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Naslov:Determination of lower bound fracture toughness of a high strength low alloy steel welded joint
Avtorji:ID Gubeljak, Nenad (Avtor)
Datoteke:URL http://dx.doi.org/10.1179/174329305X39284
 
Jezik:Angleški jezik
Vrsta gradiva:Neznano
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FS - Fakulteta za strojništvo
Opis:The use of high-strength low-alloy steels for high performance structures (e.g. pressure vessels and pipelines) requires high strength consumables to produce an overmatched welded joint. This globally overmatched multipass welded joint contains two significantly different microstructures, as welded and reheated. In this paper, the influence of weld metal microstructure on fracture behaviour is estimated in comparison with the fracture behaviour of composite microstructures (as welded and reheated). The lower bound of fracture toughness for different microstructures was evaluated by using the modified Weibull distortion. The results, obtained using specimens with crack front through the thickness, indicated low fracture toughness, caused by strength mismatching interaction along thevcrck front. In the case of through thickness specimens, at least one local brittle microstructure is incorporatedin the process zone at the vicinity of the crck tip. Hence, unstable fracture occurred with small or without stable crack propagation. Despite the fact that the differences between the impact toughness of a weld metal and that of base metal are insignificant, the future toughness of a weld metal can be significantly lower.
Ključne besede:welded joints, fracture mechanics, Crack tip opening displacement, high strength seeel weld, mismatch effects, fracture toughness, resistance curves
Leto izida:2005
PID:20.500.12556/DKUM-27013 Novo okno
UDK:621.791.05:539.4
COBISS.SI-ID:9517590 Novo okno
ISSN pri članku:1362-1718
NUK URN:URN:SI:UM:DK:RYBBPAHI
Datum objave v DKUM:01.06.2012
Število ogledov:2489
Število prenosov:110
Metapodatki:XML DC-XML DC-RDF
Področja:Ostalo
:
GUBELJAK, Nenad, 2005, Determination of lower bound fracture toughness of a high strength low alloy steel welded joint. Science and technology of welding and joining [na spletu]. 2005. [Dostopano 2 april 2025]. Pridobljeno s: http://dx.doi.org/10.1179/174329305X39284
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Gradivo je del revije

Naslov:Science and technology of welding and joining
Skrajšan naslov:Sci. technol. weld. join.
Založnik:Institute of Materials
ISSN:1362-1718
COBISS.SI-ID:166337 Novo okno

Sekundarni jezik

Jezik:Angleški jezik
Ključne besede:zvarni spoji, lomna mehanika, CTOD, visokotrdnostna jekla, trdnostno neujemanje, lomna žilavost


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