The possibilities of evaluating the yield strength in the heat affected zones of a weld through indentation
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25510%2F16%3A39901152" target="_blank" >RIV/00216275:25510/16:39901152 - isvavai.cz</a>
Výsledek na webu
<a href="http://dx.doi.org/10.4028/www.scientific.net/DDF.368.20" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/DDF.368.20</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4028/www.scientific.net/DDF.368.20" target="_blank" >10.4028/www.scientific.net/DDF.368.20</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
The possibilities of evaluating the yield strength in the heat affected zones of a weld through indentation
Popis výsledku v původním jazyce
The research focuses on elastic-plastic behaviour of welded joints of materials which are commonly used in both constructional practice and the automotive industry. The examined welded joints are oriented to a common constructional S355 and a modern high-strength steel DOMEX 700MC. The main tool for the assessment of the elastic-plastic response was the methodology based on the instrumented penetration testing with the use of a cylindrical indenter. The indentation tool was applied into narrow zones of welded boundaries. These zones represent critical areas of welded constructions because of a changing structure and different mechanical properties than the basic material possesses. The indentation data were recalculated to the mechanical properties in shear with the help of Hencky's hypotheses about material behaviour. The correctness of the used methodology was verified by a tensile test. The aim of the work is to determine optimal methods for defining a yield strength and to find a hardening trend in the zones. The comparison of these steels revealed different changes due to the welding process. A substantial decrease of the yield strength of Domex700MC was observed, as a contrary to a stable, or partially increased, yield strength of the S355 steel. Structural analyses revealed a different material response of the evaluated steels, according to a different hardness in the heat affected zone.
Název v anglickém jazyce
The possibilities of evaluating the yield strength in the heat affected zones of a weld through indentation
Popis výsledku anglicky
The research focuses on elastic-plastic behaviour of welded joints of materials which are commonly used in both constructional practice and the automotive industry. The examined welded joints are oriented to a common constructional S355 and a modern high-strength steel DOMEX 700MC. The main tool for the assessment of the elastic-plastic response was the methodology based on the instrumented penetration testing with the use of a cylindrical indenter. The indentation tool was applied into narrow zones of welded boundaries. These zones represent critical areas of welded constructions because of a changing structure and different mechanical properties than the basic material possesses. The indentation data were recalculated to the mechanical properties in shear with the help of Hencky's hypotheses about material behaviour. The correctness of the used methodology was verified by a tensile test. The aim of the work is to determine optimal methods for defining a yield strength and to find a hardening trend in the zones. The comparison of these steels revealed different changes due to the welding process. A substantial decrease of the yield strength of Domex700MC was observed, as a contrary to a stable, or partially increased, yield strength of the S355 steel. Structural analyses revealed a different material response of the evaluated steels, according to a different hardness in the heat affected zone.
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
JG - Hutnictví, kovové materiály
OECD FORD obor
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Návaznosti výsledku
Projekt
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Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2016
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
Defect and Diffusion Forum
ISBN
978-3-03835-720-9
ISSN
1012-0386
e-ISSN
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Počet stran výsledku
5
Strana od-do
20-24
Název nakladatele
Trans Tech Publications
Místo vydání
Zürich - Uetikon
Místo konání akce
Liberec
Datum konání akce
4. 11. 2015
Typ akce podle státní příslušnosti
EUR - Evropská akce
Kód UT WoS článku
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