (SK)
Oplt, Tomáš (UFM-A) ORCID
Jacková, M. (SK)
Hutař, Pavel (UFM-A) RID, ORCIDCelkový počet autorů 6 Číslo článku 112119 Zdroj.dok. Materials Characterization. - : Elsevier - ISSN 1044-5803
Roč. 191, SEP (2022)Poč.str. 17 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova Dissimilar metal weld join ; GMAW ; Microstructure Vědní obor RIV JG - Hutnictví, kovové materiály Obor OECD Materials engineering CEP GA22-28283S GA ČR - Grantová agentura ČR Způsob publikování Omezený přístup Institucionální podpora UFM-A - RVO:68081723 UT WOS 000852984900001 EID SCOPUS 85134779580 DOI 10.1016/j.matchar.2022.112119 Anotace oining dissimilar metals is a frequent task for engineers in the power industry. The resulting dissimilar joints are then critical parts of the constructions and have to be able to withstand various loads during the operation of power devices. Due to the metals dissimilarity, the interface between ferritic side and the austenitic side of the joint is considered to be a critical area regarding the joint resistance to failure under static or cyclic loading. Proper understanding of the microstructures formed at the interface is key for production of solid and reliable dissimilar joints. In the present study, two dissimilar joints were prepared by gas metal arc welding (GMAW) using different low alloy steels. The microstructure of both joints is extensively studied using electron microscopy methods, with the emphasis taken on the interface between low alloy steel and austenitic weld metal. It was shown, that the interface between low alloy steel and weld metal is not a preferential crack path in case of non-environmental fatigue crack propagation, and the cracks are rather propagating through to the heat-affected zones of the low alloy steel side of the dissimilar joint. There were recorded significant differences in the threshold stress intensity factor between two tested welded joints (5.8 MPa × m1/2 vs. 8.7 MPa × m1/2. Therefore, the choice of the low alloy steel has a significant effect on the resistance to the fatigue crack propagation, and even small differences in the microstructure of low alloy steel may affect the resistance to the fatigue crack propagation at low stress ratios of the whole dissimilar joint. Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2023 Elektronická adresa https://www.sciencedirect.com/science/article/pii/S1044580322004016?via%3Dihub
Počet záznamů: 1