FATIGUE STRENGTH DEGRADATION OF THERMOMECHANICALLY ROLLED HIGH STRENGTH STEELS WELDS
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25510%2F21%3A39917524" target="_blank" >RIV/00216275:25510/21:39917524 - isvavai.cz</a>
Výsledek na webu
<a href="https://www.confer.cz/metal/2021/4141-fatigue-strength-degradation-of-thermomechanically-rolled-high-strength-steels-welds" target="_blank" >https://www.confer.cz/metal/2021/4141-fatigue-strength-degradation-of-thermomechanically-rolled-high-strength-steels-welds</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.37904/metal.2021.4141" target="_blank" >10.37904/metal.2021.4141</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
FATIGUE STRENGTH DEGRADATION OF THERMOMECHANICALLY ROLLED HIGH STRENGTH STEELS WELDS
Popis výsledku v původním jazyce
The good weldability of thermomechanically rolled high-strength steels is vital for contemporary steel structures. Full utilization of their capacity requires detailed knowledge and quantification of all processes that are involved by the heat-deformation cycle during welding. As good cold-formability is one of their promoted capabilities, residual stress gradient after forming to particular profile has the non-negligible effect on the dynamic resistance of welded joints.In this study, the dynamically stressed structural unit made of ALFORM 700M steel was investigated, where the initiation of fatigue damage during experimental test in connection with the degrading effect of welding was determined. Invoked processes are evaluated using structural analyzes. The heterogeneity of mechanical parameters is expressed by the local yield strength measured by the indentation method. Fractographic analysis of the initiation process and individual stages of fracture development reflects the influence of both welding and the initial quality of the steel.An important role of the residual stress of the formed profile is found out, leading to a limited extent to the delamination of the material during welding and thus decisively affects the fatigue resistance.
Název v anglickém jazyce
FATIGUE STRENGTH DEGRADATION OF THERMOMECHANICALLY ROLLED HIGH STRENGTH STEELS WELDS
Popis výsledku anglicky
The good weldability of thermomechanically rolled high-strength steels is vital for contemporary steel structures. Full utilization of their capacity requires detailed knowledge and quantification of all processes that are involved by the heat-deformation cycle during welding. As good cold-formability is one of their promoted capabilities, residual stress gradient after forming to particular profile has the non-negligible effect on the dynamic resistance of welded joints.In this study, the dynamically stressed structural unit made of ALFORM 700M steel was investigated, where the initiation of fatigue damage during experimental test in connection with the degrading effect of welding was determined. Invoked processes are evaluated using structural analyzes. The heterogeneity of mechanical parameters is expressed by the local yield strength measured by the indentation method. Fractographic analysis of the initiation process and individual stages of fracture development reflects the influence of both welding and the initial quality of the steel.An important role of the residual stress of the formed profile is found out, leading to a limited extent to the delamination of the material during welding and thus decisively affects the fatigue resistance.
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
—
OECD FORD obor
20501 - Materials engineering
Návaznosti výsledku
Projekt
—
Návaznosti
S - Specificky vyzkum na vysokych skolach
Ostatní
Rok uplatnění
2021
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název statě ve sborníku
METAL 2021 : Conference Proceedings
ISBN
978-80-87294-99-4
ISSN
2694-9296
e-ISSN
—
Počet stran výsledku
5
Strana od-do
391-396
Název nakladatele
TANGER, spol. s r.o.
Místo vydání
Ostrava
Místo konání akce
Brno
Datum konání akce
26. 5. 2021
Typ akce podle státní příslušnosti
WRD - Celosvětová akce
Kód UT WoS článku
—