Počet záznamů: 1
The influence of isothermal ageing and subsequent hydrogen charging at room temperature on local mechanical properties and fracture characteristics of martensitic-bainitic weldments for power engineering
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SYSNO ASEP 0481131 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název The influence of isothermal ageing and subsequent hydrogen charging at room temperature on local mechanical properties and fracture characteristics of martensitic-bainitic weldments for power engineering Tvůrce(i) Falat, L. (SK)
Čiripová, L. (SK)
Homolová, V. (SK)
Kroupa, Aleš (UFM-A) RID, ORCIDCelkový počet autorů 4 Zdroj.dok. Journal of Mining and Metallurgy Section B-Metallurgy - ISSN 1450-5339
Roč. 53, č. 3 (2017), s. 373-382Poč.str. 10 s. Jazyk dok. eng - angličtina Země vyd. RS - Srbsko Klíč. slova power-plant steels ; dissimilar weld ; thermal exposure Vědní obor RIV BJ - Termodynamika Obor OECD Thermodynamics Institucionální podpora UFM-A - RVO:68081723 UT WOS 000417723500028 EID SCOPUS 85032570008 DOI 10.2298/JMMB170515033F Anotace The present study deals with the effects of high temperature expositions and subsequent cathodic hydrogen charging of dissimilar martensitic/bainitic weldment on its local mechanical properties and fracture behaviour at room temperature. Circumferential welded joint under investigation was produced by tungsten inert gas welding of X10CrWMoVNb9-2 martensitic and 7CrMoVTiB10-10 bainitic steels tubes with Ni-based filler metal and the application of subcritical postweld heat treatment. Hardness profile measurements revealed pronounced hardness peaks in over-heated regions of the individual steels heat-affected zones which remained preserved also during subsequent expositions at 600°C for up to 5000 hours. Gradual microstructural degradation of these regions included precipitate coarsening and the formation of new secondary phases during thermal exposure. The combined effects of thermal and hydrogen embrittlement of the studied weldment resulted in deleterious effects on its tensile and fracture behaviour.
Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2018
Počet záznamů: 1