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Title:TRDNOSTNA NEENAKOST ZVARNEGA SPOJA VISOKOTRDNOSTNEGA JEKLA
Authors:ID Salmič, Matej (Author)
ID Praunseis, Zdravko (Mentor) More about this mentor... New window
ID Avsec, Jurij (Comentor)
Files:.pdf VS_Salmic_Matej_2012.pdf (4,40 MB)
MD5: AE569C4154D6D3E5114C509C12E524B7
PID: 20.500.12556/dkum/a52dd384-c480-44f4-95e8-6f8512d9bede
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FE - Faculty of Energy Technology
Abstract:V zvarnih spojih visokotrdnostnih jekel za hidroopremo nastajajo heterogena področja, ki so posledica trdnostne neenakosti realnega zvarnega spoja, in sicer tako v zvaru kot v toplotno vplivanem področju. Trdnostna neenakost vpliva na orientiranje in razvoj nastalih razpok v zvarnih spojih, ki se jim pri gradnji ne moremo izogniti in ki lahko vodijo do porušitve konstrukcije. Zaradi zgoraj navedenega je določitev natančnega faktorja trdnostne neenakosti v zvarnem spoju ključnega pomena za varno obratovanje varjene konstrukcije. Predpostavljamo, da je zvarni spoj izrazito heterogena mikrostruktura z različnimi mehanskimi lastnostmi tako v zvaru kot v toplotno vplivanem področju. Omejitve bodo nastopile pri izvedbi eksperimentalnega dela naloge, saj bodo zaradi izrazito dragih metalografskih preiskav izvedene zgolj osnovne.
Keywords:visokotrdnostno jeklo, varjenje, varivost, trdnostna neenakost, zvarni spoj
Place of publishing:Krško
Publisher:[M. Salmič]
Year of publishing:2012
PID:20.500.12556/DKUM-38146 New window
UDC:621.791:539.219.2(043.2)
COBISS.SI-ID:1024103004 New window
NUK URN:URN:SI:UM:DK:2BFTOI61
Publication date in DKUM:29.10.2012
Views:2190
Downloads:176
Metadata:XML DC-XML DC-RDF
Categories:FE
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Secondary language

Language:English
Title:STRENGHT MISMATCHING OF HSLA WELDED JOINT
Abstract:The welds of high-strength steel in hydro-equipment contain heterogeneous areas caused by strength mismatch between the weld and the heat-affected zone in the actual weld. Strength mismatch influences the orientation and development of cracks in welds, which can't be avoided during construction and which can lead to the collapse of the whole construction. Due to the reasons mentioned above it is of key importance to define a precise strength mismatch factor for the weld in order to ensure a safe position of the welded construction element. We presume that the weld is an extremely heterogeneous microstructure with different mechanical characteristics for the weld and in the heat-affected zone. Due to very expensive metallographic tests we incurred some limitations during the experimental phase of the diploma and were forced to complete only the basic tests.
Keywords:high-strength steel, welding, weldability, strength mismatch, weld


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