Assessment of ductile-to-brittle Ttansition behavior of localized microstructural regions in a friction-stir welded X80 pipeline steel with miniaturized charpy V-notch testing
Visualitza/Obre
Avila et al. - 2016 - Assessment of Ductile-to-Brittle Transition Behavior of Localized Microstructural Regions in a Friction-Stir Welde.pdf (5,418Mb) (Accés restringit)
Sol·licita una còpia a l'autor
Què és aquest botó?
Aquest botó permet demanar una còpia d'un document restringit a l'autor. Es mostra quan:
- Disposem del correu electrònic de l'autor
- El document té una mida inferior a 20 Mb
- Es tracta d'un document d'accés restringit per decisió de l'autor o d'un document d'accés restringit per política de l'editorial
Cita com:
hdl:2117/368126
Tipus de documentArticle
Data publicació2016-06
Condicions d'accésAccés restringit per política de l'editorial
Llevat que s'hi indiqui el contrari, els
continguts d'aquesta obra estan subjectes a la llicència de Creative Commons
:
Reconeixement-NoComercial-SenseObraDerivada 4.0 Internacional
Abstract
Friction-stir welding (FSW) is an alternative welding process for pipelines. This technology offers sound welds, good repeatability, and excellent mechanical properties. However, it is of paramount importance to determine the toughness of the welds at low temperatures in order to establish the limits of this technology. Ductile-to-brittle transition curves were generated in the present study by using a small-scale instrumented Charpy machine and miniaturized V-notch specimens (Kleinstprobe, KLST); notches were located in base metal, heat-affected, stirred, and hard zones within a FSW joint of API-5L X80 Pipeline Steel. Specimens were tested at temperatures between 77 K (-196 °C) and 298 K (25 °C). Based on the results obtained, the transition temperatures for the base material and heat-affected zone were below 173 K (-100 °C); conversely, for the stirred and hard zones, it was located around 213 K (-60 °C). Fracture surfaces were characterized and showed a ductile fracture mechanism at high impact energies and a mixture of ductile and brittle mechanisms at low impact energies.
CitacióAvila, J. [et al.]. Assessment of ductile-to-brittle Ttansition behavior of localized microstructural regions in a friction-stir welded X80 pipeline steel with miniaturized charpy V-notch testing. "Metallurgical and materials transactions A-Physical metallurgy and material", Juny 2016, vol. 47, núm. 6, p. 2855-2865.
ISSN1073-5623
Versió de l'editorhttps://link.springer.com/article/10.1007/s11661-016-3473-z
Fitxers | Descripció | Mida | Format | Visualitza |
---|---|---|---|---|
Avila et al. - ... a Friction-Stir Welde.pdf | 5,418Mb | Accés restringit |